
V-belt Gates 3M 307 JB
- Brand
- GATES
- Category
- Power transmission
- Subcategory
- V-belts
- Series
- Polyflex JB
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
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
GATES 3M 307 JB 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 3M 307 JB and any equivalents.
The Gates Polyflex JB 3M 307 JB is a narrow V-belt with a 307 mm length. It is the belt to specify when replacing a worn or broken Polyflex JB drive belt on compact, high-speed drives. Confirm your old belt by its back marking and profile before you order.
The simplest way to match this belt is to read the old one. Look for the full code on the back of the belt, including the 3M profile and the 307 mm length. If the marking is worn away, measure the belt's outside length and compare it to the 307 mm figure. The Polyflex JB profile is narrow, so check that the replacement sits correctly in the pulley grooves.
When you request a quote, send the complete part number 3M 307 JB along with the drive details from the nameplate or the old belt. Our team replies promptly by WhatsApp or email and can confirm the Polyflex JB belt or suggest an equivalent. If you are replacing a set, include the quantity so all belts on the drive can be matched.
Inspect the pulleys and tensioner at the same time. Worn grooves or a weak tensioner will shorten the life of any new belt. Keep the old belt as a reference until the replacement is fitted and running correctly.
Dimensions
- Length
- 307mm
Frequently asked questions
- How do I confirm the 3M 307 JB is the right belt for my drive?
- Check the marking on the back of the belt you are replacing. It should show the 3M profile and the 307 mm length. If the marking is unreadable, measure the outside length and compare it to 307 mm.
- Can you help if my old belt is marked differently?
- Yes. Send the full part number from the old belt, or a photo of the marking, and our team will confirm the Polyflex JB belt or suggest an equivalent.
- What should I include when requesting a quote?
- Send the part number 3M 307 JB, the quantity you need, and any drive details from the nameplate. We reply promptly by WhatsApp or email.

