The brake drum coupling is used to connect the motor and gearbox shaft or gearbox and machine shaft. • The brake is fitted on the brake drum and thus, it serves dual purpose of being a coupling and brake drum.

Gear brake drum couplings, also known as curved tooth couplings, consist of a hub and a casing. Each hub has gear teeth cut around the outside diameter, with the hub connecting to a casing with pairing gear teeth cut into the inner diameter. Gear brake drum couplings transmit torque and accommodate some misalignment through their gear teeth. The gear brake drum couplings are often used in applications with requirements of high torque and balance, and due to their high torque capacity they are ideal for demanding applications.