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KOYO bearing device environment and opening the door
Source: China Bearing Network Time: 2013-02-02
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According to the application site, operating conditions and environmental conditions, the standard scale and accuracy are selected; the suitable bearing is the condition for ensuring the life and reliability of KOYO bearing.
1. Application parts: Tapered roller bearings are suitable for accepting combined radial and axial loads with radial loads; usually used with two sets of KOYO bearings; the first should be the front and rear wheels of the car, the automatic bevel gear, the difference Speed, speed reducer and other transmission parts.
2, promise speed: in the correct, smooth and outstanding environment; promised KOYO bearing limit speed of 0. 3-0. 5 times. Normally under normal conditions; with 0.2 times the limit speed is the most suitable.
3, promised slanting angle: Tapered roller 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, the allowable temperature: in the normal load; and the smoothing agent has high temperature resistance; and smooth and plentiful conditions; usually KOYO bearings promise to work at -30 ° C -150 ° C ambient temperature.
Second, the KOYO bearing device:
The KOYO bearing device 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 remove all the cooperation and appearance. And remove the burr; it is necessary to remove the sand from the unprocessed appearance of the casting.
KOYO bearing device should be cleaned with gasoline or kerosene before use; use after boring; and ensure outstanding smoothness; KOYO bearing usually chooses grease smooth; oil can also be used smoothly. When grease is smooth; should be used without impurities, anti-oxidation, anti- Smooth grease with excellent function such as rust and extreme pressure. The filling amount of smooth grease is 30%-60% of the bearing and bearing box volume; it should not be too much. The double row tapered roller bearing and the pump shaft bearing with sealing layout are filled. Smooth grease; users can use it directly; no more cleaning.
KOYO 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 KOYO bearing end face with the number one thing; avoid damage KOYO bearing. Under the condition of small interference The sleeve can be pressed against the end face of the KOYO bearing ring at room temperature; the sleeve is struck with the head; the ferrule is pressed evenly through the sleeve. If it is a large-scale device; the hydraulic machine can be used. The end face of the outer ring and the shoulder end face of the outer casing; the end face of the inner ring and the end face of the shoulder of the shaft are pressed; no gap is allowed.
When the interference is large; you can use the oil bath heating or induction heating KOYO 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 means to tighten KOYO bearing; to avoid the gap between the ferrule and the shoulder when the bearing is cooled and the width direction is shortened.
The single-row tapered roller bearing device should be adjusted for the clearance at the end. The clearance value should be determined in detail according to the different operating conditions and the cooperative interference amount. If necessary, the experimental determination should be made. Double row tapered roller bearing The KOYO bearing is connected to the pump shaft at the factory. The clearance is adjusted at the factory; the device does not need to be adjusted.
After the KOYO bearing device, the rotation test should be carried out; firstly, it should be used for rotating shaft or KOYO bearing box; if it is not abnormal, it will work without load and low speed with power; then gradually increase the rotation speed and load according to the working condition; and detect noise, oscillation and Temperature rise; found abnormal; should stop work and view. Work experiments can be delivered after normal use.
Third, the opening of KOYO bearings:
KOYO bearing is intended to be used continuously after being removed; it should be properly disassembled. Disassemble the ferrule of the interference cooperation; only pull the force on the ferrule; never allow the detachment force to pass through the tumbling body; otherwise Both the roll and the raceway will be crushed.
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