 |
|
|
|
|
Belt Fabrication Tolerances
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
WIDTH
[mm] |
Tolerance [mm] |
|
|
£50 |
0.4 |
|
|
>50
and £300 |
0.8 |
|
|
>300 and £610 |
1.6 |
|
|
>610
and £1220 |
3.2 |
|
|
>1220 |
|
|
| belts | ||
|
LENGTHS
[mm] |
Tolerance
[mm] |
|
|
£300 |
1.6 |
|
|
>300 and £1,222 |
3.2 |
|
|
>1,220 and £2,540 |
5 |
|
|
>2,540
and £6,100 |
8 |
|
|
>6,100
and £15,250 |
13 |
|
|
>15,250 and £30,500 |
19 |
|
|
>30,500
and £61,000 |
38 |
|
|
>61,000 |
0.07% |
| b | ||
| Note: | Due to the humidity factor, an additional correction factor of ± 0.5% of the measured dimension is required for belts constructed of polyamide materials. | |
|
For belts made with cleats and guides, an additional 0.15% of the belt length must be allowed on the negative side of the overall tolerance. |
| Although the thickness tolerance for different products varies depending on the overall thickness, material composition and surface structure of a belt, tolerances for rubber covered nylon core belts can be held considerably tighter than leather covered products. Since leather is a natural product, it is more difficult to control the outcome of the end product's nominal thickness. Usually, leather covered flat power transmission belts vary in thickness no more than ±0.01in. for single sided leather belts, and ±0.015in. for double sided leather products. However, it does happen on rare occasion, that a leather covered product falls just outside this range and is not considered to be faulty. |
Go to the Top of this Page
|
