QDD-3N spring engaged air caliper disc brake

QDD-N type horizontal type pneumatic brake is large braking torque friction type spring enaged brake, it is looks like air engaged caliper disc brake QDD type. There are two models of it: QDD-2N, QDD-3N. This QDD-N model brake is spring engaged, that is to say, when there is no air input, brake is braked for stopping, after inputting air pressure, two friction pads will release, braking in releasing.

This friction type brake can be work for high speed rotating clamp, so friction pads will be worn for continous usage. One piece of new friction pad thickness is 11mm, the max total worn of two pieces of friction pads is 12mm.

This type of QQD-N brake is controlled by springs, so braking force is controlled by springs quantity. As usually, it is 8 pieces of springs, if you want to reduce braking force, the spring quantity can be reduce to six pieces as need.

On the other hand, for this structure and technical data table, we will know that QDD-3N braking force is nearly twice of QDD-2N. For example, when braking disc diameter is 300mm. QDD-2 braking force is 600N.m, while QDD-3 produce braking power is 1200N.m. Max braking torque of QDD-2N is 1700N.m, QDD-3N is 3300N.m.

Each brake produce and package are strictly in our factory, to make sure each product with superior quality.