The correct installation of the bearing


The correct installation of bearings affects the accura […]

The correct installation of bearings affects the accuracy, life, and performance. Therefore, the design and assembly department should fully study the installation of bearings. You want to install according to the operating standards. The standard of work is usually as follows:
(1) Cleaning bearings and bearing related parts
(2) Check the dimensions and finishing of connected parts
(3) Installation
(4) Inspection after installation of bearings
(5) Supply of lubricant
I hope to open the bearing package just before installation. General grease lubrication, do not clean, directly filled with grease. Lubricating oil is lubricated. Normally it does not need to be cleaned. However, bearings used in instruments or high speeds should be cleaned with clean oil and the rust inhibitor applied to the bearing should be removed. The rust-removing bearing is removed and it is easy to rust, so it cannot be left unattended. In addition, bearings that have been sealed with grease are used without cleaning.
The bearing installation method varies depending on the bearing structure, fit, and conditions. In general, the inner ring needs an interference fit because many shafts rotate. Cylindrical bore bearings, multi-press press, or hot pack method. For tapered holes, mount directly on the taper shaft or install with a sleeve.
When it is mounted to the housing, generally there is more clearance fit and the outer ring has an amount of interference. Usually, it is press-fitted with a press, or there is also a shrink-fitting method that is installed after cooling. When dry ice is used as a cooling agent, the moisture in the air will condense on the surface of the bearing. Therefore, proper rust prevention measures are needed.