A mechanical linkage that bypasses the primary hydraulic or pneumatic braking system to apply stopping force directly. It typically uses a ratcheting lever, cable, or screw mechanism to lock the brake shoes or pads against a drum or rotor. Operators rely on it to secure parked machinery or as a failsafe if the main brakes fail.
Heard on the job
Make sure you pull the handbrake before you crawl under the chassis.
Insider tip
On heavy machinery, never use the handbrake to stop a moving load unless it is an absolute emergency, as it will glaze the pads instantly.
Also heard as
- parking brake
- emergency brake
- e-brake