Timing belt Optibelt 400 / H 3620 AFX

OPTIBELT 400 / H 3620 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 400 / H 3620 AFX and any equivalents.

The Optibelt 400 / H 3620 AFX is an Alpha Flex timing belt with an H profile and a length of 9194.8 mm. It is a synchronous belt, so the teeth carry the load rather than friction, and the drive has to be in condition before the belt goes on. Check the sheaves and the rest of the drive first, then fit.

Start with the sheaves. Look at the tooth flanks for wear, rounding or impact damage, and check the grooves for foreign material, corrosion or burrs that will chew a new belt. Confirm the sheaves are aligned and that the shafts and bearings turn freely by hand. A worn or misaligned sheave will shorten the life of any timing belt, including this one.

Check the rest of the drive while you have it open. Look at the tensioner and idler pulleys for play, roughness or a worn surface, and inspect the structure for cracks or loose fasteners. Confirm the belt path is clear and that nothing rubs or fouls. On a long belt like this 9194.8 mm H-profile unit, small alignment errors add up over the run.

When you are ready to order, send the part number 400 / H 3620 AFX and the quantity you need. If you are matching a belt that is already on the machine, send the marking from the back of the old belt and a photo of the drive, and the team can confirm the profile and length before quoting.