
V-belt Optibelt B 131
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- B
- Series
- VB / Red Power
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Description
OPTIBELT B 131 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 131 and any equivalents.
The Optibelt VB Red Power B 131 is a classical V-belt with a B profile and a length of 3404 mm. It is used in industrial drives where a standard B-section belt is specified. To match it to the belt being replaced, compare the profile and length on the old belt's back.
Start by reading the marking on the back of the belt you are replacing. You are looking for the profile letter and the length number. This belt is profile B with a length of 3404 mm. Its top width is 17 mm, its height is 11 mm, and its angle is 40 degrees. If those values match the old belt, the B 131 is the correct size.
If the marking is worn off, measure the old belt's top width and outside length, or check the drive's documentation for the required B-section belt. The B 131 is a classical V-belt, not a narrow wedge belt, so confirm the sheave groove is cut for a classical B profile. When you have the profile and length confirmed, send the part number for a quote.
Dimensions
- Section
- B
- Length
- 3404mm
Frequently asked questions
- How do I confirm the Optibelt VB Red Power B 131 is the right replacement?
- Read the marking on the back of the old belt. Confirm the profile is B and the length is 3404 mm. The B 131 also has a top width of 17 mm, a height of 11 mm, and a 40-degree angle. If these match, it is the correct size.
- What should I send to request a quote for this belt?
- Send the part number B 131, or the full description Optibelt VB Red Power B 131. If you are unsure, include the marking from the old belt or the profile and length from the drive documentation.
- Can you help if the old belt marking is unreadable?
- Yes. Send the drive details and any measurements you can take from the old belt, such as top width and outside length. The team can help confirm the right B-section belt.

