V-belt Optibelt B 81
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- B
- Series
- VB / Red Power
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
GATES and OPTIBELT: matching part numbers →OPTIBELT and STARK: matching part numbers →
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Description
OPTIBELT B 81 belongs to v-belt, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for B 81 and any equivalents.
A worn belt often points to worn sheaves. The Optibelt B 81 in the VB / Red Power series is a classical V-belt with a B profile and a length of 2134 mm. Before you fit it, inspect the drive so the new belt runs true and lasts.
Check sheave grooves for wear, rust, or embedded debris. A groove that has widened or gone shiny will let a new belt sit too low, slip, and overheat. Measure groove wear against the sheave manufacturer's limits, and replace any sheave that is out of spec. Confirm the sheave alignment with a straightedge or laser so the belt does not run against the groove sidewalls.
Verify the drive takes a B profile belt: 17 mm top width, 11 mm height, 40-degree angle, 2134 mm length. The Optibelt B 81 is a classical V-belt in the VB / Red Power series. The same size is also listed under Stark B 81, which can help when you are matching what is on the drive now.
After fitting, recheck tension and re-tension after the first run-in period. Keep sheaves clean and free of oil or grease. If the drive runs multiple belts, replace them as a set so the load is shared evenly.
Dimensions
- Section
- B
- Length
- 2134mm
Frequently asked questions
- What should I check before installing an Optibelt B 81?
- Inspect sheave grooves for wear, rust, or debris, check alignment, and confirm the drive uses a B profile with a 2134 mm length.
- Can I replace just one belt on a multi-belt drive?
- On a multi-belt drive, replace all belts as a set so they share the load evenly and wear at the same rate.
- How do I request a quote for the Optibelt B 81?
- Send the part number Optibelt B 81 by WhatsApp or email. The team replies promptly and can confirm the belt or suggest an equivalent.