We are using cookies to offer a more comfortable experience in our online shop

For example, we can show you personalized product recommendations and offer the best possible service functions in the ordering process. You can manage your cookie settings under privacy policy regulations at any time.

Linear Bushings(The circulation type of balls:Double)

Narrow search by specifying Type

  • Straight
  • Flange
  • Housing
  • Related Components
Data to be displayed
30
45
60
Sort by:
Brand
Product Series
CAD
Starting from
Min. Shipping Days
Specifications
Type
Style
Flange Type
Diameter of Inscribed Circle dr(φ)
Overall Length L(mm)
Material of Outer Cylinder
Outer Cylinder Surface Treatment
Motion
Lubrication Type
The circulation type of balls
Outer Diameter D(φ)
Accuracy
Eccentricity(μm)
Type
Length

    Flanged Linear Bushings/Double Type

      Flanged Linear Bushings/Center Flange

        Linear Bushings/Standard/Double

          Flanged Linear Bushings Double Bushings with Pilot

            Bushings with Pillow Blocks/Single Bushing/Wide Block

              Flanged Linear Bushings

                Linear Bushing LMK-L Type

                  Linear Bushing LMF-L Type

                    Linear Bushings/Compact/Short

                      Flanged Linear Bushings Medium/Center Flanged

                        Shaft-sliding Linear Bushings with Pillow Blocks/Single/Double

                          Linear Bushings with Pillow Blocks/Double Bushings

                            Linear Bushings with Pillow Blocks/Long/Wide Block

                              Flanged Linear Bushings/Double Type/Cost Efficient Product

                                Flanged Linear Bushings Pilot with Center Flange

                                  Linear Bushing LM-L Type

                                    Linear Bushing LMH-L Type

                                      Linear Bushings/Special Length

                                        Flanged Linear Bushings/Long Body with Pilot

                                          Flanged Linear Bushing/Double Bushing/With Lubrication Unit MX

                                            Linear Bushings/Double Type/Cost Efficient Product

                                              Flanged Linear Bushing with Lubrication Unit MX/Double Bushing with Pilot

                                                Bushing Pillow Block with Clamp Levers/Wide Block Single Type

                                                  Flanged Linear Bushing/Long Body with Long Pilot

                                                    Bushing Housing with Lubrication Unit/Tall Block Single Type

                                                      Flanged Linear Bushings - Compact Type

                                                        Bushing Housing with Lubrication Unit/Wide Block Single Type

                                                          Flanged Linear Bushing/Center Flanged/With Lubrication Unit MX

                                                            Linear Bushing Housing Unit, Long Type

                                                              Flanged Linear Bushings with Clamp Lever

                                                                Linear Bushing with Flange, Center Flange, Long Type, Two Face Flange [LMYMHMLUU]

                                                                  Linear Bushing with Flange, Standard Type, Long Type, Rectangular Flange

                                                                    Bushing With Lubrication Unit MX/Single Bushing

                                                                      Bushing with Clamp/Pillow Block Style Single Type

                                                                        Linear Bushings with Pillow Blocks/Long Block

                                                                          Linear Bushing with Flange, Pilot, Long Type, Two Face Flange

                                                                            Linear Bushing SBK-L Series (Double Rectangular Flange Type)

                                                                              Special Environment–Compatible Ball Bushing Unit, Long

                                                                                Slide Bushing SMF-W Type (Double Round Flange Type)

                                                                                  Linear Bushing Housing with Flange LFW Type, Double, Round Flange, Aluminum Case

                                                                                    Linear Bushing with Flange LFDTM Type (ECO Series), Double, T-Type Flange

                                                                                      Special Environment–Compatible Ball Bushing Unit, Standard

                                                                                        Linear Bushing LMF-ML Type (Stainless Type)

                                                                                          Linear Bushing, Standard Type, Long Type [LMYMLUU]

                                                                                            Linear Bushing LMI/LMI-L Type (Pilot Flange Type)

