
Timing belt Optibelt 25 T20 / 4000 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 25 T20 / 4000 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 T20 / 4000 AFX and any equivalents.
The Optibelt 25 T20 / 4000 AFX is an Alpha Flex timing belt with a T20 profile, a 4000 mm length and a 20 mm pitch. When you are replacing a belt, the marking on the back is the fastest way to confirm what you need.
Start by reading the old belt. Look for the part number, profile and length printed on the back. The replacement should match the T20 profile and the 4000 mm length shown here. If the old marking is worn or unreadable, measure the length along the belt and confirm the profile before ordering.
Send the part number, profile and length when you request a quote. If you are unsure, include a photo of the marking on the old belt. We carry the Optibelt 25 T20 / 4000 AFX and can help confirm it is the right belt for your drive.
Inspect the drive while the belt is off. Check the pulleys for wear, alignment and debris. A new belt on worn pulleys will not last. If the drive uses more than one belt, replace them as a set so the load is shared evenly.
Dimensions
- Profile
- T20
- Pitch
- 20mm
- Length
- 4000mm
Frequently asked questions
- How do I confirm the Optibelt 25 T20 / 4000 AFX is the right belt?
- Check the marking on the back of the belt you are replacing. It should show the same part number or at least the T20 profile and 4000 mm length. If the marking is not clear, send a photo with your quote request.
- What information should I send with my quote request?
- Send the part number 25 T20 / 4000 AFX, or the profile and length from the old belt. If you have the old belt, a photo of the back marking helps us confirm the match.
- Should I replace more than one belt at the same time?
- If your drive uses multiple belts, replace them as a set. This keeps the load shared evenly and helps avoid mismatched wear.

