Usually, cylindrical holes NTN bearings are mainly used for press installation method or with pressed into the hot charging method, however, cone hole NTN import bearings is installed directly to the taper shaft, or the use of sleeve installation method.

First, cylindrical holes NTN bearing installation

Cylindrical holes NTN bearing the installation of a cylindrical holes NTN main bearing installed and hot charging method two methods, they all have their own range and advantage.

1, the method of pressed by the press

Small NTN bearing widely used the method of pressed by the press. The pad is cushion inside circle, with press pressure to inner ring and quietly close contacts shaft block shoulder so far. Will approach the outer pad is installed inside the turn, is rolling pressure caused by faith the mark, the crushed reason, so want to be absolutely prohibited.

Installation operation, the best in the face with oil. In must use hammer of installation occasion, circles on cushions, pad is work. This kind of practice is often become NTN bearing operation reason, so limited to use surplus quantity of small, can not be used in a large surplus quantity, or medium, large NTN bearing.

Such as deep groove ball bearing separation and NTN type NTN bearing, inner ring and outer ring all need a surplus quantity of the occasion of installation, use spacers pad, with screw or hydraulic, inner ring and outer ring will be pressed into at the same time. Self-aligning ball NTN bearing outer ring is apt to tilt over, even if not with interference, also had better fitted pad to install. NTN cylindrical roller bearing, tapered roller bearing and NTN the separation of NTN bearing type, can be in outer ring, respectively to axis and the housing installed, will be separately installed inner ring and outer ring when combined, the key is firmly shut them, so as to make both the center does not produce deviation, and barely pressure caused by the rolling pavement card injury.

2, the use of hot charging method

Large NTN bearing, the fashionable need a great deal of power, so it is difficult to pressure into. In the oil will NTN bearing heating, make inflation, then loaded on the shaft to hot charging method widely used. This method can be used not to increase the force bearing improper NTN, in a short time, the assignment.

NTN bearing heating temperature to NTN bearing, required size of surplus quantity for reference. Hot outfit work the attention the following three points:

1, do not heat  NTN bearing to 120 ℃ above; heating NTN bearing to a high temperature more than required 20 ℃-30 ℃, to operate not happen in the inner circle becomes cold, hard to installation;

2, to make NTN bearing not direct contact with grease groove bottom, best consideration will NTN bearing on the metal nets on the stage, or will NTN bearing hung;

3 after installed, stay NTN bearing cooled down, the width of the direction of contraction, so use a shaft nut or other appropriate methods to tighten, in case the inner ring and NTN bearing block shoulder produce clearence.

Second, cone hole NTN bearing installation method

Cone hole NTN bearing is directly will ring in fixed on tapered shaft, or use tight set, remove the sleeve installation to cylinder shaft. Large self-aligning NTN bearing multi-purpose hydraulic installation.

 



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