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Bearing installation, removal methods, should be based on the nature of the bearing structure, size, and bearing components with. Installation, disassembly pressure should be directly added to the stalls circle in a tight fit on the end face, can not pass through the rolling pressure, because this will cause the indentation in the bearing surface, affect the bearing to work properly, even make nsk bearings damage. Cage bearings, seals, dust cover and other parts are easily deformed, installing or removing the bearing pressure can not be applied in these parts.
(1) of the bearing inner ring and the shaft is a tight fit, the outer ring and the housing as a more loose fit, available presses the bearing press-fitted in the bearing on the shaft is then loaded into the housing together with the bearing together, when press-fitted in the The end surface of the bearing pad assembly sleeve of a soft metallic material (copper or soft steel). The assembly casing diameter should be slightly larger than the journal diameter, outer diameter should be less than the diameter of the bearing inner diameter wall, in order to avoid pressure in the cage. A large number of installed bearings plus a handle on the sleeve.
timken bearings installed to make the bearing bore and shaft centerline coincidence. The bearing relative skew axis is not only difficult to install, but will also cause the indentation, journal bending even make the bearing inner ring fracture.
Missing or can not use the press, you can install the bearing assembly casing and the Hammers. Hammering force should be uniformly spread to the entire circumference of the end face of the bearing rings, and therefore the assembly casing by hammering the end should be made spherical.
(2) the bearing outer ring and the housing bore as a tight fit the inner ring and the shaft as compared to a loose fit, the bearing is pressed into the housing, this time assembled the outside diameter of the sleeve should be slightly less than the diameter of the housing bore.
(3) the bearing inner ring and the shaft, the outer ring and the housing hole are a tight fit, assembly casing face should be made both compression ring bearing inner ring face, or a disc and assembly casing so The pressure at the same time spread to the inner and outer rings, the bearings are pressed into the shaft and housing. This installation method is particularly suitable for the installation of the self-aligning radial spherical bearing.
(4) heating installation, install the bearing force bearing size and cooperated with the size of the interference, the larger the amount of interference in large bearings commonly used thermal loading. Bearing rings bearing or separable hot charging into the fuel tank or dedicated heater evenly heated to 80 ~ 100 ℃ (should not exceed 100 ° C).
Hot charging ina bearings require skilled operation skills. When a bearing is removed from the heating tank heater, you should immediately with a clean cloth (not with cotton yarn) to wipe the surface of the bearing traces of oil and attachments, and then placed in front of the mating surfaces in one operation bearing push position to withstand the shaft shoulder. During the cooling process should always be pushed tight, or assembly casing with a hammer by tapping the bearing so that it abuts. The installation should be slightly rotating bearing to prevent to install tilt or stuck.
The bearing outer ring and shell holes for a tight fit into the bearing housing is heated. Especially light metal manufacturing the bearing seat in the case of a tight-fitting, may be provided due to the bearing outer ring pressed into and damage the mating surfaces, when the bearing housing should be heated.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7913CTYNDBLP4 NSK | 65 | 90 | 13 |
| 7912A5TYNDBLP4 NSK | 60 | 85 | 13 |