V-belt Dayco BP81
- Brand
- DAYCO
- Category
- Power transmission
- Subcategory
- V-belts
- Section
- B
- Series
- Classical wrapped industrial belts
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Description
DAYCO BP81 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 BP81 and any equivalents.
The Dayco BP81 is a classical wrapped V-belt in the B profile, with a 2133.6 mm length. When you are replacing a belt on an existing drive, the marking on the old belt is the fastest way to confirm what you need. This page covers how to match the BP81 to the belt coming off the machine.
Start by reading the marking on the back of the belt being replaced. If it shows a B profile and a 2133.6 mm length, the Dayco BP81 is the same size. The profile is the cross-section: B denotes a top width of 17 mm and a height of 11 mm, with a 40 degree angle. Those dimensions must match the pulley groove, because a different profile will not sit correctly in the sheave.
Length is the second check. The 2133.6 mm figure is the belt length, and it needs to match the old belt so the drive keeps the correct center distance and tension. If the marking is worn or unreadable, measure the old belt and note the profile and length before ordering. Send the part number BP81, or the profile and length, and the team will confirm it against your request.
Inspect the drive while the belt is off. Check the sheaves for wear, alignment and any damage that could shorten belt life. On multi-belt drives, replace all belts in the set at the same time so the load stays evenly shared. If you are unsure whether the BP81 is the right match, send a photo of the old belt marking along with your quote request.
Dimensions
- Section
- B
- Length
- 2133.6mm
Frequently asked questions
- How do I confirm the Dayco BP81 fits my drive?
- Check the marking on the belt being replaced. It should show a B profile and a 2133.6 mm length. If it does, the BP81 is the matching size. You can also measure the old belt and compare the profile and length.
- What are the dimensions of the BP81?
- It has a B profile with a 17 mm top width, an 11 mm height and a 40 degree angle. The length is 2133.6 mm.
- What should I send to request a quote?
- Send the part number BP81, or the profile and length from the old belt. A photo of the back marking helps the team confirm the match before quoting.