
Timing belt Optibelt 50 AT20 / 11800 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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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 50 AT20 / 11800 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 AT20 / 11800 AFX and any equivalents.
The Optibelt 50 AT20 / 11800 AFX is an Alpha Flex timing belt with an AT20 profile, a 11800 mm length and a 20 mm pitch. When you are replacing a belt on a large drive, the marking on the back of the old belt is the fastest way to confirm you are ordering the same size. We carry this belt and quote by part number.
To match it to the belt being replaced, read the full code from the back of the old belt. You are looking for the profile, the length and the pitch: AT20, 11800 mm and 20 mm. If the old belt is worn or the marking is unreadable, measure the length along the belt and check the tooth profile against the pulley grooves. The 50 in the code identifies the width; confirm that dimension as well before ordering.
Because this is a long belt, check the drive for worn pulleys, damaged flanges or misalignment that could have caused the original belt to fail. Install the new belt without forcing it over the flanges, and set tension according to the drive manufacturer's procedure. If you are replacing more than one belt on the same drive, order them together so they run as a matched set.
Send us the part number 50 AT20 / 11800 AFX by WhatsApp or email to request a quote. If you only have the old belt, send photos of the back marking and the tooth profile, along with the pulley dimensions, and we will help confirm the right belt.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 11800mm
Frequently asked questions
- How do I confirm this is the correct belt for my drive?
- Compare the code on the back of your old belt with the profile, length and pitch of this belt: AT20, 11800 mm and 20 mm. If the old marking is unreadable, measure the belt length and check the tooth profile against your pulleys.
- What information should I send with my quote request?
- Send the part number 50 AT20 / 11800 AFX, or photos of the old belt's back marking and tooth profile. If you have the pulley dimensions or the drive model, include those as well so we can help confirm the match.
- Can you help if I am not sure about the width?
- Yes. The 50 in the part number identifies the width. If you measure the width of the old belt and send that dimension, we can check it against this belt.

