30*72*19mm B40-160 P4 Grade Deep Groove Ball Bearing for Servo Motors

B40-160 bearings are suitable for high-precision servo motors and are available in all-steel and hybrid ceramic ball bearing types to adapt to different servo motor models. Hybrid ceramic ball bearings mainly consist of steel rings and silicon nitride ceramic balls, while all-steel bearings mainly consist of inner and outer rings made of GCr15 bearing steel and steel balls. Commonly used in FANUC and Yaskawa high-speed servo motors, it can prevent motor shaft current from corroding the bearings. We have strict quality control to ensure that the product quality is excellent and safe and reliable.

The precision of the servo motor bearings complies with the latest standards of ISO 492:2023 and GB/T 307.1-2024, and is divided into five levels: P0, P6, P5, P4 and P2. The precision index gradually tightens as the level increases.P0 and P6 are general industrial-grade precision, mostly used in ordinary transmission equipment, and cannot meet the operating requirements of servo systems.Servo motors generally use P5 precision grade and P4 ultra-precision grade bearings, which can achieve ±0.01° angular deviation, ±0.005mm repeatability, millisecond-level dynamic response, and no crawling phenomenon at low speed.Compared to P6 grade bearings, its friction loss can be reduced by 20% to 30%. It is a core component for precision control in high-end equipment and directly affects the overall performance of the servo system.

Servo motor bearings, with their graded precision specifications, are suitable for a variety of industrial applications.For conventional automated equipment such as packaging machinery and ordinary conveyor production lines, basic precision bearings can be selected to ensure stable operation while reasonably controlling costs.Equipment such as CNC machine tools, 3D printers, and industrial robots have higher requirements for motion precision and response speed, so they are equipped with precision bearings to ensure accurate movements and smooth operation.In ultra-precision fields such as semiconductor equipment and high-end optical inspection instruments, top-precision bearings are selected to easily meet the stringent control requirements at the micron level