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Ball screws / compact flange / diameter 28, 32 / pitch 6, 10, 32 / C7, C10 / steel / phosphated / 58-62HRC

Ball screws / compact flange / diameter 28, 32 / pitch 6, 10, 32 / C7, C10 / steel / phosphated / 58-62HRC
View the FAQ (10)

MISUMI

MISUMI

BSSR,BSSRK,BSSZ,BSSZK

Part Number

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Back to the Category Ball Screws

 

Technical Drawing - Ball Screws

Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related Image
Open the technical drawing in the new window

Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Ball Screws

 
Nut TypeTypeAccuracy GradeShaft Dia.LeadScrew ShaftNut
StandardF, P ConfigurableMaterialHardnessSurface TreatmentMaterialHardnessSurface Treatment
Standard NutBSSRBSSRKC1028, 326, 10, 32EN 1.1203 Equiv.Induction Hardened
56~62HRC		Phosphate Conversion CoatingEN 1.7264 Equiv.Carburized
58~62HRC		Low Temperature Black
Chrome
BSSZBSSZK


Further specifications can be found under the tab More information.

Composition of a Product Code - Ball Screws

Part Number-L-F-P
    BSSR2806
    BSSZK3232
Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related ImageBSSR3210L
Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related ImageBSSR3232G		-
-
-
-		270
270
370
370		    
-F40-P15
(L Type Greased)
(G Type Greased)
 

Alterations - Ball Screws

Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related Image

General Information - Ball Screws

Ball screw drive - ball screw drive, nut stop - ball screw drive, nut damper - ball screw drive, block shape - ball screw drive, nut mount

 

Ball Screw Selection Details

- Material: steel

- Coatings: uncoated, LTBC coating, phosphate conversion coating

- Heat treatment: up to 62HRC

- Precision category: C3, C5, C7, C10

- Precision classes: precision class, standard class

- Slope: 1 to 32 mm

- Outer diameter: 6 to 32 mm

- Length (mm): 100 to 2000

- Nut shape: round flange, square flange, compact flange, block shape

 

Description/Basics

Ball screws are intended for converting rotary motion to linear motion. This can also be done in reverse order from linear to rotary motion. With the ball screws, this is achieved extremely precisely due to their low play. In mechanical engineering, the ball thread drive is an indispensable feature and is indispensable in precision applications. These work in horizontal and vertical orientation, allowing to shift, raise and lower devices.
The ball screws are often driven by motors and shaft couplings, or manually via rotary/crank handles.
When utilising a keyway, it is recommended using a machine key, as these can be combined excellently due to the manufacturing tolerances.
For a smooth process, it is recommended installing the ball screw with a fixed bearing and a floating bearing. This ensures that the ball screw does not bend due to compression and generate vibrations. For this purpose, MISUMI offers the right support units drives in various designs. For more information on how to install ball screws, see the Installation Instructions available as a PDF.
Ball screw nuts are available in different shapes. These enable versatile utilisation, even in confined spaces. Due to their high precision, the ball screws can also provide a high level of repeatability that is necessary in precise positioning applications. These can be utilised, for example, for measuring devices or in 3D printing. It is recommended to use a pre-stressed ball screw for highly precise applications. Due to the pre-tensioning, the axial play is almost zero unlike a conventional ball screw. In addition, MISUMI offers single axis actuators (locating units) for such applications, which as drives are already equipped with precise ball screws.
In smaller applications, a slide screw or a so-called miniature screw drive can be used. Due to their design, these are very compact, but suitable for lower axial loads.
If very high forces occur, a lead screw could also be considered.
Which ball screw is the right one for your application must be calculated based on the existing factors and influences. You can use the selection Ball Screws that is available as a PDF for this purpose. You can also find the service life calculation in this link.

