Performance requirements of the miniature roller bearing products

As a precision mechanical components, rolling bearing performance directly affects the host performance even of some of the key parts in a host of bearing performance, almost can determine the workability of the host. For example, used for precision optical coordinates the B3 - tapered roller bearing spindle on the bed And B3-706 707, it's radial run-out at 0. 01 - 0. 0025 mm, the axial runout reached 0. 002-0. 003mm。 It's in a very large extent, determines the spindle rotation accuracy, namely main performance index of the host. Besides the highly precise classification of bearing, like high temperature resistant, low temperature resistant, rust, vibration control, high speed and high vacuum and corrosion with special performance requirements of bearing quality indicators are also very strict, like rolling bearing should have high life, low noise, small rotating torque and high on the basic performance. To meet these requirements, it has to on mechanical processing technology to ensure the bearing parts of the following indicators: rotating accuracy: to various bearing parts geometry precision and position accuracy of no more than a few microns. Dimensional accuracy: requirements within a few microns in size precision of the parts. Surface roughness, surface roughness R installation. Value is not greater than zero. 63um、0. 32m; More demanding race, R. Value is less than 0. 16 m dimensional stability: in long-term storage and work, does not change the size and shape of the obvious. Rust resistance: parts are not allowed to rust. Bearing vibration and noise, vibration and noise is limited within a certain range, the requirements of bearing parts of various quality should be as high as possible. The residual magnetic: bearing the residual magnetic should be controlled in 0. 6吨,0。 8 under the mt.