Timing Pulleys High Torque/S8M

Brand :

MISUMI

Caution

Product Description

Product Overview

Usually, timing pulleys and timing belts are widely used to design mechanisms for transmitting rotational power generated by motors.
Driving and transmission are realized through the engagement between the teeth of timing pulleys and timing belts.

Dimensional Drawing

Specifications Overview

Part Number				Material		Surface Treatment
Belt Width 15mm	Belt Width 25mm	Belt Width 30mm	Belt Width 40mm	Pulley	Flange
A: 17 W: 22 L: 37(42)	A: 28 W: 33 L: 48(53)	A: 33 W: 38 L: 53(58)	A: 44 W: 49 L: 64(69)	Pulley	Flange
E-HTPA□□S8M150	E-HTPA□□S8M250	E-HTPA□□S8M300	E-HTPA□□S8M400	Aluminum Alloy	Aluminum Alloy	Clear Anodized
E-HTPB□□S8M150	E-HTPA□□S8M250	E-HTPA□□S8M300	E-HTPA□□S8M400			Black Anodized
E-HTPK□□S8M150	E-HTPK□□S8M250	E-HTPK□□S8M300	E-HTPK□□S8M400			Hard Clear Anodize^＊
E-HTPM□□S8M150	E-HTPM□□S8M250	E-HTPM□□S8M300	E-HTPM□□S8M400	Equivalent to S45C	SPCC	Black Oxide Coating
E-HTPP□□S8M150	E-HTPP□□S8M250	E-HTPP□□S8M300	E-HTPP□□S8M400	Equivalent to S45C	SPCC	Electroless Nickel Plating

*Film hardness of hard clear anodize is 300HV~.

The flange is riveted, and set screws are included for shaft bore specs. P, N or C.

Values in () for dimension L apply to the number of teeth 44～72.

If there are requirements for rust prevention, give priority to products made of aluminum alloy, stainless steel SUS304 and with surface treatment of electroless nickel plating.
For anti-rust performance and maintenance of metal materials and surface treatment, click

here.

Specification Table

Part Number			Pulley Shape	Shaft Bore Specs.	Shaft Bore Specs. (1mm increments)						P.D.	O.D.	D	F	E
Part Number					H Round Hole		P Round Hole+Threaded Hole		N Keyway Hole + Threaded Hole
Type	Number of Teeth	Type & Nominal Width			d_H7
Type	Number of Teeth	Type & Nominal Width			Shape A	Shape B	Shape A	Shape B	Shape A	Shape B
(Aluminum Alloy) E-HTPA E-HTPB E-HTPK (S45C equivalent) E-HTPM E-HTPP	18	S8M150 ＊A ：17 ＊W ：22 ＊L ：37 (L：42) S8M250 ＊A ：28 ＊W ：33 ＊L ：48 (L：53) S8M300 ＊A ：33 ＊W ：38 ＊L ：53 (L：58) S8M400 ＊A ：44 ＊W ：49 ＊L ：64 (L：69)	A B	H P N	12～32	12~28	12～26	12~22	12~26	12~20	45.84	44.46	32	52	36
	19				12～36	12~31	12~28	12~25	12~28	12~20	48.38	47.01	35	55	40
	20				12～36	12~32	12~30	12～26	12~30	12~22	50.93	49.56	36	58	40
	21				12～41	12~36	12～32	12~30	12~32	12~24	53.48	52.10	40	61	45
	22				12～41	12~37	12~34	12~30	12~34	12~25	56.02	54.65	41	61	45
	24				12～46	12~42	12~40	12~34	12~40	12~28	61.12	59.74	46	67	50
	25				12～52	12～44	12~40	12~36	12~40	12～28	63.66	62.29	48	70	56
	26				14～54	14~47	14~45	14~39	14～45	14~31	66.21	64.84	51	74	58
	28				14～56	14～51	14~48	14～43	14~48	14~35	71.30	69.93	55	80	60
	30				14～63	14~56	14～50	14~46	14~50	14~38	76.39	75.02	60	87	67
	32				14～63	14~59	14~55	14~49	14～55	14~45	81.49	80.12	63	87	67
	34				16~67	16~66	16~60	16~56	16～55	16~48	86.58	85.21	70	95	75
	36				16~72	16～71	16~65	16~61	16～55	16～50	91.67	90.30	75	99	80
	38				16～76	16~76	16~65	16~65	16～55	16~50	96.77	95.39	80	104	84
	40				20~85	20~80	20～70	20～65	20～55	20～55	101.86	100.49	85	111	90
	44				20～85	20~80	20～70	20～70	20～55	20～55	112.05	110.67	90	119	100
	48				20～85	20～85	20～70	20～70	20～55	20～55	122.23	120.86	100	127	105
	50				20～85	20～85	20～70	20～70	20～55	20～55	127.32	125.95		135	115
	60				20～85	20～85	20～70	20～70	20～55	20～55	152.79	151.42		160	140
	72				20～85	20～85	20～70	20～70	20～55	20～55	183.35	181.97	100	190	170

