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SKF imported bearings are disassembled and the environment is clarified
Source: Bearing network time: 2018-06-11
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SKF imported bearing equipment must be carried out under boring and hygienic environmental conditions. Before the device, carefully check the cooperation appearance of the shaft and the outer casing, the end face of the shoulder, the groove and the processing quality of the joint appearance. It is necessary to carefully observe all the joint appearances. Remove and remove burrs; it is necessary to remove the sand from the unprocessed appearance of the casting.
Before the SKF imported bearing device, it should be cleaned with gasoline or kerosene; it should be used after boring; and it should be excellent and smooth; SKF imported bearings are usually made of smooth grease; oil can also be used smoothly. When the grease is smooth, it should be free of impurities and anti-oxidation. Smooth grease with excellent function such as anti-rust and extreme pressure. Smooth grease filling capacity is 30%-60% of SKF imported bearing and SKF imported bearing box volume; not too much. Double row tapered roller SKF imported bearing with sealing layout And SKF imported bearings with pump shafts have been filled with smooth grease; users can use them directly; no more cleaning.
When SKF imports bearing device; it is necessary to apply equal pressure on the circumference of the end face of the ferrule; press the ferrule; do not directly hit the SKF bearing end face with the number one thing; avoid damage to the SKF imported bearing. Under the condition; the sleeve can be pressed against the end face of the SKF bearing ring at normal temperature; the sleeve is struck by the head; the ring is evenly pressed through the sleeve. If it is a large-scale device; the hydraulic machine can be used. Time; the outer ring end face and the outer shoulder end face of the outer casing should be ensured; the inner ring end face and the end face of the shaft shoulder are pressed tightly; no gap is allowed.
When the interference is large; you can use the oil bath heating or induction heating SKF imported bearing method to install; the heating temperature scale is 80 °C-100 °C; the maximum can not exceed 120 °C. Together; use nuts or other appropriate methods Solid SKF imported bearings; to avoid the SKF imported bearings after cooling, the width direction is shortened and the gap between the ferrule and the shoulder.
The single-row tapered roller SKF bearing bearing device should finally adjust the clearance. The clearance value should be determined in detail according to the different working conditions and the cooperative interference amount. If necessary, the experimental determination should be made. Double-row tapered roller Sub-SKF imported bearings and pump shafts with SKF bearings have been adjusted for clearance at the factory; no adjustment is required for the unit.
After the SKF imported bearing device, the rotation test should be carried out; the first is used for the rotating shaft or the SKF imported bearing box; if there is no abnormality, the power will be used for no-load and low-speed operation; then the rotation speed and load will be gradually increased according to the working condition; and the noise will be detected. Oscillation and temperature rise; found abnormal; should stop the operation and check. After the operation experiment is normal, it can be delivered.
Second, the opening of SKF imported bearings:
SKF imported bearings are intended to be used continuously; they should be properly disassembled. Disassemble the ferrules of the interference cooperation; only pull the tension on the ferrule; never allow the detachment force to be transmitted through the tumbling body; Otherwise the roll and raceway will be crushed.
Third, the application environment of SKF imported bearings:
According to the application site, operating conditions and environmental conditions, the standard scale and precision are selected. The SKF imported bearings are suitable for ensuring the life and reliability of SKF bearings.
1. Application: Tapered roller SKF bearings are suitable for accepting radial and axial combined loads with radial loads; usually used with two sets of SKF bearings; the first should be the front and rear wheels of the car, automatic cone Gears, differentials, reducers and other transmission parts.
2, promise speed: in the correct, smooth and outstanding environment; promised SKF imported bearings limit speed of 0. 3-0. 5 times. Under normal conditions; 0. 2 times the limit speed is the most suitable.
3, promised slanting angle: tapered roller SKF imported bearings usually do not allow the shaft to be skewed relative to the housing hole; if there is skew; the maximum does not exceed 2'.
4, promise temperature: in the normal load; and the smoothing agent has high temperature resistance; and smooth and plentiful conditions; usually SKF imported bearings promise to operate at -30 ° C -150 ° C ambient temperature.
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