Bearing installation accuracy

A way to improve bearing accuracy

A factory trial refined instruments, spindle 6202 / P2-type bearings and its precision self-lubricating composite bushings still can not meet the requirements, after the thick neck and roll over the shaft sleeve made on its way to replace the inner ring, and the steel The ball for waxy measurement, to the size of a group of three, each group of steel taken nearly 120 ° intervals come, due to the addition of a heavy processing surface, but also added a heavy mating surface, while improving the shaft bearing system Of the stiffness, and the largest three copper-based self-lubricating plate particles and the smallest three ball close equidistant dissemination, but also improve the shaft rotation accuracy, so to meet the accuracy requirements of the instrument.

2 precision to improve the law

Bearing installed in the host after the end, such as measuring the radial runout of the spindle, you can find each measured value has a certain change; continuous measurement, you can find that after a certain number of revolutions, the change will be approximately repeated appear. The measure of the extent of this change is the rotation accuracy of the loop. The number of revolutions required for the change to repeat approximately represents the "quasi-period" of the rotation accuracy of the circle, and the amplitude of the magnitude of the change in the quasi-period is large, .

Appropriate pre-load on the spindle, the speed gradually decreased to near-duty speed, the implementation of the bearing "run-in" role, can improve the spindle rotation accuracy.

Hunan Jintai Hardware and Machinery Co.,Ltd. is a professional manufacturer on various kind of bearings over 15 years China factory.
We are making all kinds of slide bearings including DU PTFE composit bushing, DX POM composite bushing,bimetal bushing,wrapped bronze bushing, cast sliding bushings and wear plate bearing pad, sintered bronze bushing and sintering parts, ball transfer bearings, etc.
The shapes of bearings can be in sleeve, flanged, spherical, plate, washer, pad, ring, square etc.
Base materials in carbon steel, harden steel, iron, stainless steel, bronze, brass, copper, bronze-steel alloy.Lubricant materials in PTFE, teflon, POM, nylon, plastic, oil, graphite, grease, MoS2, etc.
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