SD120AR0 High Precision 440C Stainless Steel Bearings

The key performance of AISI 440C stainless steel thin section bearings depends on bearing precision. Precision classes are defined in accordance with ISO standards, with P5 and P4 representing established precision grades for this series. Bearing precision is mainly determined by raceway grinding quality, geometrical tolerances and surface waviness, which directly affect radial and axial runout. A higher precision class can effectively reduce vibration and running torque, and help minimize accuracy drift during long-term operation. During manufacturing, raceway dimensional deviations are strictly controlled to achieve micron-level rotational accuracy. The appropriate precision class should be selected according to the actual rotational accuracy and positioning requirements of the equipment.

Our main products include high-precision hybrid ceramic ball bearings, ultra-thin wall bearings, servo motor bearings, high-precision stainless steel bearings, vacuum pump bearings, magnetic levitation bearings, thin-walled crossed roller bearings, reactor bearings, all-ceramic bearings, food and beverage bearings, new energy vehicle bearings, excavator bearings, and construction machinery bearings. We also support custom-made bearings to meet the requirements of various complex working conditions.