... toothed surface taper cylindrical gear reducer, 4, DCYK for three-level hard-toothed surface taper cylindrical gears hollow shaft ... gear, vibration and noise significantly reduced. (4) adopts many series, reduce speed, can pull a single stage center distance, reduce ... and vertical, even deflection Angle installation, convenient. (6) the series three level 4 combination model gear reducer (i. e. Level 3 ...