Axle Savvy
Axle Savvy is the QuickAxle resource hub for trailer axle guides, calculators, measurement help, fit-up information, and part-identification resources.
Start with a measurement guide, use a calculator, or review technical information to help identify the correct axle, suspension, brake, hub, drum, wheel-end, or related part before ordering.
Guides and Tools
How to Measure Your Axle
Use this guide to gather the axle measurements and identifying information needed for axle replacement or review. It covers hub face, spring center, axle tag information, tube diameter, bolt pattern, brake type, and alternate measuring methods.
- Best starting point if you are identifying an axle.
- Useful for light-duty trailer axle measurement help.
- Includes guidance for missing tags, bent axles, and replacement measurements.
Heavy Duty Air Brake Trailer Axle Calculator
Use this calculator to estimate heavy-duty air brake trailer axle fit-up information, including overall tire width, inside tire width, beam capacity, friction material brake capacity, calculated axle rating, and limiting factor.
- Best for heavy-duty air brake trailer axle review.
- Uses wheel, tire, beam, suspension, and brake inputs.
- Includes an email button to send calculated axle specs to QuickAxle.
How to Use Axle Savvy
- Start with the measurement guide if you are still trying to identify an axle or gather replacement dimensions.
- Use the calculator if you already know the axle is a heavy-duty air brake trailer axle and have enough wheel, tire, beam, and brake information.
- Send photos if unsure when the axle tag, brake type, bolt pattern, tube size, wheel offset, or suspension details are unclear.
Need Help Identifying an Axle or Part?
If you are not sure which guide or calculator to use, contact QuickAxle with photos and the information you have. Helpful photos include the axle tag, hub face area, spring seats, brake assemblies, wheel/tire labels, suspension, and any stamped or printed part numbers.
Contact QuickAxleFuture Axle Savvy Resources
This page will continue to expand as QuickAxle adds more technical guides, calculators, and part-identification resources.
Axle Identification
- How to read an axle tag
- How to identify axle capacity
- How to measure hub face and spring center
- How to identify straight, drop, and torsion axles
Wheel-End and Brake Help
- How to measure bolt pattern
- How to identify hubs and drums
- How to identify bearings and seals
- How to identify air brake components
Fit-Up and Parts Support
- Suspension part identification
- Air brake trailer axle fit-up help
- Cross-reference support
- QuickShip axle and part resources