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Timing belt pulleys with keyless bushings / sleeve ST, SH / S8M / flanged pulley deselectable / aluminium, steel (Part Numbers - CAD Download)

Timing belt pulleys with keyless bushings / sleeve ST, SH / S8M / flanged pulley deselectable / aluminium, steel
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MISUMI

MISUMI

  • Order quantities extended (D-JIT)

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  • Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.

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Unit еxample related to this product
Lifting and Carrying Mechanism Using Eccentric Shaft
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Back to the Category Toothed Pulleys/Timing Pulleys/Idler Pulleys

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Keyless High Torque Timing Pulley/S8M Type/ST/SH Keyless Bushing: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) - Toothed Pulleys/Timing Pulleys/Idler Pulleys

 
TypePart NumberMaterial *1Surface Treatment
Belt Width:
15mm
A:17W:22		Belt Width 25mm
A:28W:33		Belt Width: 30mm
A:33W:38		Belt Width: 40mm
A:44W:49		PulleyFlangeBushingPulleyFlangeBushing
S8M150S8M250S8M300S8M400
HTLA●●●●EN AW-7075 Equiv.Aluminum Alloy 5000 seriesEN 1.1191 Equiv.Clear Anodize-
HTLK●●●●Hard Clear Anodize *2-
HTPL●●●●EN 1.1191 Equiv.EN 1.0330 Equiv.EN 1.1191 Equiv.Black Oxide
HTLG●●●●Electroless Nickel Plating
*1. The above material and accessory might be changed to the ones equivalent to the originals. *2. Hard Anodize Treatment: Film Hardness 300HV ~

Further specifications can be found under the tab More Information.

Composition of a Product Code - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Part Number-Pulley Shape-Shaft Bore Dia.
HTPL 60S8M300-E-40

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys


Keyless High Torque Timing Pulley/S8M Type/ST/SH Keyless Bushing:Related Image

Here to the Overview of Options as PDF.

General Information - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Toothed pulley - synchronous pulley - belt pulley - product assortment

 

Selection details of toothed pulleys/timing pulleys/idler pulleys

- Material: aluminum, steel, stainless steel (stainless steel), plastic

- Coatings: uncoated, burnished, anodized, nickel-plated

- Profile form: 1.5GT, 2GT, 3GT, 5GT, P2M, P3M, P5M, P8M, S2M, S3M, S5M, S8M, S14M, T2.5, T5, T10, AT5, AT10, 5M, 8M, 14M, 8YU, H, L, MXL, XL, PowerGrip GT3: MR2, MR3, MR5

- ISO tolerances: H7

- Belt width (mm): 4, 4.8, 6, 6.4, 7, 7.9, 9, 9.5, 10, 12, 12.7, 15, 18, 19.1, 20, 25, 25.4, 26, 28, 30, 31, 38,1, 40, 50, 50.8, 53, 60, 74, 76.2, 100

- Belt width (inches): 0.19, 0.25, 0.31, 0.37, 0.5, 0.75, 1, 1.5, 2

- Number of teeth: 10 to 72

 

Description/Basics

The toothed pulley for mechanical engineering is intended for the transmission of force and torque. Timing pulleys enable a gear ratio of speeds through belt pulleys of different sizes. Timing pulleys are more efficient, durable and significantly more maintenance-friendly compared to chain transmissions.

How much torque and load a timing pulley can transmit depends on the width of the belt. The width of the belt must be calculated. It is recommended to ensure the belt is correctly tensioned. MISUMI already offers the suitable idler pulley and return rollers with integrated ball bearings. For design and design help follow this link.

Different profile shapes of the toothed belts and belt pulleys are responsible for the transmission of power. Depending on the positioning accuracy, the applied torque and the conveying weight, MISUMI offers the fitting pulley. Toothed belt drives are generally used in the industry in three areas:
Positioning: Timing pulleys is often used in 3D printers. A toothed pulley with a semi-circular profile (e.g., GT) is often used for the required position accuracy of a 3D printers. The round shape offers the benefit of little play when the direction changes.
Drive: toothed pulleys are also used for high torque. In most cases, a timing pulley with a rounded trapezoidal profile (e.g., S8M) is used. These are particularly well suited for the transmission of high forces, which occur in drives of various applications in order to drive mechanical components.
Conveying: toothed pulleys can also be used for transporting loads. A straight trapezoidal profile is often used for this purpose (e.g., AT). This toothed pulley shape offers a large surface for loading and transmitting of loads.

Which toothed pulley or timing pulley is the right one for your application depends on the respective task of the toothed belt drive. Different toothed disc profiles have proven themselves for each type of application.

