N1000 Series

Core Technical Advantages

• High Radial Load Capacity: The line contact between the cylindrical rollers and the raceways enables these bearings to support much higher radial forces compared to ball bearings of similar dimensions.
• Axial Displacement Capability: As N-type bearings, the ribless outer ring allows the shaft to move freely relative to the housing, accommodating thermal expansion without inducing internal axial stress.
• High-Speed Performance: Low-friction roller-end geometry and specialized cage designs (available in brass or reinforced polymer) reduce centrifugal forces and heat buildup at high RPMs.
• Precision Tolerance Standards: Manufactured according to P6 or P5 precision classes (ISO standards) to minimize vibration and ensure rotational accuracy.

Application Scenarios

• Electric Motors: Used at the non-locating end of large and medium-sized motors to accommodate rotor expansion.
• Machine Tool Spindles: Provides radial rigidity and high-speed stability for precision milling and grinding equipment.
• Gearboxes and Transmissions: Manages radial loads in heavy-duty industrial reducers where axial movement is required.
• Railway Axles: Found in traction motors and axle boxes due to their resistance to impact and heavy loading.

Installation and Maintenance Guidelines

Handling and Storage Conditions

Bearings must be stored in their original, unopened packaging in a temperature-controlled environment with a relative humidity not exceeding 60%. Avoid direct contact with the floor and keep away from heat sources or chemical vapors to prevent oxidation of the anti-rust coating.

Mounting Precautions

Use induction heaters for shrink-fitting to ensure uniform expansion. Do not apply direct hammer blows to the rings, as this may cause "brinelling" (permanent indentations) on the raceways. Ensure the shaft and housing bores are cleaned and checked for roundness and dimensional tolerance before assembly.

Lubrication Management

Select lubricants based on the operating temperature and DN factor (mean diameter multiplied by RPM). Over-greasing can lead to churning and excessive operating temperatures; typically, the free space in the bearing should be filled between 30% and 50% for standard applications.