
Timing belt Optibelt 25 AT20 / 3600 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 25 AT20 / 3600 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 25 AT20 / 3600 AFX and any equivalents.
When you need to match a timing belt, the marking on the back of the old belt is the most reliable starting point. This page covers the Optibelt 25 AT20 / 3600 AFX from the Alpha Flex series, an AT20 profile timing belt with a 3600 mm length. Use the marking to confirm the part number before requesting a quote.
The Optibelt 25 AT20 / 3600 AFX is a timing belt with an AT20 profile and a 3600 mm length. The pitch is 20 mm. These three details are the core of the marking: profile, length and part number. If the back of your belt reads 25 AT20 / 3600 AFX, this is the belt to quote.
A worn or faded marking can make the number hard to read. Check the full string, including any prefix or suffix, and note the profile and length separately. If the belt is damaged or the print is gone, measure the length and confirm the profile from the pulley grooves. Send us the complete marking or those measurements, and we will help confirm the right belt.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 3600mm
Frequently asked questions
- How do I read the marking on the back of the belt?
- Look for the full part number, such as 25 AT20 / 3600 AFX. The profile is AT20 and the length is 3600 mm. The pitch is 20 mm. Write down the entire string exactly as printed.
- What should I send to request a quote?
- Send the complete part number from the belt marking, or the profile and length if the number is unreadable. A photo of the marking can also help us confirm the belt.
- Can you help if the marking is worn off?
- Yes. If the marking is unreadable, measure the belt length and identify the profile from the pulley grooves. Provide those details and we will help match the belt.

