Timing belts / open / XL, L, H, T#, AT#, S#M, P#M / CR (Neoprene), PUR / glass fibre, steel

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Back to the Category Timing Belt

Technical Drawing - Timing Belts

Open End Belts/Polyurethane/Chloroprene Rubber:Related Image

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Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Timing Belts

Type	Material
Type	Main Body	Core Wire
TBOG, HTBOG, PTBOG	Chloroprene Rubber (Black)	Glass Cord
TBO, HTBO, TTBO	Polyurethane (White)	Steel Cord

Further specifications can be found under the tab More information.

Composition of a Product Code - Timing Belts

Part Number			-	Number of Teeth

Type	Belt Type	Belt Nominal Width
TBO HTBOG TTBO	- H - S5M - AT5	100 100 150	- - -	1100 500 1200

General Information - Timing Belts

Timing Belt Selection Details

- Material: chloroprene rubber (neoprene), polyurethane (PU)

- Tension cord: glass fibre, aramid fibre, steel

- Width (mm): 1 to 101.6

- Width (in.): 0.19 to 4

- Profile (metric): T5, T10, AT5, AT10, S2M, S3M, S5M, S8M, S14M, MTS8M, EV5GT, EV8YU, 2GT, 3GT, MA3, MA5, MA8, P2M, P3M, P5M, P8M, UP5M, UP8M

- Profile (in.): MXL, XL, L, H

Description/Basics

Timing belts for mechanical engineering are intended for force and power transmission. Depending on the interlocking of the profile, they can alternatively be used for the material flow (transportation) or for positioning.
Timing belts are more maintenance-friendly, efficient and durable compared to roller chains.

Maintenance-friendly: timing belts do not require lubrication, are easy to replace and are very durable, as they do not sag. These properties significantly reduce maintenance costs.

Efficient: drive belts are largely made of natural rubber or polyurethane. As a result, timing belts withstand high speeds. A further advantage of these materials is the weight reduction compared to conventional metal drives. Timing belts are also known for low-noise running and contribute to the general smooth running of an application.

Durability: due to the inserted tension cord made of glass fibre or aramid fibre (Kevlar), timing belts can withstand high tensile stresses and do not tend to sag. An additional layer of nylon fabric on the interlocked side reduces wear due to abrasion and increases the service life.

Timing belts can be used in many ways. The belt profile that suits your application depends on the task of the timing belt. MISUMI offers a suitable belt profile for almost every type of application.

Drive: timing belts are used even at high torque. Drive belts with a rounded trapezoidal profile (e.g., S8M) are often used to drive mechanical components. These are particularly well suited for slip-free transmission of high forces, which can occur in drives of various applications or machines.

Positioning: a semi-circular profile (e.g., GT) is often used for positioning via timing belts. Round profile timing belts are often used in 3D printers and precise scanners. The round shape also offers the advantage that there is little play (reverse play) when the direction changes.

Material flow: timing belts can also be used to transport loads in conveyor systems. A straight trapezoidal profile is often used for this purpose (e.g., AT ). This profile provides a large profile area for load intake and transmission. The MISUMI range also includes conveyor timing belts with nylon fabric on the bearing surface.

An overview of the profile forms by application type can be found in the PDF Overview.

The amount of transmission power depends on many factors. The exact maximum load must be considered and calculated individually according to the application. The calculation for timing belts can be found in the selection of Timing Belts as PDF.
In order not to fall below the minimum number of teeth, the minimum size of the timing pulleys should be considered individually.
In general, a timing belt should be provided with the appropriate pretension to maximize the service life of the timing belt. If the pretension is too low, a jump (slip) can cause wear of the timing belt.

Application Examples - Timing Belts

Application example: synchronous belt - with screw-on terminal and drive belt - synchronous belt for positioning

Application example: workpiece carrier
(1) Stopper bolt with rubber, (2) belt conveyor, (3) workpiece carrier

Application example: synchronous belt drive - synchronous pulley with crimp disc - idler pulley with crimp disc - synchronous tensioner

Application example: of toothed belt drives
(1) Toothed belt, (2) driven Timing pulleys with crimp disc, (3) idler pulley with crimp disc, (4) driving Timing pulleys with crimp disc

Application example: Timing belt
(1) Linear guide, (2) mounting plate, (3) Timing belt, (4) Screw-on terminal

Application example - linear ball bushing and linear shaft synchronous belt - synchronous belt with flange bearings

Application example: Timing belt
(1) Bolt-on terminal, (2) Timing belt, (3) Linear shaft, (4) Linear bushings

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
TBO-XL025-[30-3937/1]
TBO-XL037-[30-3937/1]
TBO-XL050-[30-3937/1]
TBOG-XL050-[30-3937/1]

