Timing belt Optibelt AT3 399
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Power
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Description
OPTIBELT AT3 399 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 AT3 399 and any equivalents.
The Optibelt AT3 399 is a timing belt from the Alpha Power series with an AT3 profile, a 399 mm length and a 3 mm pitch. Before you fit a new belt, inspect the drive and the sheaves it runs on. This page covers what to check and how to request a quote for the AT3 399.
A new timing belt will not correct a worn or misaligned drive. Check the sheaves for tooth wear, chips, corrosion or debris in the grooves, and confirm that the flanges are not bent or rubbing. Look for oil, coolant or dust that can shorten belt life, and verify that the shafts and bearings turn freely without play or noise. If the old belt shows uneven wear, the cause is usually in the drive rather than the belt.
The AT3 399 is identified by its profile and length: AT3 profile, 399 mm length and 3 mm pitch. When you request a quote, send the part number exactly as marked on the back of the belt, along with the quantity and any drive details you have. If you are replacing a belt on a drive that runs more than one belt, plan to replace the set together so the load stays even.
Dimensions
- Profile
- AT3
- Pitch
- 3mm
- Length
- 399mm
Frequently asked questions
- What do I need to send to get a quote for the Optibelt AT3 399?
- Send the part number AT3 399, the quantity you need, and any details from the drive or the old belt. You can send this by WhatsApp or email, and the team will reply promptly to confirm the belt or suggest an equivalent.
- How is the AT3 399 identified?
- It is identified by its profile and length: AT3 profile, 399 mm length and 3 mm pitch. Use these values along with the part number when checking the belt against your drive.
- Should I check the sheaves before fitting a new AT3 399?
- Yes. Inspect the sheaves for wear, damage or debris, and confirm alignment and free rotation before fitting a new belt. A worn drive can damage a new belt even if the belt itself is correct.