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How to install angular contact ball bearings correctly

wallpapers Resource 2020-05-21

How to install angular contact ball bearings correctly

The installation of high precision angular contact ball bearing can only be used after reasonable adjustment of clearance. It should be pre-tightened between the bearings after installation. Generally, the manufacturers of the three big factories can provide the assembly bearing or the universal assembly bearing to the supporting users. The high precision angular contact ball bearing is well installed, which can make the rotating precision and life of the spindle meet the technological requirements. Otherwise, the rotation precision can not meet the requirements, resulting in the bearing can not be used, to other parts of the damage.

The mounting form of bearing assembly includes back to back, face to face and series arrangement.

Bearing mounting method
1. Clean the environment, bearings, main engine, operators and tools;
2. Improve the anti-rust measures of the bearing, and it is forbidden to touch the bearing with bare hands;
3. Use appropriate tools or special tools and operate cautiously;
4. Apply force evenly, symmetrically and stably to avoid direct impact on bearing end face;
5. Avoid passing through the scroll;
6, the operator must be trained, have bearing installation skills.

Bearing operation inspection

After the installation of the bearing is completed, operation inspection shall be carried out in order to check whether the installation is correct.
Small machines can be rotated by hand to ensure smooth rotation. Check items due to foreign bodies, scars, indentation caused by poor operation, due to poor installation, installation seat machining and torque instability, due to small clearance, installation errors, seal friction caused by too much torque, etc. If there is no abnormality, power operation can be started.
Large machinery can not be manually rotated, so the power will be cut off immediately after starting without load, and the machinery will be idling. Check whether there is any vibration, noise, rotating parts have contact, etc., and enter the power operation after confirming that there is no abnormality.
Power operation, from the low speed of no-load, slowly increase to the rated operation of the conditions set. During the test run, check whether there is abnormal sound, bearing temperature change, lubricant leakage or discoloration, etc. If found abnormal, should immediately stop operation, check the machinery, if necessary to remove the bearing inspection.
Empty running test at working speed, time no less than 2h, temperature rise should not exceed 15℃.

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