Where does the
spacer work?
A spacer that is too short or too long changes bearing preload, so each position carries its own length tolerance.
Wheel axles
The spacer sits between bearing races or against the hub. Its length and end-face flatness set the bearing stack, so the wheel runs without play or drag.
Folding joints
Spacers at the fold pivots keep the frame members a fixed distance apart. A snug bore stops the joint from rattling as the frame folds and unfolds.
Brake mechanisms
Spacers locate the brake parts along the pivot pin. A consistent length keeps the brake engagement the same from one chair to the next.
Replacement and service
Spacers corrode or go missing in service. A sample or the axle stack lets us match length and bore for a replacement.
Choose the fit and
length first.
Do not select a spacer from the word “stainless” alone. Length, bore fit, and end-face condition decide how the wheel runs.
Axle stack length
Set the length from the bearing, hub, and axle drawing, not from a nominal axle size. Measure between the faces that touch the bearing races.
Length follows the stackBore fit and concentricity
A snug bore keeps the spacer centered on the axle. Tight concentricity between bore and outside diameter keeps the wheel from running out.
Fit follows the axle tolerance304 or 316L
304 suits indoor and dry service. 316L is the better choice for outdoor use, rain, and chloride exposure such as road salt.
Grade follows the environmentCorrosion, deformation, and dimensional drift each need their own check.
Material, length, and fit each decide how long the axle stays quiet.
| Condition | What to review before specifying |
|---|---|
| Corrosion at the axle | Carbon steel spacers rust and can seize on the axle in wet service. Stainless keeps them removable, but confirm the grade against your exposure. |
| Deformation under load | Aluminum spacers can deform under clamp load and change the bearing stack. Check the wall thickness and the material against the load. |
| Inconsistent length | Spacers of uneven length change bearing preload from wheel to wheel. Specify the length and its tolerance as a critical dimension. |
| Wrong spacer for the stack | A spacer that is narrower than the hub space leaves play, and one that is wider can overload the bearings. Match it to the actual hub and bearing stack. |
| Dissimilar metals in wet service | Stainless next to dissimilar metals on a wet axle can drive galvanic corrosion. Use matching stainless fasteners where the design allows. |
Tell us where
the spacer sits.
The most useful enquiry contains the real stack and environment around the spacer, not only a nominal bore size.
- ApplicationWheel axle, folding joint, brake mechanism, or other
- StackBearing model, hub width, and the full stack length
- BoreAxle or pin diameter and the clearance you need
- Outside diameterContact diameter at the bearing race or hub
- ToleranceLength, concentricity, and end-face flatness that are critical
- EnvironmentIndoor, outdoor, rain, road salt, or cleaning chemicals
- Material304, 316L, or another stainless grade
- DocumentsDrawing, sample or worn part, quantity, and required finish
Field result: less maintenance.
A mobility equipment manufacturer moved its axle, folding joint, and brake spacers to stainless steel. The customer reported better structural stability and less maintenance afterward.
Before you
place the order.
Use these questions to turn an application description into an engineering review.
Why does spacer length matter on a wheel axle?
The spacer sits in the bearing stack. If it is too short the wheel has play, and if it is too long it can preload the bearings and wear them out. We match the length to your hub and bearing drawing.
Which grade suits a wheelchair?
304 works for indoor and dry use. For outdoor use, rain, and road salt, 316L holds up better. Tell us where the chair is used and we will confirm the grade.
Can you replace an existing wheelchair spacer?
Yes, from a sample, a drawing, or the measured axle stack. Send the worn part, or the bearing model, hub width, and axle diameter, and we will confirm length and bore before quoting.
What should I send for a wheelchair axle spacer?
Send the axle diameter, bearing model, hub width, and the length tolerance that matters. Add the environment and quantity, and we will size the spacer to match.