Idlers HTD 8M

Brand :

MISUMI

Caution

Product Description

Economy series products, please order more than 2 pcs.

Economy HTD 8M Idler Pulley

Belt widthIdler pulleyFactory automation

- Cost-effective aluminum alloy

- Fits multiple belt widths.

- Variety of teeth counts available

- Central or side bearings

- Clear anodized for longevity

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product Overview

Economy series products of Timing Pulley, please order more than 2 pcs
Usually, flat-belt pulleys and flat belts are widely used in mechanisms design for transmitting rotational power generated by motors. Driving and transmission are realized through the friction fit between flat-belt pulleys and flat belts.

Product Features

■Timing Pulley Tooth Profile Engagement of MISUMI Economy series Idlers
・MISUMI Economy series idlers tooth profiles conform to JIS and ISO standards, matching with the standard belt tooth profile for smoother rotation.

5M Tooth Profile	MISUMI Economy series (Good engagement)	Products circulating on the market *
Engagement of Timing Pulley and Timing Belt
Clearance	Small	Large
Positioning Accuracy	Height	Low

* Problems of generic products of Timing Pulley in the market

■Rotation Stability of MISUMI Economy series Idlers

・MISUMI economy series idler uses MISUMI Economy series bearing with stabler quality and lower noise

・The tooth surface runout control of the Economy series idler is consistent with the standard product of Timing Pulley, and the belt drive is smoother.

(Unit: mm)

Diameter of Pulley Tooth Top Circle d0	5.96≤d0≤203.20
Runout Tolerance (Circumferential Runout)	≤0.13

Dimensional Drawing

Material Table

Material		Surface Treatment
Pulley	Flange	Surface Treatment
Aluminum Alloy	Aluminum Alloy	Clear Anodized

●Central Bearing (C-AHTF)		●Both Sides Bearing (C-AHTFW)
<Single Bearing>	<Double Bearing>

Bearing is pressed fit.

Bearing Accuracy: JIS/ISO Class 0 (Before press-fitting)

MISUMI makes no commitment to the bearing brand

Tapped Hole Size Table
(Shaft Bore Specs.: P·N)

d_H7 Shaft Hole ID	2-M (Coarse Thread)	Single Model of Fixing Screw	Box Model of Fixing Screw
8 to 12	M4	MSSU4-3	BOX-MSSU4-3
13 to 17	M5	MSSU5-4	BOX-MSSU5-4
18 to 20	M6	MSSU6-5	BOX-MSSU6-5

Timing pulleys are not provided with fixing screws. You may purchase them separately referring to the recommended fixing screw models.

Specification Table

Part Number			Shaft Diameter d	P.D.	O.D.	F	E	A	W	S	Bearing size
Type	Number of Teeth	Applicable Belt	Shaft Diameter d	P.D.	O.D.	F	E	A	W	S	No.	D	B
C-AHTF (Center Bearing)	20	H8M150	12	50.93	49.56	58	40	17	22	6	6201ZZ×1	32	10
	20	H8M250	15	50.93	49.56	58	40	28	33	5.5	6202ZZ×2	35	11
	22	H8M150	12	56.02	54.65	61	45	17	22	6	6201ZZ×1	32	10
	24	H8M150	12	61.12	59.74	67	50	17	22	6	6201ZZ×1	32	10
		H8M250	12					28	33	6.5	6201ZZ×2	32	10
		H8M300	15					33	38	8	6202ZZ×2	35	11
		H8M400	15					44	49	13.5	6202ZZ×2	35	11
	25	H8M150	15	63.66	62.29	70	56	17	22	5.5	6202ZZ×1	35	11
	26	H8M150	15	66.21	64.84	74	58	17	22	5.5	6202ZZ×1	35	11
	28	H8M150	15	71.3	69.93	80	60	17	22	5.5	6202ZZ×1	35	11
	30	H8M150	15	76.39	75.02	87	67	17	22	5.5	6202ZZ×1	35	11
		H8M250	15					28	33	5.5	6202ZZ×2	35	11
		H8M300	20					33	38	5	6204ZZ×2	47	14
		H8M400	20					44	49	10.5	6204ZZ×2	47	14
	32	H8M150	20	81.49	80.12	87	67	17	22	4	6204ZZ×1	47	14
	34	H8M150	20	86.58	85.21	95	75	17	22	4	6204ZZ×1	47	14
	40	H8M150	25	101.86	100.49	111	90	17	22	3.5	6205ZZ×1	52	15

