Definition: A caster brake is a mechanical device that restricts wheel rotation, swivel rotation, or both to prevent unintended movement.
Purpose: Improve safety, positioning accuracy, and operational control.
Common caster brake types
| Brake type | Function |
|---|---|
| Total lock | Locks both wheel rotation and swivel |
| Directional lock | Locks swivel only, allows straight-line travel |
| Wheel brake | Locks wheel rotation only |
| Face contact brake | Presses against wheel tread |
| Side brake | Engages from the side of the wheel |
Performance differences
- Total locks: Best for stationary positioning and safety
- Directional locks: Improve tracking in long, straight runs
- Wheel-only brakes: Allow swivel drift under load
- Face contact brakes: Provide stronger holding force
Reality: A wheel brake alone does not prevent swivel movement or drift.
Selection guidance
- Use total locks for workstations and carts that must stay fixed
- Use directional locks for long travel paths
- Verify brake holding force under full load
- Consider ergonomics of brake engagement and release
Brake performance should be validated in real operating conditions.
Common engineering mistakes
- Assuming all brakes stop swivel movement
- Ignoring brake effectiveness under full load
- Specifying brakes without considering operator access
- Using light-duty brakes in high-load applications
Rule: If movement is unacceptable, specify total lock brakes.
FAQs
Does a brake increase load rating?
No. Brakes do not increase structural load capacity.
Are total lock brakes always required?
No, but they are recommended when stability is critical.
Do brakes wear out?
Yes. Brake components wear and should be inspected regularly.
Can brakes be retrofitted?
Sometimes, but compatibility depends on caster design.