                                                                                            Brand

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            THK

                                                                                            THK

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            THK

                                                                                            THK

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MYT

                                                                                            MISUMI

                                                                                            MYT

                                                                                            MYT

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MISUMI

                                                                                            MYT

                                                                                            SBC

                                                                                            ASK LINEAR

                                                                                            NIPPON BEARING

                                                                                            OZAK

                                                                                            OZAK

                                                                                            ASK LINEAR

                                                                                            THK

                                                                                            MYT

                                                                                            THK

                                                                                            Product Series

                                                                                            Flanged Linear Bushings/Double Type

                                                                                            Flanged Linear Bushings/Center Flange

                                                                                            Linear Bushings/Standard/Double

                                                                                            Flanged Linear Bushings Double Bushings with Pilot

                                                                                            Bushings with Pillow Blocks/Single Bushing/Wide Block

                                                                                            Flanged Linear Bushings

                                                                                            Linear Bushing LMK-L Type

                                                                                            Linear Bushing LMF-L Type

                                                                                            Linear Bushings/Compact/Short

                                                                                            Flanged Linear Bushings Medium/Center Flanged

                                                                                            Shaft-sliding Linear Bushings with Pillow Blocks/Single/Double

                                                                                            Linear Bushings with Pillow Blocks/Double Bushings

                                                                                            Linear Bushings with Pillow Blocks/Long/Wide Block

                                                                                            Flanged Linear Bushings/Double Type/Cost Efficient Product

                                                                                            Flanged Linear Bushings Pilot with Center Flange

                                                                                            Linear Bushing LM-L Type

                                                                                            Linear Bushing LMH-L Type

                                                                                            Linear Bushings/Special Length

                                                                                            Flanged Linear Bushings/Long Body with Pilot

                                                                                            Flanged Linear Bushing/Double Bushing/With Lubrication Unit MX

                                                                                            Linear Bushings/Double Type/Cost Efficient Product

                                                                                            Flanged Linear Bushing with Lubrication Unit MX/Double Bushing with Pilot

                                                                                            Bushing Pillow Block with Clamp Levers/Wide Block Single Type

                                                                                            Flanged Linear Bushing/Long Body with Long Pilot

                                                                                            Bushing Housing with Lubrication Unit/Tall Block Single Type

                                                                                            Flanged Linear Bushings - Compact Type

                                                                                            Bushing Housing with Lubrication Unit/Wide Block Single Type

                                                                                            Flanged Linear Bushing/Center Flanged/With Lubrication Unit MX

                                                                                            Linear Bushing Housing Unit, Long Type

                                                                                            Flanged Linear Bushings with Clamp Lever

                                                                                            Linear Bushing with Flange, Center Flange, Long Type, Two Face Flange [LMYMHMLUU]

                                                                                            Linear Bushing with Flange, Standard Type, Long Type, Rectangular Flange

                                                                                            Bushing With Lubrication Unit MX/Single Bushing

                                                                                            Bushing with Clamp/Pillow Block Style Single Type

                                                                                            Linear Bushings with Pillow Blocks/Long Block

                                                                                            Linear Bushing with Flange, Pilot, Long Type, Two Face Flange

                                                                                            Linear Bushing SBK-L Series (Double Rectangular Flange Type)

                                                                                            Special Environment–Compatible Ball Bushing Unit, Long

                                                                                            Slide Bushing SMF-W Type (Double Round Flange Type)

                                                                                            Linear Bushing Housing with Flange LFW Type, Double, Round Flange, Aluminum Case

                                                                                            Linear Bushing with Flange LFDTM Type (ECO Series), Double, T-Type Flange

                                                                                            Special Environment–Compatible Ball Bushing Unit, Standard

                                                                                            Linear Bushing LMF-ML Type (Stainless Type)

                                                                                            Linear Bushing, Standard Type, Long Type [LMYMLUU]

                                                                                            Linear Bushing LMI/LMI-L Type (Pilot Flange Type)

                                                                                            CAD
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 3D
                                                                                            • 2D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            • 2D / 3D
                                                                                            Starting from

                                                                                            10.33 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            12.53 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            5.07 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            12.44 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.45 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            8.23 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            29.08 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            74.47 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            7.46 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            10.05 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            23.34 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            16.36 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            18.08 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            5.32 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            9.95 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            22.36 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            68.27 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            4.50 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            12.44 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            12.15 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            2.68 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            13.97 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            49.75 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.83 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            18.75 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.45 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            20.00 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.25 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            8.88 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            60.37 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            16.63 €

                                                                                            *Unit price with basic configuration

                                                                                            6.61 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            7.18 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            53.29 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.73 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            15.06 €

