Why does the flange drop during the use of a timing belt idler?

The function of the flange is to prevent production accidents caused by deviation and drop of the timing belt. Therefore, the flange drops mainly because it is squeezed off by the timing belt that has deviated for a long time. We recommend that the customer regularly check the condition of the timing belt of the equipment to avoid its deviation.

Is it possible that no flange is attached to the timing belt idler product?

Yes. Generally, the timing belt idler is shipped with flange attached. If the customer selects NFC (flange not attached) and RFC·LFC (flange attached on one side only) of MISUMI alteration specifications, no flange will be attached.

Why is the color of MISUMI's clear anodized timing belt idler similar with the hard anodized one?

As the clear anodized and hard anodized coating of MISUMI's timing belt idler is relatively thin (about 2 microns), it is difficult to distinguish the color.

It mainly plays the role of tension adjustment and auxiliary transmission of the timing belt.

What does the number in the timing belt idlers S2M, S3M, P2M, P3M, T5, T10, 2GT, 3GT, etc. mean?

It mainly represents the tooth pitch of the belt, that is, the distance between two adjacent teeth. They are also the tooth profile models in the timing belt industry.

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Part Number Complete

C-AHTF20H5M090

Belt Width Used Number of Teeth Shaft Bore Dia. d Bearing Position type Days to Ship

Specification/Dimensions

Belt Width Used(mm)
9

15
Clear
Number of Teeth(T)
20

25

26

30

32
Clear
Shaft Bore Dia. d(mm)
8

10

12
Clear
Bearing Position
- Both Sides Bearing
- Center Bearing
Clear
type
- C-AHTFW□□-H5M
- C-AHTF□□H5M
Clear

Days to Ship

All

10 Day(s) or Less
Clear

Specify Alterations

Idlers HTD 5M

Volume Discount

Check FAQ of this product (5 items)

Brand :

MiSUMi Economy

Order Qty :
Total Price :

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Product Description

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Idlers HTD 5M
Idlers for timing pulleys are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Belt Width Used (mm.) : 9, and 15
● Applicable with Belt Type : 5M
● Number of Teeth : 20, 25, 26, 30, and 32
● Shaft Bore Diameter (mm.) : 8 ,10 , and 12
● Bearing Position : Central Bearing (Single/Double) and Both Sides Bearing
● Material :
Body and Flange : Aluminum Alloy
Bearing : Steel
● Surface treatment : Clear Anodized
[Application]
Idlers for timing pulleys are used to maintain proper tension and alignment in timing belt systems

Economy HTD 5M Idler Pulley

Timing beltIdler pulleyAluminum alloy

- Affordable aluminum construction

- Available in multiple teeth counts.

- Compatible with 5M belt type

- Central or both sides bearing options

- Clear anodized surface for durability

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product of Timing Pulley Overview

Usually, Timing Pulley, 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.

Product of Timing Pulley Features

■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 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, 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 of Timing Pulley Drawing

●Central Bearing		●Both Sides Bearing
<Single Bearing>	<Double Bearing>

Bearing is pressed fit.
Timing Pulley

Bearing accuracy JIS B1514 Class 0 (Before press-fitting)

Specifications of Timing Pulley Overview

Timing Pulley Material			Surface Treatment
Body	Flange	Bearing	Surface Treatment
Aluminum Alloy	Aluminum Alloy	Steel	Clear Anodized

Usage of Timing Pulley Method

Usage Method Example of Timing Pulley Drawing	Instructions for Use of Timing Belt Idlers and Timing Belt
	①Timing Pulley Belt tensioning Adjust the tension on the inside of the timing belt via the timing belt idler.
	②Timing Pulley Linear driving Reciprocating motion is carried out through the self-end timing toothed belt.

Usage Method Example 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 timing belt idlers, suitable for MISUMI Economy series HTD Timing Belts.

Example of Timing Pulley Use

Example drawing of a belt tension device designed using MISUMI timing belt idler

■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 of Timing Pulley Industries

Semiconductor	Automotive	Smart phone

Timing Pulley Medical	Electronic & Electrical Appliances	Robotics

Timing Pulley Precautions

① If there are requirements on rust prevention, give priority to products made of the aluminum alloy.
Please click on Timing Pulley

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

Related of Timing Pulley Products

Flat-belt idlers, Width (T), 6 to 32 mm	Timing Belts H3M	Timing Belts H5M

Typical Timing Pulley model: HBG15-6	Typical Timing Pulley model: C-HTBN105H3M-60	Typical Timing Pulley model: C-HTBN200H5M-90
Advantages: short delivery time, multiple types	Advantages: short delivery time, multiple types	Advantages: short delivery time, multiple types