Various bore hole shapes and fastening variants are available for shaft mounting. These allow fastening via set screws, keyways and by means of Mecha locks. Fastening via a clamping sleeve has the further advantage that it allows adjusting the alignment continuously. The MISUMI product assortment has these ready-to-install.

Application Examples - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Application example: idler pulley - idler pully toothed with chain tensioner - toothed pulley with chain tensioner

Application example: idler pulley
(1) Idler pulleys, (2) chain tensioner

Application example: return roller - return roller with cantilever pin - synchronous pulley with on-board disc - toothed pulley with on-board disc

Application example: deflection roller
S (1) Toothed pulleys with crimp disc, (2) nut, (3) washer, (4) cantilever shaft, (5) retaining ring

Application example: synchronous pulleys - toothed pulleys with toothed belts - toothed pulley with screw-on clamp

Application example: timing pulleys
(1) Flat head screw, (2) Timing pulley, (3) Timing belt, (4) Screw-on terminal

Application example: toothed belt drives - toothed pulleys with crimp disc - idler pulley with crimp disc - tensioning of the toothed belt

Application example: of toothed belt drives
(1) Toothed belt, (2) driven toothed pulley with crimp disc, (3) idler pulley with crimp disc, (4) driving toothed pulley with crimp disc

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry

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Part Number
HTPL25S8M250-F-[12,​14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL25S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL25S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL25S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL25S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL26S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL28S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25]
HTPL30S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL30S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL32S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32]
HTPL34S8M150-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M250-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M250-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M300-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M300-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL34S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL36S8M150-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38]
HTPL36S8M250-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38]
HTPL36S8M250-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL36S8M300-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38]
HTPL36S8M300-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL36S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38]
HTPL36S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38]
HTPL38S8M150-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL38S8M250-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL38S8M250-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL38S8M300-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL38S8M300-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35]
HTPL38S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL38S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL40S8M150-E-[20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL40S8M250-E-[20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL40S8M250-F-[20,​22,​24,​25,​28,​30,​32,​35]
HTPL40S8M300-E-[20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
HTPL40S8M300-F-[20,​22,​24,​25,​28,​30,​32,​35]
HTPL40S8M400-E-[20,​22,​24,​25,​28,​30,​32,​35,​38,​40,​42]
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSBelt Width
(mm) 		[T] Number of Teeth Pulley Shape Material Surface Treatment Shaft Bore Dia. [d]
(mm)

-

1 14 Days 102525Shape FEN 1.1191 Equiv.Black Oxide12 ～ 25

-

1 14 Days 103025Shape EEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 103025Shape FEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 104025Shape EEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 104025Shape FEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 101526Shape EEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 102526Shape EEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 102526Shape FEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 103026Shape EEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 103026Shape FEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 104026Shape EEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 104026Shape FEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 101528Shape EEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 102528Shape EEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 102528Shape FEN 1.1191 Equiv.Black Oxide14 ～ 25

-

1 14 Days 103028Shape EEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 103028Shape FEN 1.1191 Equiv.Black Oxide15 ～ 25

-

1 14 Days 104028Shape EEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 104028Shape FEN 1.1191 Equiv.Black Oxide16 ～ 25

-

1 14 Days 101530Shape EEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 102530Shape EEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 102530Shape FEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 103030Shape EEN 1.1191 Equiv.Black Oxide15 ～ 32

-

1 14 Days 103030Shape FEN 1.1191 Equiv.Black Oxide15 ～ 32

-

1 14 Days 104030Shape EEN 1.1191 Equiv.Black Oxide16 ～ 32

-

1 14 Days 104030Shape FEN 1.1191 Equiv.Black Oxide16 ～ 32

-

1 14 Days 101532Shape EEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 102532Shape EEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 102532Shape FEN 1.1191 Equiv.Black Oxide14 ～ 32

-

1 14 Days 103032Shape EEN 1.1191 Equiv.Black Oxide15 ～ 32

-

1 14 Days 103032Shape FEN 1.1191 Equiv.Black Oxide15 ～ 32

-

1 14 Days 104032Shape EEN 1.1191 Equiv.Black Oxide16 ～ 32

-

1 14 Days 104032Shape FEN 1.1191 Equiv.Black Oxide16 ～ 32

-

1 14 Days 101534Shape EEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 102534Shape EEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 102534Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 103034Shape EEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 103034Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 104034Shape EEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 104034Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 101536Shape EEN 1.1191 Equiv.Black Oxide16 ～ 38

-

1 14 Days 102536Shape EEN 1.1191 Equiv.Black Oxide16 ～ 38

-

1 14 Days 102536Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 103036Shape EEN 1.1191 Equiv.Black Oxide16 ～ 38

