Timing belt Optibelt 75 AT5 / 4400 AFX

OPTIBELT 75 AT5 / 4400 AFX belongs to timing 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 75 AT5 / 4400 AFX and any equivalents.

The Optibelt 75 AT5 / 4400 AFX is an Alpha Flex timing belt with an AT5 profile and a 4400 mm length. It is a synchronous belt built for drives where the pulley grooves and belt teeth must mesh precisely. Before you fit it, inspect the drive and sheaves so the new belt runs true.

Start with the sheaves. Check the tooth flanks for wear, the grooves for debris, and the flanges for damage. A worn or dirty pulley will shorten the life of any timing belt, including this Optibelt Alpha Flex. Confirm the pulley profile matches AT5 and that the belt sits fully in the grooves without riding high or bottoming out.

Next, check alignment and tension. Misalignment between pulleys will pull the belt to one side and wear the edges. The drive should be free of play in the bearings and the structure should be rigid. Set tension according to your drive requirements, then recheck after the first run-in period.

The 75 AT5 / 4400 AFX has a 5 mm pitch and a 4400 mm length. When you request a quote, send the part number and the quantity you need. If you are replacing a belt on a drive that has been modified or if the marking is worn, our team can help confirm the correct belt.