
Poly-V belt Optibelt PJ 381
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Poly-V belts
- Series
- RB
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
OPTIBELT PJ 381 belongs to poly-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 PJ 381 and any equivalents.
This page covers the Optibelt PJ 381 RB, a Poly-V (multi-rib) belt with a PJ profile and a length of 381 mm. It is the belt to reference when you need that exact profile and length for a drive. The same size is also listed under Gates as PJ 381.
To request a quote, send the part number PJ 381 and confirm the profile PJ and length 381 mm. If you are replacing a belt on an existing drive, include the marking from the back of the old belt and the quantity you need. Clear part numbers and quantities let the team reply promptly with the right belt or a suggested equivalent.
The Optibelt PJ 381 RB is a Poly-V (multi-rib) belt, often called a serpentine belt in US plants. Match both the profile and the length: a PJ profile belt with a 381 mm length is not interchangeable with a different profile or length. If your drive runs more than one belt, note how many are in the set so the replacement can be handled as a set.
When you inspect the drive before ordering, check pulley grooves for wear or debris and confirm the belt routing. The same size is also listed under Gates as PJ 381, so you can compare what is on the machine. Send the details by WhatsApp or email and the team will help confirm the right belt or suggest an equivalent.
Dimensions
- Profile
- PJ
- Length
- 381mm
Frequently asked questions
- What do I need to send for a quote on the Optibelt PJ 381 RB?
- Send the part number PJ 381, the profile PJ, the length 381 mm, and the quantity. If you have the old belt, include the marking from the back of it.
- Can you help confirm this is the right belt for my drive?
- Yes. Share the part number and the marking from the old belt. The team can help confirm the right belt or suggest an equivalent.
- Is the same size listed under another brand?
- Yes. The same size is also listed under Gates as PJ 381.

