
Timing belt Optibelt 100 AT20 / 3800 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 / 3800 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 / 3800 AFX and any equivalents.
Replacing a timing belt starts with matching the belt on the drive. This Optibelt Alpha Flex belt is identified by the code 100 AT20 / 3800 AFX, with an AT20 profile and a 3800 mm length. Use the marking on the old belt to confirm the profile and length before you order.
Check the back of the belt being replaced and read the full marking. The profile must be AT20 and the length must be 3800 mm. The pitch on this belt is 20 mm. If the old marking is worn or unreadable, measure the belt and count the teeth so the profile and length can be confirmed.
This is a timing belt, also called a synchronous belt. It is part of the Optibelt Alpha Flex series. When you send your request, include the code 100 AT20 / 3800 AFX along with the machine or drive details. That lets our team confirm the belt matches what you are replacing.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 3800mm
Frequently asked questions
- How do I match this belt to the one I am replacing?
- Find the marking on the back of the old belt. Confirm the profile is AT20 and the length is 3800 mm. If the marking is not clear, send us the belt code and drive details so we can help confirm the match.
- What information should I send for a quote?
- Send the part number 100 AT20 / 3800 AFX, the quantity, and any details from the old belt or the drive. You can reach us by WhatsApp or email, and we will reply promptly.
- Can you help if I am not sure about the profile or length?
- Yes. Send the belt code, photos of the old belt, and the drive details. We will check the AT20 profile and 3800 mm length against your request and suggest an equivalent if needed.