-

1 14 Days 103036Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 104036Shape EEN 1.1191 Equiv.Black Oxide16 ～ 38

-

1 14 Days 104036Shape FEN 1.1191 Equiv.Black Oxide16 ～ 38

-

1 14 Days 101538Shape EEN 1.1191 Equiv.Black Oxide16 ～ 42

-

1 14 Days 102538Shape EEN 1.1191 Equiv.Black Oxide16 ～ 42

-

1 14 Days 102538Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 103038Shape EEN 1.1191 Equiv.Black Oxide16 ～ 42

-

1 14 Days 103038Shape FEN 1.1191 Equiv.Black Oxide16 ～ 35

-

1 14 Days 104038Shape EEN 1.1191 Equiv.Black Oxide16 ～ 42

-

1 14 Days 104038Shape FEN 1.1191 Equiv.Black Oxide16 ～ 42

-

1 14 Days 101540Shape EEN 1.1191 Equiv.Black Oxide20 ～ 42

-

1 14 Days 102540Shape EEN 1.1191 Equiv.Black Oxide20 ～ 42

-

1 14 Days 102540Shape FEN 1.1191 Equiv.Black Oxide20 ～ 35

-

1 14 Days 103040Shape EEN 1.1191 Equiv.Black Oxide20 ～ 42

-

1 14 Days 103040Shape FEN 1.1191 Equiv.Black Oxide20 ～ 35

-

1 14 Days 104040Shape EEN 1.1191 Equiv.Black Oxide20 ～ 42

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Back to the Category Toothed Pulleys/Timing Pulleys/Idler Pulleys

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Keyless High Torque Timing Pulley/S8M Type/ST/SH Keyless Bushing:Related Image
Open the technical drawing in the new window

Specification Tables - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Part NumberPulley ShapedH7 Range (, ): Select the former or latter, (~): Specify in 1mm Increment
Shape EShape F
TypeNumber of TeethType, Nominal Width
Nominal Width		S8M150S8M250S8M300S8M400S8M150S8M250S8M300S8M400
ST BushingST BushingST BushingST BushingSH
Bushing		ST Bushing: 12~30, SH Bushing: 32, 35ST Bushing: 15~32, SH Bushing: 35ST Bushing
HTLA
HTLK
HTPL
HTLG		18S8M150
*A:17
*W:22

S8M250
*A:28
*W:33

S8M300
*A:33
*W:38

S8M400
*A:44
*W:49		E

F		1212---12--
1912, 14, 1512, 14, 1515-1212, 14, 1515-
2012, 14~1712, 14~1715~17-1212, 14, 1515-
2112, 14~1712, 14~1715~1716, 171212, 14~1715~1716, 17
22
24
2512, 14~20, 22, 24, 2515~20, 22, 24, 2516~20, 22, 24, 251212, 14~20, 22, 24, 2515~20, 22, 24, 2516~20, 22, 24, 25
2614~20, 22,
24, 25		14~20, 22,
24, 25		15~20, 22,
24, 25		16~20, 22,
24, 25		-14~20,
22, 24, 25		15~20, 22, 24,
25		16~20, 22, 24, 25
28
3014~20, 22, 24,
25, 28, 30, 32		14~20, 22, 24,
25, 28, 30, 32		15~20, 22, 24,
25, 28, 30, 32		16~20, 22, 24,
25, 28, 30, 32		-14~20, 22, 24,
25, 28, 30, 32		15~20, 22, 24,
25, 28, 30, 32		16~20, 22, 24, 25, 28, 30, 32
32
3416~20, 22, 24, 25, 28, 30, 32, 35-16~20, 22, 24, 25, 28, 30, 32, 3516~20, 22, 24, 25, 28, 30, 32, 3516~20, 22, 24, 25, 28, 30, 32, 35
3616~20, 22, 24, 25, 28, 30, 32, 35, 3816~20, 22, 24, 25, 28, 30, 32, 35, 38
3816~20, 22, 24, 25, 28, 30, 32, 35, 38, 40, 4216~20, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42
4020, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42-20, 22, 24, 25, 28, 30, 32, 3520, 22, 24, 25, 28, 30, 32, 3520, 22, 24, 25, 28, 30,
32, 35, 38, 40, 42
44
48
5020, 22, 24, 25, 28, 30, 32, 35, 38,
40, 42, 45, 48, 50		-20, 22, 24, 25, 28, 30, 32, 3520, 22, 24, 25, 28, 30, 32, 3520, 22, 24, 25, 28, 30,
32, 35, 38, 40, 42
60
7220, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42, 45, 48, 50-20, 22, 24, 25, 28, 30, 32, 3520, 22, 24, 25, 28, 30, 32, 35, 38, 40, 42, 45, 48, 50

