... mechanism for KC120 200M DP Air Compressor Mines Crawler Drilling Machine 1. Low gravity, ground clearance achieved great, make ... for KC120 200M DP Air Compressor Mines Crawler Drilling Machine 1. Propulsion reducer worm-gear, worm transmission, big push pull, and ... be arbitrarily regulate according to need.2. Rotary gear reducer, using the planet round transmission, speed, low torque force. By ...