Minimum order quantity	Standard Shipping Days ?	RoHS	Belt material	Core Wire Material	Belt Type	Belt Width (mm) (mm)	Belt Width (Inch) (Inch)	Belt-shaped type	Number of Teeth (Teeth)
1	5 Days	-	Polyurethane Belt	Steel Cord	XL	6.4	0.25	Trapezoidal Tooth Profile Circular Type	30 ～ 3937
1	5 Days	-	Polyurethane Belt	Steel Cord	XL	9.5	0.37	Trapezoidal Tooth Profile Circular Type	30 ～ 3937
1	5 Days	-	Polyurethane Belt	Steel Cord	XL	12.7	0.5	Trapezoidal Tooth Profile Circular Type	30 ～ 3937
1	5 Days	10	Rubber Belt	[Glass Fiber] Glass Cord	XL	12.7	0.5	Trapezoidal Tooth Profile Circular Type	30 ～ 3937

Back to the Category Timing Belt

Technical Drawing - Timing Belts

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Specification Tables - Timing Belts

Belt Type	Pitch	2θ(°)	H	h	i	L	Unit Mass g/m (Width: 10mm)
Belt Type	Pitch	2θ(°)	H	h	i	L	Chloroprene Rubber	Polyurethane
XL	5.08	50°	2.25	1.25	1.0	1.35	26.77	22.17
L	9.525	40°	3.5	1.9	1.6	3.2	37.8	36.22
H	12.7	40°	4.3	2.3	2.0	4.4	52.36	41.22
T5	5	40°	2.2	1.2	1.0	1.8	-	22.1
T10	10	40°	4.5	2.5	2.0	3.5	-	47.6
AT5	5	50°	2.7	1.2	1.5	2.5	-	32.0
AT10	10	50°	4.5	2.5	2.0	5	-	58.6

Operating Temp: -20~80°C (Reference Value)
For the belt design data, see >>P.2253.

Belt Type	Pitch	Ra	Lr	H	h	i	PLD	Unit Mass g/m (Width: 10mm)
Belt Type	Pitch	Ra	Lr	H	h	i	PLD	Chloroprene Rubber	Polyurethane
S3M	3	1.95	1.95	2.10(2.00)	1.14	0.96(0.86)	0.381	-	24.3
S5M	5	3.25	3.25	3.61(3.20)	1.91(1.77)	1.70(1.43)	0.480	38.8	34.6
S8M	8	5.20	5.20	5.30(5.00)	3.05(2.85)	2.25(2.15)	0.686	55.2	57.6

Dimensions in ( ) are for Polyurethane.

Belt Type	Pitch	ℓ	H	h	PLD	r	Unit Mass g/m (Width: 10mm)
Belt Type	Pitch	ℓ	H	h	PLD	r	Chloroprene Rubber
P5M	5	3.25	3.6	1.81	0.571	0.5	41.0
P8M	8	5.2	5.5	2.9	0.686	0.8	56.0

Part Number			Number of Teeth Lower Limit ~ Upper Limit	Belt Width (mm)	Allowable Tension (N)		Applicable Metal Joint	Unit Price 1~30pc(s).
Type	Belt Type	Belt Nominal Width	Number of Teeth Lower Limit ~ Upper Limit	Belt Width (mm)	Chloroprene Rubber	Polyurethane	Applicable Metal Joint	Chloroprene Rubber	Polyurethane
TBOG (Chloroprene Rubber) TBO (Polyurethane)	XL	025	30~3937	6.4	-	66	TBCK-XL025	-
		037		9.5	47	102	TBCK-XL037
		050		12.7	70	142	TBCK-XL050
	L	050	30~2099	12.7	95	259	TBCK-L050
		075		19.1	165	387	TBCK-L075
		100		25.4	-	519	TBCK-L100	-
	H	075	45~1574	19.1	-	397	TBCK-H075	-
		100		25.4		529	TBCK-H100
		150		38.1	-	799	TBCK-H150	-
		200		50.8	-	1093	TBCK-H200	-
HTBOG (Chloroprene Rubber) HTBO (Polyurethane)	S3M	060	40~6666	6	-	127	TBCK-S3M060	-
		100		10	-	106	TBCS-S3M100	-
		150		15	-	159	TBCS-S3M150	-
	S5M	100	50~4000	10	310	215	TBCK-S5M100
		150		15	490	323	TBCK-S5M150
		250		25	-	539	TBCK-S5M250	-
	S8M	150	60~2500	15	-	647	TBCK-S8M150	-
		250		25	950	1176	TBCK-S8M250
		300		30	-	1412	TBCK-S8M300	-
		400		40	-	1882	TBCK-S8M400	-
PTBOG (Chloroprene Rubber)	P5M	100	50~4000	10	287	-	TBCK-S5M100		-
		150		15	456	-	TBCK-S5M150		-
		250		25	817	-	TBCK-S5M250		-
	P8M	150	60~2500	15	606	-	TBCK-S8M150		-
	P8M	250	60~2500	25	1060	-	TBCK-S8M250		-
TTBO (Polyurethane)	T5	100	40~4000	10	-	112	TBCK-T5100	-
		150		15	-	166	TBCK-T5150	-
		200		20	-	225	TBCK-T5200	-
		250		25	-	284	TBCK-T5250	-
	T10	150	40~2000	15	-	299	TBCK-T10150	-
		200		20	-	397	TBCK-T10200	-
		250		25	-	529	TBCK-T10250	-
		300		30	-	627	TBCK-T10300	-
		400		40	-	862	TBCK-T10400	-
		500		50	-	1064	TBCK-T10500	-
	AT5	100	40~4000	10	-	147	TBCK-AT5100	-
	AT5	150	40~4000	15	-	221	TBCK-AT5150	-
	AT10	150	40~2000	15	-	469	TBCK-AT10150	-
		200		20	-	625	TBCK-AT10200	-
		250		25	-	781	TBCK-AT10250	-

