Tensioner Idlers / toothed / profile selectable / flanged pulley deselectable / single bearing, double bearing / material selectable / treatment selectable (Part Numbers - CAD Download)

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Technical Information

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

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Flanged Idlers with Teeth - Center Bearing: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

Type		Material					Surface Treatment
Center Bearing	Both Sides Bearing	Main Body			Flange	Bearing
		S5M	S8M	S14M
AHTF	AHTFW	Aluminum Alloy 2000 series	EN AW-7075 Equiv.	-	EN AW-5052 Equiv.	Steel	Clear Anodize
KHTF	KHTFW						Hard Clear Anodize *¹
BHTF	BHTFW	EN 1.1191 Equiv.			EN 1.1191 Equiv.		Black Oxide
	BHTFWNF*²
MHTF	MHTFW				EN 1.1191 Equiv.		Electroless Nickel Plating
SHTF	-	EN 1.4301 Equiv.	-	-	EN 1.4301 Equiv.	Stainless Steel	-

*1 Hard Clear Anodize: Film Hardness 300HV ~
*2 Compatible with S14M Type only. On 2014 and later, S14M Type is to be delivered with flange not swaged on, but included.

Further specifications can be found under the tab More Information.

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

• Center Bearing

Part Number

Type	Number of Teeth	Applicable Belt
AHTF	30	S5M100

• Both Sides Bearing

Part Number				-	d

Type	Number of Teeth	-	Applicable Belt
BHTFWNF	28	-	S14M400	-	30

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys

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

Part Number:

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Data to be displayed: 30; 45; 60

Part Number
SHTF20S5M100
SHTF20S5M150
SHTF25S5M100
SHTF25S5M150
SHTF28S5M100
SHTF28S5M150
SHTF30S5M100
SHTF30S5M150

Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Belt Type	Belt Width (mm)	[T] Number of Teeth	Material	Surface Treatment	[d] Diameter (Shaft Bore) (mm)
42.38 €	1	Available	10 Days	10	S5M	10	20	EN 1.4301 Equiv.	Not Provided	-
47.19 €	1	Available	10 Days	10	S5M	15	20	EN 1.4301 Equiv.	Not Provided	-
52.14 €	1	Available	10 Days	10	S5M	10	25	EN 1.4301 Equiv.	Not Provided	-
63.13 €	1	Available	10 Days	10	S5M	15	25	EN 1.4301 Equiv.	Not Provided	-
48.21 €	1	Available	10 Days	10	S5M	10	28	EN 1.4301 Equiv.	Not Provided	-
49.60 €	1	Available	10 Days	10	S5M	15	28	EN 1.4301 Equiv.	Not Provided	-
53.52 €	1	Available	10 Days	10	S5M	10	30	EN 1.4301 Equiv.	Not Provided	-
67.56 €	1	Available	10 Days	10	S5M	15	30	EN 1.4301 Equiv.	Not Provided	-

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

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Open the technical drawing in the new window

Specification Tables - Toothed Pulleys/Timing Pulleys/Idler Pulleys

■S5M (Center Bearing)

Part Number			Shaft Dia. d	P.D.	O.D.	F	E	A	W	S	Bearing Dimensions			Unit Price
Type	Number of Teeth	Applicable Belt	Shaft Dia. d	P.D.	O.D.	F	E	A	W	S	No.	D	B	AHTF	KHTF	BHTF	MHTF	SHTF
AHTF KHTF BHTF MHTF SHTF	16	S5M100	6	25.46	24.50	32	20	11	16	5	606ZZx1	17	6					-
	18	S5M100	8	28.65	27.69	33	22	11	16	5	698ZZx1	19	6					-
	20	S5M100	8	31.83	30.87	36	24	11	16	5	698ZZx1	19	6
	20	S5M150	8	31.83	30.87	36	24	17	22	5	698ZZx2	19	6
	22	S5M100	8	35.01	34.05	40	27	11	16	4	628ZZx1	24	8					-
	22	S5M150	8	35.01	34.05	40	27	17	22	3	628ZZx2	24	8					-
	24	S5M100	10	38.20	37.24	45	30	11	16	4	6000ZZx1	26	8					-
	24	S5M150	10	38.20	37.24	45	30	17	22	3	6000ZZx2	26	8					-
	25	S5M100	10	39.79	38.83	45	30	11	16	4	6000ZZx1	26	8
	25	S5M150	10	39.79	38.83	45	30	17	22	3	6000ZZx2	26	8
	26	S5M100	10	41.38	40.42	48	35	11	16	3.5	6200ZZx1	30	9					-
	28	S5M100	10	44.56	43.60	48	35	11	16	3.5	6200ZZx1	30	9
	28	S5M150	10	44.56	43.60	48	35	17	22	6.5	6200ZZx1	30	9
	30	S5M100	12	47.75	46.79	52	36	11	16	3	6201ZZx1	32	10
	30	S5M150	12	47.75	46.79	52	36	17	22	6	6201ZZx1	32	10
	32	S5M100	12	50.93	49.97	55	40	11	16	3	6201ZZx1	32	10			-	-	-
	32	S5M150	10	50.93	49.97	55	40	17	22	3	6000ZZx2	26	8			-	-	-
	36	S5M100	12	57.30	56.34	61	45	11	16	3	6201ZZx1	32	10					-
	40	S5M100	12	63.66	62.70	67	50	11	16	3	6201ZZx1	32	10			-	-	-

