KM Series Hypoid Gearboxes




1. Housing: Aluminium Alloy (KM050~KM090)
Gray Cast Iron (KM110)
2. Gears: Helical & Hypoid Bevel Gear Set, 20CrMnTi Steel, Carburizing & Nitriding, 0.3-0.6mm remaining carburized layer after precise grinding
Gears Hardness: 58-62 HRC
3. Input Configurations:
Equipped with Electric Motors (AC Motor, Brake Motor, DC Motor, Servo Motor)
Hollow Shaft Input with IEC Flange (B5/B14)
Open Shaft Input with NEMA Flange
Available Shaft Input with Servo Motor Flange
Solid Shaft Input
4. Output Configurations:
Keyed Hollow Shaft Output
Hollow Shaft with Output Flange
Plug-in Solid Shaft Output
5. Spare Parts:
Output Shaft, Output Flange, Torque Arm, Dust Cover
6. Gearbox Painting:
Aluminium Alloy Gearbox:
After Shot Blasting, Anticorrosion Treatment and Phosphating, Paint with the Color of RAL5010 Blue or RAL7035 Silver Gray




1. Rated Power:0.12KW~5.5KW
2. Output Speed:4.6~187rpm
3. Nominal Ratio:7.5~300
4. Max. Torque:130~750N.m
5. Shaft Positions: Right Angle
6. Housing: Aluminium Alloy or Cast Iron


1. 2-stage or 3-stage helical & hypoid bevel gear set, large reduction ratio
2. Hardened gears, higher gear hardness, and strength than RV series worm gears. Wearable and long service life
3. Energy efficient. The efficiency is more than 90%. About 10%~40% efficiency difference compared with RV series worm gearbox
4. Modular design, various combinations
5. Mounting dimensions are compatible with RV series (Except KM050 and RV050)
6. High-efficiency KM series can replace RV series in wide applications


Models Transmission Stage Nominal Ratio Output Speed (n2)* Max. Torque Input Shaft Dia. Output Hole Dia. Output Shaft Dia.
KM050 3 Stage 50~300 4.8~27 130N.m Φ11 Φ20, Φ25 Φ25
2 Stage 7.5~60 24~181 130N.m Φ11
KM063 3 Stage 50~300 4.6~27 200N.m Φ11 Φ25, Φ28 Φ25
2 Stage 7.5~60 23~184 200N.m Φ14
KM075 3 Stage 50~300 4.7~28 350N.m Φ14 Φ28, Φ30, Φ35 Φ28
2 Stage 7.5~60 24~187 350N.m Φ16
KM090 3 Stage 50~300 4.7~28 500N.m Φ14 Φ35, Φ38 Φ35
2 Stage 7.5~60 24~187 500N.m Φ19
KM110 3 Stage 50~300 4.7~27 750N.m Φ19 Φ40, Φ42 Φ42
2 Stage 7.5~60 24~187 750N.m Φ24

*Input Speed: n1=1400r/min
3 Stage Ratio: 300, 250, 200, 150, 125, 100, 75, 60, 50
2 Stage Ratio: 60, 50, 40, 30, 25, 20, 15, 12.5, 10, 7.5


Foot Mounted
Flange Mounted


Grease Lubrication
Oil-bath and Splash Lubrication


Natural Cooling