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys


Keyless High Torque Timing Pulley/S8M Type/ST/SH Keyless Bushing:Related Image

Here to the Option Overview PDF
 

Basic information

Type Keyless Pulleys Belt Type S8M Timing Pulleys/Idlers Pulleys

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Basic Attributes

  • Belt Width(mm)

    • 15
    • 25
    • 30
    • 40

    Clear

  • [T] Number of Teeth

    • 18
    • 19
    • 20
    • 21
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 32
    • 34
    • 36
    • 38
    • 40
    • 44
    • 48
    • 50
    • 60
    • 72

    Clear

  • Pulley Shape

    • Shape E
    • Shape F

    Clear

  • Surface Treatment

    • Black Oxide
    • Clear Anodize
    • Hard Clear Anodize
    • Electroless Nickel Plating

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Frequently Asked Questions (FAQ)

Question:

Do you have any belt pulleys without a hole?
Answer:

The MISUMI toothed pulleys always have a pilot bore. It is expanded depending on your configuration. It provides the advantage that the belt pulleys are already provided with a suitable shaft bore ready for installation. Therefore, it does not require time-consuming post-processing.
Question:

Do you have timing pulleys made of aluminum?
Answer:

The MISUMI online shop also offers timing pulleys or toothed pulleys in aluminum. Furthermore, we are also offering belt pulleys in steel and stainless steel. The return rollers and idler pulleys for the timing belts are also available in plastic.
Question:

Is a transmission with toothed belt pulleys possible?
Answer:

With toothed pulleys, a gear ratio is possible in a drive. The gear ratio is established based on the number of teeth on the belt pulleys. It should be ensured that the minimum number of teeth of the timing pulley disc is not undercut.

Question:

Which type of the toothed belt pulley can be clamped during assembly?
Answer:

There are a number of ways to install timing pulleys on a shaft. For applications that are not exposed to high torque, such as conveyors, it can be sufficient to fasten a timing pulley using clamping threaded pins. For this purpose, the shaft should have a flat surface.
For higher loads, a toothed pulley with a keyway can also be used.
A further variant is the fastening of a timing pulley via a conical chip sleeve. Depending on the type of Mecha lock, the timing pulley requires lateral internal threads, which can be added through additional options in the MISUMI online shop.
A timing pulley with a bore hole can also be combined with a Mech lock. MISUMI is offering this combination as a set.

Question:

Where do you position the tension roller?
Answer:

If an idler pulley should be utilised, it should be positioned on the sag side. This means that the idler pulley is attached to the side not subjected to pull.
Ideally, a toothed idler pulley is mounted on the inside of the toothed belt. The tensioning roller should always be larger than the smallest toothed idler pulley of the belt drive system.
If an idler pulley must tension the toothed belt from the outside, then a non-toothed (flat) idler pulley should be used. Cantilever pins, which MISUMI offers in various geometric versions, are suitable for fastening.

Question:

Which parallel key can be used for the toothed pulleys?
Answer:

The parallel key size is based on the shaft diameter. In this case, it is recommended using the MISUMI parallel keys, as they fit better when MISUMI toothed pulleys are used. See Overview available as PDF for keyway tolerances.
Question:

Is a timing pulley with a round profile better?
Answer:

Timing pulleys and round-profile timing belts are not recommended for every application. For example, the round profile shape is well suited for applications that require high positioning accuracy. Therefore, they are often used in 3D printers and scanners. Compared to other profile shapes, the round profile shape has a higher wear resistance. Another advantage of the round profile shape is the minimized play in the return (reverse play).
Question:

Which belt pulley is suitable for Gates toothed belts?
Answer:

The GT and EV timing pulleys are suitable for Gates’ toothed belts. However, these require you put attention to the slope (distance of the teeth) of the toothed belt. It must be checked whether these correspond to the selected toothed pulley.
Question:

Are the curtain discs necessary for the toothed pulleys?
Answer:

It is recommended using the smaller belt pulleys particularly with curb disc. The curb disk ensures that the toothed belt does not migrate down from the toothed belt pulley. Even with the smallest misalignment of a pulley, there may be a risk that the toothed belt will move and jump during operation.
Question:

How is the gearing of the toothed pulleys manufactured?
Answer:

The gear teeth of the MISUMI toothed belt pulley are mainly pushed. This ensures high manufacturing accuracy. As a result, the teeth fit precisely into the toothed belt profile of the timing belts and ensure optimal power and torque transmission.

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