■S5M (Both Sides Bearing)

Part Number			Shaft Dia. d	P.D.	O.D.	F	E	A	W	Dh	Bearing Dimensions			Unit Price
Type	Number of Teeth	Applicable Belt									No.	D	B	AHTFW	KHTFW	BHTFW	MHTFW
AHTFW KHTFW BHTFW MHTFW	16	S5M150	6	25.46	24.50	32	20	17	22	14.5	606ZZx2	17	6
		S5M250						27	32							-	-
	18	S5M150	8	28.65	27.69	33	22	17	22	16.5	698ZZx2	19	6
		S5M250						27	32							-	-
	20	S5M150	8	31.83	30.87	36	24	17	22	16.5	698ZZx2	19	6
		S5M250						27	32							-	-
	22	S5M150	8	35.01	34.05	40	27	17	22	19.5	608ZZx2	22	7
		S5M250						27	32							-	-
	24	S5M150	8	38.20	37.24	45	30	17	22	19.5	608ZZx2	22	7
		S5M250						27	32							-	-
	25	S5M100	6	39.79	38.83	45	30	11	16	13	696ZZx2	15	5
		S5M150						17	22
		S5M250						27	32	14.5	606ZZx2	17	6			-	-
	25	S5M100	8	39.79	38.83	45	30	11	16	16.5	698ZZx2	19	6
		S5M150						17	22
		S5M250						27	32	19.5	608ZZx2	22	7			-	-
	26	S5M150	10	41.38	40.42	48	35	17	22	25	6200ZZx2	30	9
		S5M250						27	32							-	-
	28	S5M100	10	44.56	43.60	48	35	11	16	19.5	6900ZZx2	22	6
		S5M150						17	22
		S5M250						27	32	25	6200ZZx2	30	9			-	-
	30	S5M150	12	47.75	46.79	52	36	17	22	25	6001ZZx2	28	8
		S5M250						27	32	27	6201ZZx2	32	10			-	-
	32	S5M150	12	50.93	49.97	55	40	17	22	25	6001ZZx2	28	8			-	-
		S5M250						27	32	27	6201ZZx2	32	10			-	-
	36	S5M150	15	57.30	56.34	61	45	17	22	29	6002ZZx2	32	9
		S5M250						27	32	30	6202ZZx2	35	11			-	-
	40	S5M150	15	63.66	62.70	67	50	17	22	29	6002ZZx2	32	9			-	-
		S5M250						27	32	30	6202ZZx2	35	11			-	-

■S8M (Center Bearing)

Part Number			Shaft Dia. d	P.D.	O.D.	F	E	A	W	S	Bearing Dimensions			Unit Price
Type	Number of Teeth	Applicable Belt	Shaft Dia. d	P.D.	O.D.	F	E	A	W	S	No.	D	B	AHTF	KHTF	BHTF	MHTF
AHTF KHTF BHTF MHTF	20	S8M150	12	50.93	49.56	58	40	17	22	6	6201ZZx1	32	10
	20	S8M250	15	50.93	49.56	58	40	28	33	5.5	6202ZZx2	35	11
	22	S8M150	12	56.02	54.65	61	45	17	22	6	6201ZZx1	32	10
	24	S8M150	12	61.12	59.74	67	50	17	22	6	6201ZZx1	32	10
		S8M250	12					28	33	6.5	6201ZZx2	32	10
		S8M300	15					33	38	8	6202ZZx2	35	11	-	-
		S8M400	15					44	49	13.5	6202ZZx2	35	11
	25	S8M150	15	63.66	62.29	70	56	17	22	5.5	6202ZZx1	35	11
	26	S8M150	15	66.21	64.84	74	58	17	22	5.5	6202ZZx1	35	11
	28	S8M150	15	71.30	69.93	80	60	17	22	5.5	6202ZZx1	35	11
	30	S8M150	15	76.39	75.02	87	67	17	22	5.5	6202ZZx1	35	11
		S8M250	15					28	33	5.5	6202ZZx2	35	11
		S8M300	20					33	38	5	6204ZZx2	47	14	-	-
		S8M400	20					44	49	10.5	6204ZZx2	47	14
	32	S8M150	20	81.49	80.12	87	67	17	22	4	6204ZZx1	47	14
	34	S8M150	20	86.58	85.21	95	75	17	22	4	6204ZZx1	47	14
	40	S8M150	25	101.86	100.49	111	90	17	22	3.5	6205ZZx1	52	15			-	-

