... , speed reducer , Helical Bevel Gearbox , reducer, gear motor Product Description K Series Gear Speed Reducer, Used with Circular-conic Gear Translation ... -191, even as high as 13459 for the combination of K/R and average efficiency 94% 6. Output speed: 0.1 ... 7. Output tourque: Up to 50000Nm 8. Motor power: 0.18-200kw K Series Helical Bevel Gearbox