V-belt Optibelt B 128
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- B
- Series
- VB / Red Power
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Other brands for this category
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GATES and OPTIBELT: matching part numbers →MITSUBOSHI and OPTIBELT: matching part numbers →
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Description
OPTIBELT B 128 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 128 and any equivalents.
The Optibelt B 128 is a classical V-belt in the VB / Red Power series. Its profile and length are the two dimensions that matter most when you are selecting a replacement or specifying a new drive. The B profile gives a 17 mm top width and 11 mm height, and the belt is 3327 mm long.
The 40° angle is the standard V-belt flank angle for this profile. If you are replacing an existing belt, read the marking on the back of the old belt and compare it with the profile and length above. A B-profile belt will not seat correctly in a drive cut for a different profile, so confirm the profile before ordering.
The same size is also listed under Mitsuboshi B 128. If your drive uses more than one belt, inspect all belts in the set for wear and tension, and replace them as a set when any belt shows damage. Send the part number, the profile and the length from the old belt when you request a quote.
Dimensions
- Section
- B
- Length
- 3327mm
Frequently asked questions
- What do the profile and length tell me about this belt?
- The B profile is a classical V-belt cross-section with a 17 mm top width and 11 mm height. The length is 3327 mm. Together they determine whether the belt fits the pulley grooves and the center distance of your drive.
- How do I confirm this is the right belt for my drive?
- Check the marking on the back of the belt you are replacing and match the profile and length. If the marking is unreadable, measure the top width and the outside length and compare them with 17 mm and 3327 mm.
- What should I send to get a quote?
- Send the part number B 128, the brand Optibelt, and the profile and length from the belt or the drive documentation. If you have the old belt, a photo of the back marking helps confirm the correct item.