                                                                                            *Unit price with basic configuration

                                                                                            15.45 €

                                                                                            *Unit price with basic configuration

                                                                                            98.27 €

                                                                                            *Unit price with basic configuration

                                                                                            41.61 €

                                                                                            *Unit price with basic configuration

                                                                                            47.73 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            14.24 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            115.59 €

                                                                                            *Unit price with basic configuration

                                                                                            101.76 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            5.39 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            45.18 €

                                                                                            *Unit price with basic configuration

                                                                                            Volume Discount

                                                                                            Min. Shipping Days Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day Same day 4 Days Same day Same day Same day Same day 4 Days 6 Days 14 Days 4 Days 9 Days 4 Days 30 Days 5 Days Same day Same day
                                                                                            Specifications
                                                                                            • Stock
                                                                                            • Stock
                                                                                            • Stock
                                                                                            • Stock
                                                                                            • Stock
                                                                                            • Stock
                                                                                            • Stock
                                                                                                    • Stock
                                                                                                    • Stock
                                                                                                      • Stock
                                                                                                      • Stock
                                                                                                        • Stock
                                                                                                        • Stock
                                                                                                        • Stock
                                                                                                              • Stock
                                                                                                                • Stock
                                                                                                                • Stock
                                                                                                                • Stock
                                                                                                                • Stock
                                                                                                                • Stock
                                                                                                                  • Stock
                                                                                                                                        • Stock
                                                                                                                                          TypeFlangeFlangeStraightFlangeHousingFlangeFlangeFlangeStraightFlangeHousingHousingHousingFlangeFlangeStraightFlangeStraightFlangeFlangeStraightFlangeHousingFlangeHousingFlange / HousingHousingFlangeHousingFlangeFlangeFlangeStraightHousingHousingFlangeFlangeFlangeFlangeFlangeFlangeFlange-Straight-
                                                                                                                                          StyleStandardStandardStandardStandardStandardStandard--StandardStandardStandardStandardStandardStandardStandard--StandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandard-StandardStandard
                                                                                                                                          Flange TypeStandard FlangeStandard Flange / Center Flanged-Pilot Flange-Standard FlangeStandard Flange--Center Flanged---Standard FlangePilot Flange-Standard Flange-Pilot FlangeStandard Flange-Pilot Flange-Pilot Flange-Standard Flange-Pilot Flange-Standard FlangeCenter FlangedStandard Flange---Pilot FlangeStandard FlangePilot FlangeStandard FlangeStandard FlangeStandard FlangePilot FlangeStandard Flange-Pilot Flange
