Friction clutch and brake HEVC

drummechanical

Airflex constricting clutches and brakes are the go-to solutions for heavy duty applications. Available in four different series spanning a range of sizes and features, you’ll find the perfect fit for grinding mills, marine propulsion, drill rigs, and much more.​ Long life - Rugged tire-like constricting tube​ Even wear - Force applied uniformly at optimum radius​ Many options - Wide torque capacity range How constricting elements work​ Airflex constricting drum clutch and brake elements use a rugged, tire-like neoprene and cord tube that expands radially inward when pressurized. The expansion forces the friction surface against a cylindrical drum to create torque.​ Force applied at maximum radius from axis​ Instead of the reduced radius that occurs in plate clutches, constricting drum clutches concentrate the frictional force on the outside drum diameter to achieve maximum torque. The drum radius acts as the torque lever arm to generate and apply force uniformly around the drum circumference.​ ​Features and benefits Uniform contact velocity​ In Airflex constricting drum clutches and brakes, friction shoe contact occurs across the cylindrical surface of the drum where the contact velocity is constant. This means Airflex constricting elements will have more consistent and lower rates of wear over plate-type clutches where the contact velocity varies across the friction plate face. ​ As friction surfaces wear, the tube simply expands farther, reducing the need for maintenance but not torque capacity.​ As friction surfaces wear, the tube simply expands farther as needed. Normal wear does not reduce torque capacity, but does reduce maintenance requirements.​