: 30; 45; 60

Part Number
C-AHTF20H5M090
C-AHTF20H5M150
C-AHTF25H5M090
C-AHTF25H5M150
C-AHTF30H5M090
C-AHTF30H5M150
C-AHTFW20-H5M150-8
C-AHTFW26-H5M150-10
C-AHTFW32-H5M150-12

Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Belt Width Used (mm)	Number of Teeth (T)	Shaft Bore Dia. d (mm)	Bearing Position
₹ 1,239.85	2 Piece(s)	Available	10 Day(s)	10	9	20	8	Center Bearing
₹ 1,346.12	2 Piece(s)	Available	10 Day(s)	10	15	20	8	Center Bearing
₹ 1,445.34	1 Piece(s)	Available	10 Day(s)	10	9	25	10	Center Bearing
₹ 1,681.20	2 Piece(s)	Available	10 Day(s)	10	15	25	10	Center Bearing
₹ 1,445.34	1 Piece(s)	Available	10 Day(s)	10	9	30	12	Center Bearing
₹ 1,526.70	2 Piece(s)	Available	10 Day(s)	10	15	30	12	Center Bearing
₹ 1,820.49	2 Piece(s)	Available	10 Day(s)	10	15	20	8	Both Sides Bearing
₹ 1,621.82	1 Piece(s)	Available	10 Day(s)	10	15	26	10	Both Sides Bearing
₹ 2,001.26	2 Piece(s)	Available	10 Day(s)	10	15	32	12	Both Sides Bearing

Dimensional Drawing

●Central Bearing		●Both Sides Bearing
<Single Bearing>	<Double Bearing>

Bearing is pressed fit.

Bearing accuracy JIS B1514 Class 0 (Before press-fitting)

Specification Table

■Material Specification Table

Material			Surface Treatment
Body	Flange	Bearing	Surface Treatment
Aluminum Alloy	Aluminum Alloy	Steel	Clear Anodized

■Dimension Specification Table 5M (Central Bearing)

Part Number		Shaft Dia.	P.D.	O.D.	F	E	A	W	S	Bearing size
Number of Teeth	Applicable Belt	d	P.D.	O.D.	F	E	A	W	S	No.	D	B
20	H5M090	8	31.83	30.87	36	24	11	16	5	698ZZ×1	19	6
20	H5M150	8	31.83	30.87	36	24	17	22	5	698ZZ×2	19	6
25	H5M090	10	39.79	38.83	45	30	11	16	4	6000ZZ×1	26	8
25	H5M150	10	39.79	38.83	45	30	17	22	3	6000ZZ×2	26	8
30	H5M090	12	47.75	46.79	52	36	11	16	3	6201ZZ×1	32	10
30	H5M150	12	47.75	46.79	52	36	17	22	6	6201ZZ×1	32	10

■Dimension Specification Table 5M (Both Sides Bearing)

Part Number		Shaft Dia.	P.D.	O.D.	F	E	A	W	Dh	Bearing size
Number of Teeth	Applicable Belt	d	P.D.	O.D.	F	E	A	W	Dh	No.	D	B
20	H5M150	8	31.83	30.87	36	24	17	22	16.5	698ZZ×2	19	6
26	H5M150	10	41.38	40.42	48	35	17	22	25	6200ZZ×2	30	9
32	H5M150	12	50.93	49.97	55	40	17	22	25	6001ZZ×2	28	8

MISUMI makes no commitment to the bearing brand

Basic Information

Type	Idlers with Teeth	Belt Type	5M	Material	Ultra Super Duralmin Type Aluminum Alloy
Surface Treatment	Clear Anodize	Timing Pulley / Idler	Idlers

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

Frequently asked question (FAQ)

Question: Why does the flange drop during the use of a timing belt idler?: Answer: The function of the flange is to prevent production accidents caused by deviation and drop of the timing belt. Therefore, the flange drops mainly because it is squeezed off by the timing belt that has deviated for a long time. We recommend that the customer regularly check the condition of the timing belt of the equipment to avoid its deviation.
Question: Is it possible that no flange is attached to the timing belt idler product?: Answer: Yes. Generally, the timing belt idler is shipped with flange attached. If the customer selects NFC (flange not attached) and RFC·LFC (flange attached on one side only) of MISUMI alteration specifications, no flange will be attached.
Question: Why is the color of MISUMI's clear anodized timing belt idler similar with the hard anodized one?: Answer: As the clear anodized and hard anodized coating of MISUMI's timing belt idler is relatively thin (about 2 microns), it is difficult to distinguish the color.
Question: What is the idler?: Answer: It mainly plays the role of tension adjustment and auxiliary transmission of the timing belt.
Question: What does the number in the timing belt idlers S2M, S3M, P2M, P3M, T5, T10, 2GT, 3GT, etc. mean?: Answer: It mainly represents the tooth pitch of the belt, that is, the distance between two adjacent teeth. They are also the tooth profile models in the timing belt industry.

Check other FAQ (2 items) Hide

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