Idlers S8M/S14M

Brand :

MISUMI

Caution

Product Description

This is an economy item, The price is cheaper than the MISUMI standard product.

Product Overview

Usually, timing pulleys, timing idlers 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, timing idlers and timing belts.

Dimensional Drawing

Idler Specifications Diagram Center Bearing Type Single Bearing

Bearing is pressed fit.

Bearing accuracy JIS B1514 Class 0 / GB T 307-94 P0 (before press-fitting).

MISUMI does not guarantee the bearing brand.

Material Specifications

Type		Material				Surface Treatment
Center Bearing Type	Both Sides Bearing Type	Body		Flange	Bearing
		S8M	S14M
E-AHTF	E-AHTFW	Aluminum	-	Aluminum	Steel	Clear Anodized
E-KHTF	E-KHTFW					Hard Anodized^*
E-BHTF	E-BHTFW	General structural steel or carbon steel		SPCC		Black Oxide
E-MHTF	E-MHTFW					Electroless Nickel Plating

*The surface hardness of hard anodized treatment is 300HV~.

If there are requirements for rust prevention, give priority to products made of aluminum alloy or with surface treatment of electroless nickel plating.
For details, please click

Anti-rust performance and maintenance of metal materials and surface treatment

Specification Table

■ Size Specification Table S8M Type (Center Bearing Type)

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
E-AHTF E-KHTF E-BHTF E-MHTF	20	S8M150	12	50.93	49.56	58	40	17	22	6	6201ZZ × 1	32	10
	20	S8M250	15	50.93	49.56	58	40	28	33	5.5	6202ZZ × 2	35	11
	22	S8M150	12	56.02	54.65	61	45	17	22	6	6201ZZ × 1	32	10
	24	S8M150	12	61.12	59.74	67	50	17	22	6	6201ZZ × 1	32	10
		S8M250	12					28	33	6.5	6201ZZ × 2	32	10
		S8M300*	15					33	38	8	6202ZZ × 2	35	11
		S8M400	15					44	49	13.5	6202ZZ × 2	35	11
	25	S8M150	15	63.66	62.29	70	56	17	22	5.5	6202ZZ × 1	35	11
	26	S8M150	15	66.21	64.84	74	58	17	22	5.5	6202ZZ × 1	35	11
	28	S8M150	15	71.3	69.93	80	60	17	22	5.5	6202ZZ × 1	35	11
	30	S8M150	15	76.39	75.02	87	67	17	22	5.5	6202ZZ × 1	35	11
		S8M250	15					28	33	5.5	6202ZZ × 2	35	11
		S8M300*	20					33	38	5	6204ZZ × 2	47	14
		S8M400	20					44	49	10.5	6204ZZ × 2	47	14
	32	S8M150	20	81.49	80.12	87	67	17	22	4	6204ZZ × 1	47	14
	34	S8M150	20	86.58	85.21	95	75	17	22	4	6204ZZ × 1	47	14
E-AHTF E-KHTF	40	S8M150	25	101.86	100.49	111	90	17	22	3.5	6205ZZ × 1	52	15

All specifications marked with * are only applicable to E-BHTF and E-MHTF.

■ Size Specification Table S8M Type (Double-Sided Bearing Type)

