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What is Timing Belt? Specification Chart

When you are talking about belt, its a part of machine used for different reasons and performing different tasks. Synchronous belt or Timing or Cogged or toothed belt is used everywhere. Even in CD rooms, Car Engine, Treadmill, Printers, and many others.

What is Timing Belt?

Timing or toothed or cog belt is a rubberized (rubber composite & polyurethane) material belt with teeth or tooth in inner side and also outsides. Toothed or Timing Belts are used to transfer and transmit power from one machinery part to another one. As per teeth on belt, there are more than hundred different types of timing belts. Hundreds even Thousands of machinery & engines uses timing belt because of their good performance. Some timing belts are made with steel wires like Gates GT2 Timing Belt, Opti T10 & Brecoflex T5.

Birth of Timing or Toothed belt

Bill Devin American racing driver, entrepreneur & Devin Enterprises founder used first timing belt in 1945. He build a custom car engine with Norton Manx cylinders & heads & toothed belt driving cam shaft of each Norton Cylinder head.

Make of Timing or Toothed Belt

Companies design this belt with high tensile Kevlar / Twaron or fibers to maintain rpm and transmit proper energy from driving shaft to drive shaft. These threads are molded in pre-designed die to make a right tooth height, thickness, design and strength. Belts are manufactured with Natural rubber, PU & Neoprene.

Timing Belt Specifications

Type
Pitch
Tooth Height
Belt Thickness
MXL
2.03
0.51
1.14
XXL
3.18
0.76
1.52
XL
5.08
1.27
2.30
L
9.53
1.91
3.60
H
12.70
2.29
4.30
XH
22.23
6.35
11.20
XXH
31.75
9.35
15.70
T2.5
2.50
0.70
1.30
T5
5.00
1.20
2.20
T10
10.00
2.50
4.50
T20
20.00
5.00
8.00
AT5
5.00
1.20
2.70
AT10
10.00
2.50
5.00
AT20
20.00
5.00
8.00
3M
3.00
2.40
1.17
5M
5.00
3.80
2.06
8M
8.00
6.00
3.40
14M
12.00
10.00
6.00
S2M
2.00
1.36
0.76
S3M
3.00
1.93
1.14
S4.5M
4.50
2.70
1.71
S5M
5.00
3.41
0.19
S8M
8.00
5.30
3.05
S14M
14.00
10.20
5.30
ZA
9.53
4.10
1.91
ZAS
9.53
4.62
2.32
ZB
9.53
4.50
2.29
ZBS
9.53
5.08
2.76
MY
8.00
5.21
3.06
MR
9.53
5.55
3.40
S8M
8.00
5.30
2.95
Y(MY)
9.53
1.91
5.21
R(MR)
8.00
3.11
5.69
YU
9.53
3.54
5.20
ZBS
9.53
2.80
5.10
FS8M
8.00
3.05
5.30
RU
9.53
3.56
5.70
RPP
9.53
2.25
4.50
ZAS
9.53
2.32
4.63
ZR
9.53
3.20
5.40
RHD
9.53
3.50
5.70
ZB
9.53
2.29
4.50
SL
9.53
3.40
5.50
RHX
9.53
2.62
4.80

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