
Timing belt Optibelt SL 380 AT3 / 816
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Torque
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Description
OPTIBELT SL 380 AT3 / 816 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 SL 380 AT3 / 816 and any equivalents.
The Optibelt SL 380 AT3 / 816 is a timing belt in the Alpha Torque series. It uses the AT3 profile with a 3 mm pitch and an 816 mm length. This belt suits drives where synchronous motion and precise positioning are required.
Timing belts like this one are common on drives that must stay in step, such as positioning axes, small conveyors, and light industrial equipment. The AT3 profile and 3 mm pitch identify the tooth geometry and spacing, while the 816 mm length sets the belt's path around the pulleys.
To confirm fit, read the marking on the back of the existing belt and compare the profile, pitch, and length to this Optibelt SL 380 AT3 / 816. Check the pulley teeth for wear and make sure the belt sits correctly in the grooves. If the old belt is damaged or the drive has been rebuilt, verify the pulley alignment and tension before ordering.
When you request a quote, send the part number SL 380 AT3 / 816 and the quantity you need. If you are unsure of the exact replacement, include a photo of the belt marking and the pulley dimensions so we can help confirm the right belt.
Dimensions
- Profile
- AT3
- Pitch
- 3mm
- Length
- 816mm
Frequently asked questions
- What does the AT3 profile mean on this belt?
- AT3 is the profile designation for the tooth shape. The pitch is 3 mm, which is the distance between tooth centers. The length is 816 mm.
- How can I confirm this belt fits my drive?
- Compare the profile, pitch, and length to the marking on your old belt. Also check that the pulley grooves match the AT3 profile and that the belt length suits the drive layout.
- What information should I send with my quote request?
- Send the part number SL 380 AT3 / 816 and the quantity. If you are replacing an unmarked belt, include the pulley tooth count and center distance so we can help identify the correct belt.

