When selecting brakes for mine hoists, it is important to consider factors such as the depth of the shaft, the number of levels, stopping profile, drum design and payload in order to calculate the braking torque required for each application.
Twiflex produces braking systems for mine hoists and is part of the heavy-duty over-running clutch brake division of Altra Industrial Motion.
Twiflex product manager Steve Powell said: "Our election is based on providing enough braking torque to deal with the static out-of-balance load, in addition to considering the dynamic stopping duty. Modern control systems offer lower hoisting cycle times and high production levels, all of which affect the brake selection. The limitation for brake manufacturers is the friction material and the brake-pad swept area, which needs to be carefully chosen for the operating cycle."
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