
Timing belt Optibelt 25 AT5K6 / 3800 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 25 AT5K6 / 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 25 AT5K6 / 3800 AFX and any equivalents.
This Optibelt Alpha Flex timing belt is identified by the code 25 AT5K6 / 3800 AFX. It uses an AT5 profile with a 5 mm pitch and a 3800 mm length. The belt is suited to synchronous drive applications where exact positioning and speed matching are required.
To confirm fit, compare the markings on your existing belt with the code above. The AT5 profile and 5 mm pitch must match the pulleys, and the 3800 mm length must match the drive layout. If the old belt is worn or the marking is unreadable, measure the pitch and length or send photos of the belt and pulleys for review.
This timing belt is typically found on industrial machinery, automation equipment, and other drives that need precise synchronization. It is not a V-belt or a serpentine belt, so it cannot be interchanged with those types. When replacing a timing belt, inspect the pulleys for wear and check the tensioner and idler bearings before installing the new belt.
Dimensions
- Profile
- AT5
- Pitch
- 5mm
- Length
- 3800mm
Frequently asked questions
- What does the code 25 AT5K6 / 3800 AFX mean?
- The code identifies this as an Optibelt Alpha Flex timing belt with an AT5 profile, a 5 mm pitch, and a 3800 mm length. The full code should match the marking on your old belt.
- Can I use this belt on a V-belt drive?
- No. This is a timing belt with an AT5 profile. It is designed for synchronous pulleys, not for V-belt or multi-rib drives.
- How do I request a quote for this belt?
- Send the part number 25 AT5K6 / 3800 AFX by WhatsApp or email. If you are unsure, include photos of the old belt and the drive pulleys so we can help confirm the correct item.

