V-belt Optibelt 21X6 870

OPTIBELT 21X6 870 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 870 and any equivalents.

The Optibelt 21X6 870 is a variable speed belt from the Vario Power series, with a length of 870 mm. It is used on drives where the pulley sheaves change diameter to vary speed. Before you fit a new belt, inspect the drive and sheaves so the replacement runs correctly.

Check the sheave faces for wear, scoring, or steps. Worn faces can pinch a new variable speed belt and cause it to run at the wrong width. Clean the grooves and confirm the sheaves move freely through their full range. Any binding or flat spots on the sheave faces should be addressed before the belt is fitted.

Align the pulleys and check the shaft bearings for play. A variable speed belt relies on correct alignment to run smoothly and transfer load without edge wear. If the old belt failed early, the sheaves or alignment are often the cause. Correct any misalignment before installing the Optibelt 21X6 870.

When you request a quote, send the part number 21X6 870 and the quantity you need. If you are unsure whether this is the right belt for your drive, include the belt marking and the sheave details. The team can help confirm the right belt or suggest an equivalent.