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Tapered roller bearing and water pump shaft bearing device

January 03, 2019

The device of Tapered Roller Bearing and water pump shaft bearing should pay attention to the following aspects: 
First, the bearing device: 
The 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 observe the appearance of all cooperation. Remove and remove the burrs; it is necessary to remove the residual molding sand from the unprocessed appearance of the casting. 
Before the bearing device, it should be cleaned with gasoline or kerosene; it should be used after boring; and it should be excellent and smooth; the bearing should be smooth grease; the oil can be used smoothly. When the grease is smooth, it should be free from impurities, oxidation and rust. Extreme pressure and other functions of high-quality smooth grease. Smooth grease filling capacity is 30%-60% of bearing and bearing box volume; not too much. Double row Tapered Roller bearing and water pump shaft bearing with sealing layout have been filled with smooth grease Users can use it directly; no more can be cleared. 
When bearing the 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 bearing end face with the number one thing; avoid damage to the bearing. Under the condition of small interference; Press the sleeve on the end face of the Bearing Ring at normal temperature; hit the sleeve with the head; press the sleeve evenly through the sleeve. If it is a large-scale device; use a hydraulic press. When pressing in; ensure the outer ring end face and The shoulder end face of the outer casing; 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 oil bath heating or induction heating to install the device; the heating temperature is 80 °C-100 °C; the maximum can not exceed 120 °C. Together; use nuts or other appropriate means to tighten the bearing ; to avoid the shortening of the width direction of the bearing after cooling, resulting in a gap between the ferrule and the shoulder. 
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 And the pump shaft bearing has been adjusted at the factory clearance; the device does not need to be adjusted. 
After the bearing device, the rotation test should be carried out; firstly, the shaft or bearing box should be rotated by hand; if it is not abnormal, 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, oscillation and temperature rise will be detected. Found abnormal; should stop the operation and check. After the operation experiment is normal, it can be delivered. 
Second, the disassembly of the bearing: 
After the bearing is removed, it is intended to be used continuously; the appropriate unpacking should be used. The inner ring of the interference cooperation should be dismantled; only the pulling force should be added to the ring; never allow the roll (outer ring) to pass through the roll Open force; otherwise the roll and raceway will be crushed. 
Third, the operating environment of the bearing: 
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 bearing life and reliability. 
1. Application: Tapered roller bearings are suitable for receiving radial and axial combined loads with radial loads; usually used with two sets of bearings; primary and secondary hubs, automatic bevel gears, differentials Transmission parts such as reducer and reducer.
2, promise speed: in the correct, smooth and outstanding environment; the maximum speed of the bearing is 0. 3-0. 5 times. Normally under normal conditions; the limit speed of 0.2 times is the most suitable. 

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