                                                                                                                                          Diameter of Inscribed Circle dr(φ)3 ~ 506 ~ 503 ~ 506 ~ 506 ~ 306 ~ 306 ~ 606 ~ 606 ~ 166 ~ 3012 ~ 304 ~ 305 ~ 506 ~ 506 ~ 303 ~ 506 ~ 306 ~ 306 ~ 4010 ~ 504 ~ 5010 ~ 5016 ~ 306 ~ 4010 ~ 306 ~ 1610 ~ 5010 ~ 508 ~ 5016 ~ 3012 ~ 306 ~ 5010 ~ 5016 ~ 306 ~ 3016 ~ 256 ~ 4016 ~ 30206 ~ 606 ~ 40306 ~ 304 ~ 606 ~ 20
                                                                                                                                          Overall Length L(mm)19 ~ 19235 ~ 19219 ~ 19235 ~ 19235 ~ 10029 ~ 9035 ~ 21135 ~ 21135 ~ 7029 ~ 9070 ~ 13827 ~ 13833 ~ 21535 ~ 19229 ~ 9019 ~ 19235 ~ 12329 ~ 9049 ~ 23064.5 ~ 22023 ~ 19264.5 ~ 220100 ~ 15849 ~ 23074 ~ 15635 ~ 7078 ~ 24364.5 ~ 22058 ~ 21570 ~ 12357 ~ 12335 ~ 19264.5 ~ 22099 ~ 15537 ~ 20270 ~ 11235 ~ 151100 ~ 1808046 ~ 24435 ~ 153122 ~ 16435 ~ 12323 ~ 20935 ~ 80
                                                                                                                                          Material of Outer CylinderIron / Stainless SteelIron / Stainless SteelIron / Stainless SteelIron / Stainless SteelIronIronIronIronIronIronIronIron / Stainless SteelIron / Stainless SteelIronIronIron / Stainless SteelIronIronIron / Stainless SteelIronIronIronIronIron / Stainless SteelIronIronIronIronAluminumIronIronIronIronIronIronIronIronIronIronAluminumIronIron / Stainless SteelStainless SteelIronIron
                                                                                                                                          Outer Cylinder Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentSurface TreatmentNo Surface Treatment / Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentSurface TreatmentSurface TreatmentSurface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface TreatmentNo Surface TreatmentSurface TreatmentNo Surface Treatment / Surface TreatmentSurface TreatmentNo Surface Treatment / Surface TreatmentSurface TreatmentNo Surface TreatmentSurface TreatmentNo Surface Treatment / Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface TreatmentSurface TreatmentNo Surface TreatmentNo Surface TreatmentSurface TreatmentNo Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface Treatment / Surface TreatmentNo Surface TreatmentNo Surface TreatmentNo Surface Treatment
                                                                                                                                          MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear Motion-Linear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear MotionLinear Motion
                                                                                                                                          Lubrication TypeN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AWith Lubrication Unit MXN/AWith Lubrication Unit MXN/AN/AWith Lubrication Unit MXN/AWith Lubrication Unit MXWith Lubrication Unit MXN/AN/AN/AN/AWith Lubrication Unit MXN/AN/AN/AN/AGrease coatingN/AN/AN/AGrease coatingN/AN/AN/A
                                                                                                                                          The circulation type of ballsDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDoubleDouble
                                                                                                                                          Outer Diameter D(φ)7 ~ 8012 ~ 807 ~ 8012 ~ 80-12 ~ 4512 ~ 9012 ~ 9010 ~ 2612 ~ 45-8 ~ 45-12 ~ 8012 ~ 457 ~ 8012 ~ 4512 ~ 4515 ~ 6519 ~ 808 ~ 8019 ~ 80-15 ~ 6519 ~ 4510 ~ 26-19 ~ 8017 ~ 6128 ~ 4521 ~ 4512 ~ 8019 ~ 80-12 ~ 4528 ~ 4012 ~ 6032 ~ 523220 ~ 12012 ~ 605212 ~ 458 ~ 9012 ~ 32
                                                                                                                                          AccuracyHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh Grade-High GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeHigh GradeStandard GradeHigh GradeStandard GradeStandard GradeHigh GradeHigh GradeHigh GradeStandard Grade-Standard GradeHigh GradeHigh GradeHigh GradeStandard GradeHigh GradeStandard Grade-
                                                                                                                                          Eccentricity(μm)10 ~ 2515 ~ 2510 ~ 2515 ~ 25-15 ~ 2015 ~ 2515 ~ 251515 ~ 20---30 ~ 5015 ~ 2010 ~ 2515 ~ 2015 ~ 2020 ~ 3015 ~ 25-15 ~ 25-20 ~ 30-15-15 ~ 2512 ~ 2015 ~ 2015 ~ 2015 ~ 2515 ~ 25--15 ~ 2015 ~ 25-20---15 ~ 2010 ~ 3015 ~ 20
                                                                                                                                          TypeFlanged End Face-Standard-Housing Units Wide Block TypeFlanged End FaceFlanged End FaceFlanged End FaceStandard-Shaft sliding type housing unit typeHousing TypeHousing Units Wide Block TypeFlanged End Face-StandardFlanged End FaceStandardFlanged End FaceFlanged End FaceStandard-Housing Units Wide Block Type-Housing TypeFlanged End FaceHousing Units Wide Block Type-Housing TypeFlanged End FaceFlanged End FaceFlanged End FaceStandard-Housing TypeFlanged InlayFlanged End FaceFlanged InlayFlanged End FaceFlanged End FaceFlanged End FaceFlanged InlayFlanged End FaceStandardFlanged Inlay
                                                                                                                                          Length----Medium-LongLong--DoubleDoubleDouble / Medium Long / LongDouble-LongLong---Double-Double-DoubleDoubleDouble-LongDoubleLongLong--Medium / Medium Long / LongLongStandardLongDoubleDoubleDoubleStandardLongLongLong

                                                                                                                                          Loading...

                                                                                                                                          MISUMI Unit Example related to this category

                                                                                                                                          Categories related to Linear Bushings