Pre-bearing considerations

Source: China Bearing Network Time: 2018-03-25

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1) Preparation of the bearing Because the bearing is disposed of by anti-rust and packaged; therefore, do not open the package before the device.
Others; the anti-rust oil coated on the bearing has an outstanding smooth function; the bearing for normal use or the bearing filled with smooth grease; can be used without cleaning. However, the bearing for exterior or the bearing for high-speed rotation; The cleaning oil will wash away the rust preventive oil; at this time the bearing is simply rusted; it is not allowed to be placed for a long time.
2) Inspection of the shaft and the outer casing to clear the bearing and the outer casing; acknowledge the burrs left by the scratches or machining. There must be no abrasive (SiC, Al2O3, etc.) sand or chips in the outer casing.
Secondly, check whether the scale, shape and processing quality of the shaft and the outer casing can match the drawing.
Before the bearing of the equipment; apply the mechanical oil on the cooperation surface of the qualified shaft and the outer casing.
Bearing equipment method The bearing equipment method varies with bearing type and cooperation conditions.
Because usually the shaft is rotated; therefore, the inner ring and the outer ring can be separated from each other by using interference cooperation and void; when the outer ring is rotated; the outer ring is used for interference cooperation.
The bearing equipment method used in the interference cooperation can be divided into the following types; the following table is as follows:
(1) Pressing equipment Pressing equipment usually uses a press; bolts and nuts can also be used; hand hammers can be used for equipment when necessary.
(2) The hot-sleeve device heats the bearing in the oil to expand it, and then the hot-sleeve method on the shaft can prevent the bearing from being subjected to unnecessary external force; the equipment operation is completed in a short time.
Heating precautions:
1) Normally do not exceed 100 degrees Celsius.
2) Do not allow the bearing to touch the bottom of the oil groove.
Other hot-sleeve equipment can also use induction heating equipment to heat the bearing to make it expand on the shaft.

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