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
E-AHTFW E-KHTFW E-BHTFW E-MHTFW	22	S8M250	12	56.02	54.65	61	45	28	33	27	6201ZZ × 2	32	10
		S8M300*						33	38
		S8M400						44	49
	24	S8M250	12	61.12	59.74	67	50	28	33	27	6201ZZ × 2	32	10
		S8M300*						33	38
		S8M400						44	49
	25	S8M250	12	63.66	62.29	70	56	28	33	27	6201ZZ × 2	32	10
		S8M300*						33	38
		S8M400						44	49
	26	S8M150	12	66.21	64.84	74	58	17	22	25	6001ZZ × 2	28	8
		S8M250						28	33
		S8M300*						33	38	27	6201ZZ × 2	32	10
		S8M400						44	49
	28	S8M250	15	71.3	69.93	80	60	28	33	30	6202ZZ × 2	35	11
		S8M300*						33	38
		S8M400						44	49
	30	S8M150	15	76.39	75.02	87	67	17	22	29	6002ZZ × 2	32	9
		S8M250						28	33
		S8M300*						33	38	30	6202ZZ × 2	35	11
		S8M400						44	49
	30	S8M250	20	76.39	75.02	87	67	28	33	37	6004ZZ × 2	42	12
		S8M300*						33	38	41	6204ZZ × 2	47	14
		S8M400						44	49
	32	S8M250	20	81.49	80.12	87	67	28	33	41	6204ZZ × 2	47	14
		S8M300*						33	38
		S8M400						44	49
	34	S8M250	20	86.58	85.21	95	75	28	33	41	6204ZZ × 2	47	14
		S8M300*						33	38
		S8M400						44	49
E-AHTFW E-KHTFW	40	S8M250	25	101.86	100.49	111	90	28	33	43	6005ZZ × 2	47	12
		S8M300						33	38	47	6205ZZ × 2	52	15
		S8M400						44	49

All specifications marked with * are only applicable to E-BHTFW and E-MHTFW.

■ Size Specification Table S14M Type (Double-Sided Bearing Type)

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
E-BHTFW	28	S14M400	30	124.78	121.98	136	101	46	53	57	6206ZZ × 2	62	16
		S14M600						67	74
		S14M600	40	124.78	121.98	136	101	67	74	73.5	6208ZZ × 2	80	18

Product Features

Feature 1: S-type timing belt idler, suitable for high torque transmission design.
Feature 2: S-type timing belt idler offers high transmission accuracy and efficiency, making it suitable for high-precision conveying designs.
Feature 3: S-type timing belt idlers can be designed and used in mechanisms with longer shaft distances, making them suitable for most machines and equipment.
Feature 4: MISUMI timing belt idlers comply with industry standards, ensuring stable procurement and easy equipment maintenance.
Feature 5: MISUMI timing belt idlers are available in a variety of materials to suit different designs and usage environments.
Feature 6: MISUMI timing belt idlers are manufactured with excellent craftsmanship and attention to detail, giving customers greater confidence in their purchase.

Usage Method

Usage Method Example Drawing	Usage Method of Timing Belt Idler and Timing Belt
	(1) For belt tensioning Adjust the tension on the inside of the timing belt using an idler pulley
	②Linear driving Reciprocating motion is carried out through the self-end timing toothed belt.

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

S-type timing belt idler, suitable for MISUMI's Standard S-type timing belt and Economy S-type timing belt.

Precautions

(1) If rust prevention is required, please give priority to products made of aluminum alloy, austenitic stainless steel, or with electroless nickel plating surface treatment.
Please click

Rust Prevention Performance and Maintenance of Metal Materials and Their Surface Treatments
(2) Starting from 2014, flanges of S14M specification are not riveted and will be shipped separately together with the order.

Example of Use

Example drawing of a belt tensioning device designed using MISUMI timing idler pulley

■Organization Name
Belt Tensioner (Manual)

■ Mechanism Function
1. Moves the roller on the adjustment side to tighten and secure it while the conveyor belt is open.
2. When using multiple drives, increase the engagement rate by setting the roller to the center position.

■ Function of the Timing Belt Idler

1.	Fix the belt assembly distance with a timing belt idler
	At the same time, the polyurethane roller assists in tensioning the belt

Related Industries

Semiconductor	Automotive	Smart phone

Medical	Electronic & Electrical Appliances	Robotics

High Torque Timing Pulleys S2M Type	Long Toothed Timing Belt Urethane Number of Teeth specified joint processing	High-Frequency Quenched Spur Gear, High Hardness Shaft Hole Specified Type

Typical model:	Typical model:	Typical model: