AX31 Cogged V-Belt — Dayco AX31GL

The AX31 is a raw-edge cogged A-profile belt. Dayco's official online table publishes AX31GL with a 31-inch inside length and an approximate 33-inch datum length.

Cross-Reference Information

Wrapped Dimensional Alternative

A31 is the related wrapped classical A designation. It is not identical construction. Raw-edge cogged AX belts generally offer greater flexibility and improved cooling, so verify the drive rating and minimum sheave requirements before changing construction.

Common Symptoms

• Belt slips, chirps or runs hot
• Cracks develop between the cogs
• Driven fan, pump or compressor loses speed
• Belt is glazed, frayed or missing cog material

Check Before Replacing

• Confirm the AX profile—not a wrapped A or fractional-horsepower 4L belt
• Confirm the 31-inch inside-length designation
• Inspect sheaves, alignment and bearings
• Check whether the equipment permits a raw-edge cogged belt

Installation Notes

1. Disconnect and lock out electrical power.
2. Release tension according to the service manual.
3. Install without prying the belt over the pulley.
4. Align the sheaves and tension to specification.
5. Rotate by hand, reinstall guards and test operation.

Verified Compatible Equipment Models

No official model-level fitment was verified for this universal AX size. Dayco and Gates publish AX belts for broad fan, lathe, grinder, compressor, pump and industrial-drive applications. Match by the exact AX designation and drive specifications.