Z-d≥2 for Shaft Bore Specs. V or F.

Q(R)-d≥2 for Shaft Bore Specs. Y.

Values in () for dimension L apply to the number of teeth 44～72.

Shaft Bore Dia. 51~55 are not available for Shaft Bore Specs. N.

Shaft Bore Dia. 13, 14, 17 and 21~55 are not available for Shaft Bore Specs. C.

Product Features

Feature 1: S specification timing pulleys, suitable for high torque transmission and conveyance design.
Feature 2: S specification timing pulleys provide great transmission accuracy and efficiency, making them suitable for high-precision transmission and conveyance designs.
Feature 3: S specification timing pulleys can be designed for use in mechanisms with larger shaft spacing, applicable to most mechanisms and equipment.
Feature 1: MISUMI timing pulleys satisfy industrial standards, enabling for a reliable purchase and simple equipment maintenance.
Feature 2: MISUMI timing pulleys are available in various materials and suitable for a wide range of design environments.
Feature 3: MISUMI timing pulleys are made with meticulous attention to detail, allowing customers to make purchases with more confidence.

Features of MISUMI Timing Pulleys S8M timing pulley

①Well processed teeth→High processing accuracy

②Threaded hole deburred→Longer service life of timing belt

③Evenly press-fitted retainer→Firm retainer, not easy to fall off

④Beautiful tooth shape→Precisely engaged belt, with high concentricity

Usage Method

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

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

Shape S timing pulleys, suitable for MISUMI standard and economy series S specification belts.

Precautions

①For Shaft Bore Specs. P (round hole+threaded hole) or N, the attached set screws are shipped in the same package (may drop in the packaging bag).
②There is no threaded hole for Shaft Bore Specs. H (round hole).
③There may be no surface treatment in the shaft bore.
④If there are requirements on the fit clearance between timing pulley and toothed timing belt, please select MISUMI non-backlash timing pulleys. For details, refer to “Non-Backlash Timing Pulleys S8M” on MISUMI official website.
⑤For the N keyway hole, the position relation between keyway and tooth is not fixed.

Example of Use

Example drawing of a workpiece reversal transfer mechanism designed using MISUMI timing pulley

Example Name:
        Workpiece Reversal Transfer Mechanism
Purpose:
        Rotates the workpiece on the conveyor belt by 90 degrees and transfers it to the next process, using the transmission power of the timing pulley and the timing belt.
        At this time, the clamping mechanism rotates 180 degrees and does not change the direction of the workpiece relative to the conveying direction at the same time during transfer.
Purpose of Timing Pulley:
        The transmission of the timing pulley and the timing belt changes the placement direction of the workpiece while transferring the workpiece. (Applicable to S specification and GT specification timing pulleys)

For detailed information, click

here.

Application Industries

Semiconductor	Automotive	Smart Phones

Medical	Electronic & Electrical	Robotics

Idler	High Torque Toothed Timing Belts S8M	Toothed Timing Belts

Representative model: AHTF20S8M150	Representative model: HTBN480S8M-150	Representative model: C-HTBN656S8M-150