Installation of tapered roller bearings

1. The installation of tapered roller bearings must be carried out under dry and clean environment conditions. Carefully check the mating surface of the shaft and shell, the end face of the shoulder, the groove and the surface of the connecting surface.. All the connection surface must be carefully cleaned and remove the burrs, rough surface has to be casting the net sand.

2, tapered roller bearings before installation should be gasoline or kerosene clean, dry after use, and to ensure good lubrication, bearings generally use grease, but also oil lubrication. When using grease lubrication, we should use no impurities, anti-oxidation, anti rust, extreme pressure and other superior grease.. The amount of grease filled with 30%-60% of the bearing capacity of the bearing box is not too much. Double row tapered roller bearings with sealing structure and pump shaft bearings have been well filled with grease, users can be used directly, can not be washed.

3, installation of tapered roller bearings must be on the circumference of the end surface of the ferrule put equal pressure, press into the ring, not used to the top tool directly knock on the end face of the bearing, so as not to damage the bearing. In a small amount of interference, at room temperature with suppress sleeve bearing ring face, with a hammer beating sleeve, through the sleeve will be pressed into the ring balance. If the mass is installed, hydraulic pressure machine can be used. When the pressure, should ensure that the outer ring end and the outer shell shoulder end, the inner ring end and shaft shoulder end pressed, do not allow clearance.

4. When the interference quantity is large, the oil bath heating or sensor heating bearing method can be used, the heating temperature range is 80, and the maximum can not exceed 120 -100. At the same time, application of nuts or other fastening bearing appropriate methods, in order to prevent the bearing cooling contract width way the between ring and a shaft shoulder gap.

5, single row tapered roller bearing installation of the final clearance should be adjusted. Clearance value should be used according to different conditions and with the amount of interference to determine the size and specific. When necessary, the test shall be determined. Double row tapered roller bearings and pump shaft bearing factory has been adjusted clearance, the installation does not need to adjust.

6, the bearings after installation should be rotation test, the first for the rotary shaft or bearing box, without exception, then the power of no load, low speed operation, then as the functioning of the gradually increase of rotational speed and load, and to detect noise, vibration and temperature, abnormal should be stop functioning and check. Normal operation test can be delivered to use.

Two, tapered roller bearing demolition

When the bearing is removed, the appropriate disassembly tool should be used when the intended to continue.. Demolition of the rings fit, will only increase tension in the ring, must not be allowed to pass through the rolling force demolition, or rolling body and raceway will be crushed.

Three, bearing the use of the environment

According to the use of parts and the use of conditions and environmental conditions for the selection of specifications, accuracy, with the appropriate bearing is to ensure the bearing life and feasibility of the premise.

1, the use of parts

Tapered roller bearings for radial load to bear mainly on the radial and axial joint load, usually bearing two pairs to use, mainly in the automotive front and rear wheels, active, differential bevel gear, reducer, and other transmission parts.

2, allowing speed

In the installation of the right environment, lubrication, allowing the bearing limit speed 0.3-0.5 times. Under normal circumstances, the limit speed of 0.2 times is the best.

3, allowing tilt angle

Tapered roller bearings are generally not allowed to tilt axis relative shell hole, if tilt, is less than 2'.

4, allowing temperature

Under normal load, and the lubricant has high temperature resistance, and lubrication is sufficient, the general bearing allows the temperature of the environment at the -30 for the -150.