Roller Bearing installation
Whether the bearing is installed correctly affects the precision, life and performance.Therefore, the design and assembly department should fully study the installation of bearings. You want to install according to the job criteria.The standard operating items are usually as follows:
(1) cleaning of bearing and bearing connection parts;
(2) check the size and precision of the connected parts;
(4) inspection after installing the bearing;
(5) provide lubricants.
It is hoped that the bearing package will not be opened until the installation is imminent.General grease lubrication, do not clean, directly fill the grease. Lubricants lubricated, also do not need to cleaned commonly. But high speed bearing using in equipment should be cleaned with clean oil and remove the anti rust coating on the bearing. The bearing without the anti rust agent is easy to rust, so can not be placed. In addition, bearings sealed with grease are not cleaned for direct use.
The method of bearing installation varies with bearing structure, fit and conditions.Generally, the inner ring needs to be over-filled due to the rotation of the shaft. Cylindrical bore bearings always need to press in or use heat installation method. For tapered holes, install directly on the taper shaft or sleeve installation.
When it is installed into the shell, there is usually more clearance fit. The outer ring is overfilled, it is usually pressed by the press, or there is a method of cold shrinkage fit after cooling. Using dry ice as a coolant, the moisture in the air will condense on the surface of the bearing when it is cooled and fitted.Therefore, appropriate anti-rust measures are needed.
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