Internal Drum Shoe Brake Design Equations

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Internal Drum Shoe Brake Design Equations

A drum brake is a brake that uses friction caused by a set of shoes or pads that press against a rotating drum-shaped part called a brake drum.

The term drum brake usually means a brake in which shoes press on the inner surface of the drum. When shoes press on the outside of the drum, it is usually called a clasp brake. Where the drum is pinched between two shoes, similar to a conventional disc brake, it is sometimes called a pinch drum brake, though such brakes are relatively rare. A related type called a band brake uses a flexible belt or "band" wrapping around the outside of a drum.

This type is used on vehicles and has two shoes, lined with friction material, which make contact with the inside surface of a hollow drum.

Open: Advanced Disk and Shoe Brake Design Calculator

Torque for left-hand shoe:

Torque right-hand shoe:

Total torque:

T = TL + TR

With K as Previously determined.

Maximum pressure:

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