Overview of Screw Drives as PDF

 

Application Examples - Ball Screws

Positioning stage with ball screw drive - positioning stage with ball screw drive and profile rail guide

Application example for positioning stages
(1) Linear guide accessories, (2) Standard linear guide, (3) Table plate (meviy), (4) Ball screw, (5) Support units

Ball screw drive with bearing housing and damper - nut stop for ball screw drives - fixed bearings and floating bearings for ball screw drives

Application example for the ball screw
(1)) Support units, (2) Ball screw nut stops, (3) Ball screw, (4) Ball screw nut mountings


Lifting table and lifting device with ball screw drive - lifting table with rotary handle - lifting table with crank

Application example for a lifting device
(1) Ball screw, (2) Standard linear guide, (3) Support units, (4) Table top (meviy)

 

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry

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  1. 1
Part Number
BSSR2806-[250-2000/1]
BSSR2806G-[250-2000/1]
BSSR2806L-[250-2000/1]
BSSR3210-[300-2000/1]
BSSR3210G-[300-2000/1]
BSSR3210L-[300-2000/1]
BSSR3232-[300-2000/1]
BSSR3232G-[300-2000/1]
BSSR3232L-[300-2000/1]
BSSRK2806-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSRK2806G-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSRK2806L-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSRK3210-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSRK3210G-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSRK3210L-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSRK3232-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSRK3232G-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSRK3232L-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZ2806-[250-2000/1]
BSSZ2806G-[250-2000/1]
BSSZ2806L-[250-2000/1]
BSSZ3210-[300-2000/1]
BSSZ3210G-[300-2000/1]
BSSZ3210L-[300-2000/1]
BSSZ3232-[300-2000/1]
BSSZ3232G-[300-2000/1]
BSSZ3232L-[300-2000/1]
BSSZK2806-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSZK2806G-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSZK2806L-[250-2000/1]-F[27-45/1]-P[10-15/1]
BSSZK3210-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZK3210G-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZK3210L-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZK3232-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZK3232G-[300-2000/1]-F[33-60/1]-P[11-20/1]
BSSZK3232L-[300-2000/1]-F[33-60/1]-P[11-20/1]
Part NumberMinimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSScrew Shaft O.D.
(mm) 		Lead
(mm) 		Axial Play Number of Circuits
(Rows x Windings) 		Shaft Overall Length L
(mm) 		Basic Load Rating Dynamic Rating
(N) 		Basic Load Rating Static Rating
(N) 		Grease Type Shaft End Length F
(mm) 		Shaft Dia. P
(Ø) 		Screw Shaft Surface Treatment Shaft End Dimension (Fixed, Configurable) Shaft Dia. P
(φ)
1 7 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Standard2715Phosphate CoatingStationary-
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210072300Type G2715Phosphate CoatingStationary-
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210072300Type L2715Phosphate CoatingStationary-
1 7 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Standard3320Phosphate CoatingStationary-
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type G3320Phosphate CoatingStationary-
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type L3320Phosphate CoatingStationary-
1 7 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Standard3320Phosphate CoatingStationary-
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type G3320Phosphate CoatingStationary-
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type L3320Phosphate CoatingStationary-
1 7 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Standard27 ～ 45-Phosphate CoatingConfiguration10 ～ 15
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type G27 ～ 45-Phosphate CoatingConfiguration10 ～ 15
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type L27 ～ 45-Phosphate CoatingConfiguration10 ～ 15
1 7 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Standard33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type G33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type L33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 7 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Standard33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type G33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type L33 ～ 60-Phosphate CoatingConfiguration11 ～ 20
1 7 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Standard2715Not ProvidedStationary-
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type G2715Not ProvidedStationary-
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type L2715Not ProvidedStationary-
1 7 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Standard3320Not ProvidedStationary-
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type G3320Not ProvidedStationary-
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type L3320Not ProvidedStationary-
1 7 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Standard3320Not ProvidedStationary-
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type G3320Not ProvidedStationary-
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type L3320Not ProvidedStationary-
1 7 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Standard27 ～ 45-Not ProvidedConfiguration10 ～ 15
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type G27 ～ 45-Not ProvidedConfiguration10 ～ 15
1 9 Days 10286[0.10 or Less] 0.10 or Less2 x 2.5250 ～ 20001210042300Type L27 ～ 45-Not ProvidedConfiguration10 ～ 15
1 7 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Standard33 ～ 60-Not ProvidedConfiguration11 ～ 20
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type G33 ～ 60-Not ProvidedConfiguration11 ～ 20
1 9 Days 103210[0.2 or Less] 0.20 or Less2 x 2.5300 ～ 20003280086700Type L33 ～ 60-Not ProvidedConfiguration11 ～ 20
1 7 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Standard33 ～ 60-Not ProvidedConfiguration11 ～ 20
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type G33 ～ 60-Not ProvidedConfiguration11 ～ 20
1 9 Days 103232[0.2 or Less] 0.15 or Less2 x 1.5300 ～ 20001460038900Type L33 ～ 60-Not ProvidedConfiguration11 ～ 20