■S8M (Both Sides Bearing)

Part Number			Shaft Dia. d	P.D.	O.D.	F	E	A	W	Dh	Bearing Dimensions			Unit Price
Type	Number of Teeth	Applicable Belt									No.	D	B	AHTFW	KHTFW	BHTFW	MHTFW
AHTFW KHTFW BHTFW MHTFW	22	S8M250	12	56.02	54.65	61	45	28	33	27	6201ZZx2	32	10
		S8M300						33	38					-	-
		S8M400						44	49
	24	S8M250	12	61.12	59.74	67	50	28	33	27	6201ZZx2	32	10
		S8M300						33	38					-	-
		S8M400						44	49
	25	S8M250	12	63.66	62.29	70	56	28	33	27	6201ZZx2	32	10
		S8M300						33	38					-	-
		S8M400						44	49
	26	S8M150	12	66.21	64.84	74	58	17	22	25	6001ZZx2	28	8
		S8M250						28	33
		S8M300						33	38	27	6201ZZx2	32	10	-	-
		S8M400						44	49
	28	S8M250	15	71.30	69.93	80	60	28	33	30	6202ZZx2	35	11
		S8M300						33	38					-	-
		S8M400						44	49
	30	S8M150	15	76.39	75.02	87	67	17	22	29	6002ZZx2	32	9
		S8M250						28	33
		S8M300						33	38	30	6202ZZx2	35	11	-	-
		S8M400						44	49
	30	S8M250	20	76.39	75.02	87	67	28	33	37	6004ZZx2	42	12
		S8M300						33	38	41	6204ZZx2	47	14	-	-
		S8M400						44	49
	32	S8M250	20	81.49	80.12	87	67	28	33	41	6204ZZx2	47	14
		S8M300						33	38					-	-
		S8M400						44	49
	34	S8M250	20	86.58	85.21	95	75	28	33	41	6204ZZx2	47	14
		S8M300						33	38					-	-
		S8M400						44	49
	40	S8M250	25	101.86	100.49	111	90	28	33	43	6005ZZx2	47	12			-	-
		S8M300						33	38	47	6205ZZx2	52	15			-	-
		S8M400						44	49							-	-

■S14M (Both Sides Bearing) On 2014 and later, S14M Type is to be delivered with flange included (but not swaged on).

Part Number			Shaft Dia. d	P.D.	O.D.	F	E	A	W	Dh	Bearing Dimensions			Unit Price
Type	Number of Teeth	Applicable Belt									No.	D	B	BHTFWNF
BHTFWNF	28	S14M400	30	124.78	121.98	136	101	46	53	57	6206ZZx2	62	16
		S14M600						67	74
		S14M400	40	124.78	121.98	136	101	46	53	73.5	6208ZZx2	80	18
		S14M600						67	74

For orders of 5 or more pieces of S14M, please request a quotation.

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Here to the Option Overview PDF

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Basic information

Type	Idlers with Teeth	Timing Pulleys/Idlers	Idlers

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Basic Attributes

Belt Type
S3M

S5M

S8M

S14M
Clear
Belt Width(mm)
10

15

25

30

40

60
Clear
[T] Number of Teeth
16

18

20

22

24

25

26

28

30

32

34

36

40
Clear
Material
- EN 1.1191 Equiv.
- Aluminum
  - 2000 Series Aluminum Alloy (Duralumin)
  - Aluminum Alloy 7000 series
- EN 1.4301 Equiv.
Clear
[d] Diameter (Shaft Bore)(mm)
6

8

10

12

15

20

25

30

40
Clear
Type
- AHTFW□□-S3M
- AHTFW□□-S5M
- AHTFW□□-S8M
- AHTF□□S5M
- AHTF□□S8M
- BHTFWNF
- BHTFW□□-S14M
- BHTFW□□-S5M
- BHTFW□□-S8M
- BHTF□□S5M
- BHTF□□S8M
- KHTFW□□-S5M
- KHTFW□□-S8M
- KHTF□□S5M
- KHTF□□S8M
- MHTFW□□-S5M
- MHTFW□□-S8M
- MHTF□□S5M
- MHTF□□S8M
- SHTF□□S5M
Clear
Surface Treatment
- Not Provided
- Black Oxide
- Clear Anodize
- Hard Clear Anodize
- Electroless Nickel Plating
Clear
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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.