NMT Ltd.
Corporate Communications Department
Precision Transmission, Power to Spare: NMT Bearings for Robot Joint Reducers
In the world of industrial robotics, the "muscle" is the motor, but the "joint" is the reducer. This is where speed is converted into torque. The bearings inside these reducers face some of the most extreme stress conditions in automation: high contact pressure, oscillating motion, and heavy shock loads. NMT’s Reducer-Specific Bearings are built to dominate these conditions.
Mastering Shock Loads with Cross-Roller Technology
For the output stage of a robot joint, rigidity is king. NMT’s High-Rigidity Cross-Roller Bearings feature a structure where cylindrical rollers are cross-arranged. This design provides a large contact area, allowing the bearing to sustain heavy moment loads and shock loads—such as when a robot arm slams on the brakes at high speed—without deformation. This ensures the robot maintains its path accuracy even under dynamic stress.
Solutions for Harmonic and RV Reducers
Different robots use different reducers.
For Harmonic Drives: NMT supplies specialized thin-wall cup bearings that flex reliably millions of times without fatigue failure.
For RV Reducers: Our needle roller bearings and support bearings are precision-ground to ensure smooth meshing of the gears, reducing vibration and noise.
Zero Backlash for Repeatability
A robot must return to the exact same coordinate every single time. NMT reducers bearings are manufactured with ultra-precise tolerances. By strictly controlling the radial clearance and preload, we ensure Zero Backlash. This eliminates "play" in the joint, guaranteeing that the robot’s movement is crisp, direct, and perfectly repeatable—a requirement for welding, assembly, and machining.