Overall Length: Number of Teeth x Pitch. kgf=Nx0.101972
For orders larger than indicated quantity, please request a quotation.

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Basic information

Belt shape	Open End	Belt tooth surface	Standard (Single Sided)	Transmission torque	Regular Torque Transmission

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Basic Attributes

Belt material
- Rubber Belt
- Polyurethane Belt
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Core Wire Material
- Glass Fiber
  - Glass Cord
- Steel Cord
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Belt Width (mm)(mm)
6

6.4

9.5

10

12.7

15

19.1

20

25

25.4

30

38.1

40

50

50.8
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Belt Width (Inch)(Inch)
0.25

0.37

0.5

0.75

1

1.5

2
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Belt-shaped type
- Trapezoidal Tooth Profile Circular Type
- Trapezoidal Tooth Profile Metric Type
- Round Tooth Profile Super Torque
- Circular Tooth Profile PX Belt
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Number of Teeth(Teeth)
[30-3937/1Teeth Unit(s)]
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Type
- HTBO
- HTBOG
- PTBOG
- TBO
- TBOG
- TTBO
Clear
Belt Type
- XL
- L
- H
- T5
- T10
- AT5
- AT10
- S3M
- S5M
- S8M
- P5M
- P8M
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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:
Where does the idler pulleys have to be placed on the timing belt?: Answer:
As a rule, the idler pulleys are positioned on the slack side, since the tension of the timing belt is here lowest during operation. Ideally, the timing belt is tensioned from the inside, because this prevents the timing belt from bending alternately. This is particularly recommended for timing belts with a steel tension cord. The idler pulley should always be larger than the smallest timing pulley of the belt drive system.
Question:
For what purpose can a timing belt with a round profile be used for?: Answer:
Round profile timing belts can be used in many applications. These are well suited for transmitting torque. In addition, the reverse play is very low due to the round profile shape with changing direction of rotation. The timing belts are also well suited for highly precise positioning. Timing belts with a round tooth profile can therefore often be found in 3D printers.
Question:
Can multiple belts be used for the transfer?: Answer:
A transmission can take place via one or more timing belts. If an equal distribution of the forces across the individual belts is not possible, it must be ensured that one belt alone can withstand the maximum load. In order to enable uniform distribution of forces, a precise adjustment is necessary. For this purpose, a toothed belt disc with clamping sleeve can be used, because it can be adjusted continuously and ensure uniform distribution.
Question:
Can a timing belt used for transmission?: Answer:
With timing belts, a gear ratio or reduction in a drive is possible. The gear ratio is established based on the number of teeth on the pulleys. It should be ensured that the minimum number of teeth of the timing pulley disc is not undercut.
Question:
What is the possible tensile stress for timing belts?: Answer:
The maximum allowable tension for MISUMI timing belts depends on the belt type, speed of rotation and belt pulley diameter. For more information, click on this link.
Question:
What is the minimum size of timing pulleys?: Answer:
The minimum size or the minimum number of teeth of a timing pulley depends on the belt type used and the height of the applied speed or rotation. You can find more detailed information about the minimum number of teeth of timing pulley discs in the selection of Timing Pulleys available as a PDF.
Question:
Does a timing belt stretch a lot?: Answer:
As opposed to a roller chain, the expansion is small. The length extension of timing belts is very stable. Therefore, it is not absolutely necessary to re-tension the timing belt during operation, as is necessary for chain drives. This makes the timing belt very easy to maintain compared to the chain. However, it should be ensured that the timing belt is free of oil, as the natural rubber could swell.
Question:
What is the purpose of a timing belt?: Answer:
The primary task of a timing belt is the synchronous and slip-free transmission of force or power. Depending on the task, various profile shapes are available for timing belts. These can be roughly divided into drive, conveying and positioning. In the following overview, you can view the various areas of use: Overview as PDF