Timing belt Optibelt 50 T20 / 4200 AFX

OPTIBELT 50 T20 / 4200 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 50 T20 / 4200 AFX and any equivalents.

The Optibelt 50 T20 / 4200 AFX is an Alpha Flex timing belt with a T20 profile, a 4200 mm length and a 20 mm pitch. When you are replacing a belt on a driven machine, the most reliable approach is to match the markings on the belt you are removing to this part number before you order.

Start by reading the back of the old belt. Confirm that the profile reads T20 and that the length reads 4200 mm, and check that the pitch is stated as 20 mm. If the old belt carries the same Optibelt 50 T20 / 4200 AFX marking, this is the correct replacement. If the marking is worn or unreadable, measure the belt and compare the profile and length to the figures above.

A timing belt is selected by profile, pitch and length, not by the machine alone. The T20 profile and 20 mm pitch determine how the teeth engage the pulleys, while the 4200 mm length sets the center distance. A belt with the same length but a different profile will not seat correctly, and a belt with the same profile but a different length will not tension properly.

If you are unsure whether this belt matches the one you are replacing, send a photo of the old belt's back marking along with the machine make and model. We carry the Optibelt 50 T20 / 4200 AFX and can confirm the part number or suggest an equivalent based on the profile, pitch and length.