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  1. 1
Back to the Category Ball Screws

Technical Drawing - Ball Screws

Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related Image
Open the technical drawing in the new window

Specification Table - Ball Screws

Nut TypeAccuracy GradePart Number1mm IncrementYBall Dia.Ball Center Dia.Screw Root Dia.Number of CircuitsBasic Load RatingAxial PlayTwisting Direction
TypeScrew Shaft O.D.LeadL*F*PC (Dynamic) kNCo (Static) kN
Standard
Nut		C10BSSR
BSSZ		2806250~20002715L-1183.17528.8(25.6)2.5 turns, 2 rows12.142.30.10 or LessRight
BSSRK
BSSZK		27~4510~15L- (91+F)
BSSR
BSSZ		3210300~20003320L-1406.3533.8(27.2)32.886.70.20 or Less
BSSRK
BSSZK		33~6011~20L- (107+F)
BSSR323320L-1404.762533(27.8)1.5 turns, 2 rows14.638.90.15 or Less
BSSZ
BSSRK
BSSZK		33~6011~20L- (107+F)
* F and P are configurable for BSSRK and BSSZK only. F≤Px3 kgf=Nx0.101972

Alterations - Ball Screws

Rolled Ball Screws/Thread Diameter 28 or 32/Lead 6,10 or 32:Related Image
More Information
Caution: Do not let the nuts overrun or remove the nuts from the screw shafts.
It may cause the balls to fall out or damage the ball recirculation parts.
For accuracy of Rolled Ball Screws, see P.2223 and P.2224.
For Support Units, see P.753~P.778.
For Nut Brackets, see P.780.
 

Basic information

Type Rolled Nut Type Standard Nuts Flange Shape Round Shape 2 Sides Machined
Accuracy Grade C10 Preload Not Preloaded Conditions of Use Standard
Twisting Direction Right Nut structure 1-fach Circuit System Tube Type
Nut Size Standard

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Basic Attributes

  • Screw Shaft O.D.(mm)

    • 28
    • 32

    Clear

  • Lead(mm)

    • 6
    • 10
    • 32

    Clear

  • Axial Play

    • 0.2 or Less
      • 0.15 or Less
      • 0.20 or Less
    • 0.10 or Less
      • 0.10 or Less

    Clear

  • Number of Circuits(Rows x Windings)

    • 2 x 1.5
    • 2 x 2.5

    Clear

  • Shaft Overall Length L(mm)

     [250-2000/1mm Unit(s)]

    Clear

  • Grease Type

    • Standard
    • Type G
    • Type L

    Clear

  • Shaft End Length F(mm)

    • 27
    • 33

     [27-60/1mm Unit(s)]

    Clear

  • Shaft Dia. P(Ø)

    • 15
    • 20

    Clear

  • Screw Shaft Surface Treatment

    • Not Provided
    • Phosphate Coating

    Clear

  • Shaft End Dimension (Fixed, Configurable)

    • Configuration
    • Stationary

    Clear

  • Shaft Dia. P(φ)

     [10-20/1φ Unit(s)]

    Clear

  • Type

    • BSSR2806
    • BSSR2806G
    • BSSR2806L
    • BSSR3210
    • BSSR3210G
    • BSSR3210L
    • BSSR3232
    • BSSR3232G
    • BSSR3232L
    • BSSRK2806
    • BSSRK2806G
    • BSSRK2806L
    • BSSRK3210
    • BSSRK3210G
    • BSSRK3210L
    • BSSRK3232
    • BSSRK3232G
    • BSSRK3232L
    • BSSZ2806
    • BSSZ2806G
    • BSSZ2806L
    • BSSZ3210
    • BSSZ3210G
    • BSSZ3210L
    • BSSZ3232
    • BSSZ3232G
    • BSSZ3232L
    • BSSZK2806
    • BSSZK2806G
    • BSSZK2806L
    • BSSZK3210
    • BSSZK3210G
    • BSSZK3210L
    • BSSZK3232
    • BSSZK3232G
    • BSSZK3232L

