V-belt Optibelt 21X6 770

OPTIBELT 21X6 770 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 21X6 770 and any equivalents.

The Optibelt 21X6 770 is a variable speed belt from the Vario Power series, built for drives that require smooth, stepless ratio changes. It is identified by the code 21X6 770 and a length of 770 mm. This type of belt is used in variable speed drive systems, not in standard fixed-ratio V-belt drives.

Variable speed belts are commonly found on equipment where operating speed must change while the machine is running, such as woodworking machinery, textile equipment, and certain industrial transmission systems. The 21X6 770 is intended for these kinds of drives, where the belt runs between adjustable sheaves. Because the sheave position changes, the belt profile and length must match the drive exactly for proper contact and movement.

To confirm fit, check the existing belt marking on the back of the belt and compare it with the code 21X6 770. Measure the outside length only if the marking is unreadable, and verify that the length is 770 mm. Also inspect the sheave groove width and condition, as worn sheaves can affect belt performance. If you need help confirming that this is the correct belt for your drive, send the part number and any photos of the old belt to our team.

We carry the Optibelt 21X6 770 as part of our industrial belt range. When requesting a quote, include the part number, the quantity needed, and the drive details if you have them. Our team can help you confirm the right belt or suggest an equivalent from the data you provide.