NMT Ltd.
Corporate Communications Department
NMT Constant Section Thin Wall Bearings High Rigidity Precision Thin Section Bearings
As robot joint design evolves from basic rotation to precision motion, bearing selection has transcended mere support function to become a fundamental variable defining overall machine performance. Collaborative robots, medical manipulators and humanoid robots impose unprecedented demands for joint compactness, lightweight construction and high integration. Conventional bearing solutions struggle to satisfy all requirements—larger bore diameters demand thicker walls, multiplying volume and weight while consuming valuable space for cables, sensors and actuators.
Japan NMT offers a compelling answer: constant section thin wall bearings. Unlike ordinary bearings that trade increased wall thickness for load capacity, NMT’s constant section series maintains consistent inner and outer ring dimensions across an extremely thin cross-section. Whether applied to a robot wrist’s delicate joint or a large base slewing ring, the radial thickness remains uniform. Designers no longer compromise between fit and strength—from collaborative robot wrists under 50mm diameter to slewing bases exceeding 300mm, the same installation logic applies, dramatically simplifying structural layout while freeing valuable space for more compact reducers and actuators.
Reasons for selecting NMT constant section thin wall bearings:
Constant cross-section geometry regardless of bore size
Lightweight design significantly reduces rotational inertia, enhancing joint responsiveness
High rigidity reserves maintain sufficient deformation resistance even in thin-wall structures
Superior raceway precision and rolling element consistency deliver smooth, refined motion
Effective suppression of elastic deformation-induced precision drift ensures stable trajectory repeatability
Excellent temperature rise control minimizes clearance variation during prolonged continuous operation
Low noise and low vibration operation suits surgical robots, semiconductor inspection and other clean-environment applications
These merits establish NMT constant section thin wall bearings as the preferred choice for collaborative robots, industrial robots, medical manipulators and precision rotary equipment, perfectly matching demanding conditions of high precision, lightweight design and space constraints.
Application scenarios
Collaborative robot joints, six-axis industrial robot wrists and bases, surgical robot precision rotary units, semiconductor inspection equipment turntables, precision optical adjustment mechanisms, humanoid robot hip/ankle/wrist joints, laser cutting high-speed linkage mechanisms, micro-positioning modules for electronics assembly.
Precision manufacturing
Produced according to Japanese industrial standards, NMT constant section thin wall bearings adopt premium bearing steel subjected to carbonitriding heat treatment, multi-stage stabilization processing, superfinishing grinding, precise control of raceway roundness and roughness, rolling element consistency screening, low-noise lubrication, dynamic balance testing and comprehensive precision inspection—ensuring every product delivers constant section geometry, reliable accuracy and smooth operation.
Product range
Standard constant section thin wall bearings, ultra-thin precision bearings, high-rigidity reinforced thin wall bearings, low-noise silent bearings, high-speed thin wall bearings, corrosion-resistant stainless steel thin wall bearings and custom non-standard bearings.
Global industrial service
Japan NMT supplies high-quality constant section thin wall bearings to global robot manufacturers, automation equipment providers and precision instrument makers, empowering advanced global machinery with constant-section precision engineering and reliably stable performance.