    Clear

  • Filter by CAD data type

    • 2D
    • 3D

    Clear

Filter by standard shipping days

    • All
    • 7 Days or Less
    • 9 Days or Less

    Reset

Optional Attributes

Frequently Asked Questions (FAQ)

Question:

How do you mount a ball screw drive?
Answer:

A ball screw should be stored with a fixed bearing and a floating bearing. The fixed bearing should ideally be installed on the engine side or the drive side. Fixed bearing housings come already equipped with angular contact ball bearings to absorb axial forces. This combination makes ball screws an ideal candidate for positioning. However, a preloaded threaded drive should be selected for very high precision as it has very little axial play.

Question:

Why should a fixed and floating bearing be used?
Answer:

A fixed bearing housing is often used on the drive side. The floating bearing with housing, on the other hand, allows a small axial deviation and thus compensates for a change in length or a length tolerance. This prevents compression and bending of the ball screw and an imbalance through the length compensation. This may already occur by heating the spindle or application. Fixed and floating bearings are recommended in many rotary applications.
Question:

How does a ball screw work?
Answer:

A ball screw works similarly to a profile rail guide . In the nut of the ball screw, balls are in a closed ball circulation, which are guided to the spindle by the circular alignment. Thus, an unlimited stroke is theoretically possible, which, however, is limited by the length of the spindle. It is important to ensure that the nut of the ball screw is not removed from the spindle, because the balls can fall out as a result.
Question:

Why does the spindle oscillate in a ball screw drive?
Answer:

One possible cause for this could be that the ball screw is exposed to excessively high rotational speeds. The permissible rotational speed should not be higher than 80% of the critical speed. Here, attention should be paid not only to the visibly rotating components, but also to the rotational speed of the balls. Further information can be found in the ball screw driver selection as a PDF. Another possibility for the spindle to oscillate could be a compression of the spindle. Therefore, it is important to install a ball screw with a fixed bearing and a floating bearing so that these stresses can be compensated through a floating bearing. MISUMI offers this as ready-to-install bearing housings.
Question:

Is the ball screw nut removable?
Answer:

The ball screw nut or ball wrap nut should not be removed from the lead screw. There is a risk that the balls will fall out of the nut. This also means that the nut should not be extended over the threaded surface of the spindle. To remove the nut, you can work carefully with a transition shaft with the appropriate core diameter. However, MISUMI also offers an option [TAS] that provides a transition shaft with the ball screw drive. If a ball screw with reverse ball screw is required, the option [RLC] can be supplied with the ball screw nut installed in reverse.
Question:

Can you replace just the ball screw nut?
Answer:

A ball screw drive should always be replaced as one unit. If damage or wear has already occurred on the spindle, the accuracy of the ball screw drive can no longer be guaranteed. Therefore, it is always recommended replacing spindle and nut together. In addition, the ball screw nut should generally not be removed from the spindle. As a result, the balls that are necessary for the transmission of force may fall out.
Question:

How long does a ball screw lasts?

Answer:

How long a ball screw can withstand an application depends on many factors. Therefore, it is not possible to say generally how long a ball screw will last. When a ball screw should be replaced, it must be determined mathematically. In the following link, you will find the appropriate calculation formula for the lifetime available as a PDF.
Question:

How large is the axial play of a ball screw?
Answer:

The axial play varies depending on the precision class and size of the ball screw. You can find the appropriate axial play for different ball screws under the selection Ball Screws available as a PDF .
Question:

What must be considered when installing a ball screw?
Answer:

When installing a ball screw spindle, more must be taken into account than just ensuring that it is installed tension-free. There are a few things you should observe even before installation. You can view these as a PDF under Precautions.
Question:

Are the ball screws lubricated?
Answer:

The ball screws from MISUMI are pre-greased. Various lubricants are available for this purpose. Lithium-saponified lubricants are used as standard lubricants. In addition, MISUMI offers heat-resistant lubricants or lubricants suitable for cleanrooms. You can find further information under Installation and Maintenance available as a PDF.

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