Timing belt Optibelt 3M 612 (HTD)

OPTIBELT 3M 612 (HTD) 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 3M 612 (HTD) and any equivalents.

This Optibelt Omega timing belt is identified by the code 3M 612 (HTD). It uses the HTD 3M profile with a 3 mm pitch and a 612 mm length. It is a synchronous belt intended for drives where tooth engagement, not friction, carries the load.

HTD timing belts are common on drives that need to keep two shafts turning together: pumps, compressors, small conveyors, packaging and labeling equipment, machine tool axes, and similar industrial mechanisms. The HTD tooth form is a curvilinear profile, so it seats in the matching pulley grooves and is often chosen where a standard trapezoidal timing belt would be marginal.

To confirm this belt fits your drive, read the marking on the back of the old belt and match the profile and length. Check that the pulleys are HTD 3M with a 3 mm pitch and that the belt width and tooth count suit the application. Inspect the sprockets for worn teeth, the flanges for damage, and the tensioner for free movement before installing a replacement.

If the marking is unreadable, measure the belt length and count the teeth, or send us a photo of the belt and the pulley. We can help confirm the right belt or suggest an equivalent. Send the part number 3M 612 (HTD) by WhatsApp or email and we will reply promptly with a quote.