Part Number			Shaft Diameter d	P.D.	O.D.	F	E	A	W	Dh	Bearing size
Type	Number of Teeth	Applicable Belt									No.	D	B
C-AHTFW (Both Sides Bearing)	22	H8M250	12	56.02	54.65	61	45	28	33	27	6201ZZ×2	32	10
		H8M300						33	38
		H8M400						44	49
	24	H8M250	12	61.12	59.74	67	50	28	33	27	6201ZZ×2	32	10
		H8M300						33	38
		H8M400						44	49
	25	H8M250	12	63.66	62.29	70	56	28	33	27	6201ZZ×2	32	10
		H8M300						33	38
		H8M400						44	49
	26	H8M150	12	66.21	64.84	74	58	17	22	25	6001ZZ×2	28	8
		H8M250						28	33
		H8M300						33	38	27	6201ZZ×2	32	10
		H8M400						44	49
	28	H8M250	15	71.3	69.93	80	60	28	33	30	6202ZZ×2	35	11
		H8M300						33	38
		H8M400						44	49
	30	H8M150	15	76.39	75.02	87	67	17	22	29	6002ZZ×2	32	9
		H8M250						28	33
		H8M300						33	38	30	6202ZZ×2	35	11
		H8M400						44	49
	30	H8M250	20	76.39	75.02	87	67	28	33	37	6004ZZ×2	42	12
		H8M300						33	38	41	6204ZZ×2	47	14
		H8M400						44	49
	32	H8M250	20	81.49	80.12	87	67	28	33	41	6204ZZ×2	47	14
		H8M300						33	38
		H8M400						44	49
	34	H8M250	20	86.58	85.21	95	75	28	33	41	6204ZZ×2	47	14
		H8M300						33	38
		H8M400						44	49
	40	H8M250	25	101.86	100.49	111	90	28	33	43	6005ZZ×2	47	12
		H8M300						33	38	47	6205ZZ×2	52	15
		H8M400						44	49

Usage Method

Usage Method Example of Timing Pulley Drawing	Instructions for Use of Timing Belt Idlers and Timing Belt
	①Timing Pulley Driving The driven wheel is driven by the driving wheel for transmission
	②Timing Pulley Linear driving Reciprocating motion is carried out through the self-end timing toothed belt.

Usage Method Example of Timing Pulley Drawing	Instructions for Use of Timing Belt Idlers and Timing Belt
	③Timing Pulley Conveyance Plates are conveyed by two timing toothed belts
	④Timing Pulley Traction transmission Workpieces are clamped and transmitted by the belt

HTD 8M timing belt idlers, suitable for MISUMI HTD 8M timing belts.

Example of Use

■Timing Pulley Mechanism name
Belt tension device (manual)

■Mechanism function
1. Move the roller on the adjustment side, and tighten and fix it when the conveyor belt opens.
2. For multiple driving applications, the engagement rate can be improved by setting the roller in the middle position.

■ Role of the timing belt idler
1. The belt is tensioned by fixing the belt assembly distance with the timing belt idler
and with the assistance of the urethane roller.

For more information, please click Example for Belt Tension Device.

Related Industries

Semiconductor	Automotive	Smart phone

Medical	Electronic & Electrical Appliances	Robotics

Precautions

Bearing is pressed fit.
Timing Pulley

Bearing Accuracy: JIS/ISO Class 0 (Before press-fitting)
Timing Pulley

MISUMI makes no commitment to the bearing brand

Related Products

Idlers HTD 3M	Idlers HTD 5M	Timing Belts HTD 8M

Typical Timing Pulley model C-HTPA14H3M060-K-P5	Typical Timing Pulley model: C-HTPA14H5M090-A-N8	Typical Timing Pulley model: C-HTBN1000H8M-200
Advantages: short delivery time, multiple types	Advantages: Short delivery time, multiple types	Advantages: short delivery time, multiple types