
Timing belt Optibelt 100 AT20 / 12000 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
OPTIBELT 100 AT20 / 12000 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 100 AT20 / 12000 AFX and any equivalents.
This Optibelt Alpha Flex belt is a timing belt in the AT20 profile with a 12000 mm length and a 20 mm pitch. It is built for long, wide synchronous drives where the belt runs over toothed pulleys and position has to stay tied to the pulley rotation.
Long AT20 timing belts of this length are common on large, slow-turning drives rather than on compact equipment. Typical uses include gantry and linear motion systems, wide conveyor and indexing drives, and other machinery where a single belt spans a long center distance and carries load across a broad face. The AT20 profile and 20 mm pitch suit pulleys machined to the same tooth form, so the belt and the pulleys have to be specified as a pair.
To confirm fit, read the marking on the back of the old belt and compare it with the code 100 AT20 / 12000 AFX. Check the profile and the 20 mm pitch against the pulley teeth, and check the 12000 mm length against the drive layout, including any take-up or tensioning range. Also confirm the belt width matches the pulley face before ordering.
Send the belt marking, the profile, the 12000 mm length and the 20 mm pitch by WhatsApp or email and we will quote the Optibelt 100 AT20 / 12000 AFX. If the marking is worn off, send photos of the belt and the pulleys with the drive dimensions so the belt can be identified.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 12000mm
Frequently asked questions
- How do I confirm this is the right belt for my drive?
- Compare the marking on the back of the old belt with the code 100 AT20 / 12000 AFX, then check the AT20 profile and 20 mm pitch against the pulley teeth and the 12000 mm length against the drive. The belt width must also match the pulley face.
- What information do I need to send for a quote?
- Send the belt marking or the code 100 AT20 / 12000 AFX, along with the profile, the 12000 mm length and the 20 mm pitch. Photos of the belt and pulleys help if the marking is no longer readable.
- What kind of drives use an AT20 timing belt at this length?
- Long AT20 timing belts are used on large, slow-turning synchronous drives such as gantry and linear motion systems, wide conveyor and indexing drives, and other machinery where one belt spans a long center distance.

