Can vulcanized belts be made in custom, non-standard lengths?
Short answer: vulcanized flat belts and transmission belts can be made to almost any required length — as a truly endless loop produced in custom lengths, or as open-end strip that is joined (vulcanized) into a loop of the exact size you need. Standard production covers a wide range of widths and pitch lengths, and non-standard lengths are routine for a manufacturer with in-house vulcanizing equipment; the practical limits are transport length for endless-molded belts and joint quality for joined loops.
Two ways to get your exact length
Endless molded
Cured as one continuous loop in a mold. Uniform strength, no joint — best for high-speed drives. Length follows the mold range available for your section and width.
Open end + vulcanized joint
Strip cut to your exact length, then the two ends are vulcanized into a closed loop. Nearly unlimited length freedom, including very long conveyors and retrofit sizes.
Custom width too
Along with length, belt width can typically be customized in small increments from the base slab range — useful for matching worn OEM parts.
On-site joining
For very long installations, open-end strip can be shipped in sections and vulcanized at your site, avoiding oversize freight for a huge loop.
How to specify your length correctly
- Measure the existing belt exactly: total pitch length (inside or outside circumference, state which), width and thickness — or the center distance and pulley diameters so we can calculate it.
- State the joint type you expect (endless, or vulcanized splice) and the duty — speed, load, direction of rotation.
- Mention the environment (temperature, oil, dust, moisture) so the compound matches the length choice.
- If replacing an OEM part, send the original part number as a cross-reference along with your measurements.
Typical tolerances and practical limits
| Item | Typical practice |
|---|---|
| Length tolerance, cut-to-size strip | Commonly within a few mm per meter; tighter on request for precision drives |
| Width steps | Usually customizable in fine increments from the production slab range |
| Very long belts | Open-end strip joined in sections; joints reduce continuous strength slightly |
| Endless molded | Limited to available mold sizes for the section and width |
Need a non-standard belt length?
Send the measured length, width and thickness (or pulley data), plus your application — we will confirm the best construction and quote a custom-length vulcanized belt.
Get a Custom-Length Quote
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