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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>The device for importing bearings usually uses the following methods The equipment for importing bearings is usually selected as follows
The equipment for importing bearings usually uses the following methods: /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
.1) Pressing the inner ring of the cooperative bearing is tight with the shaft; when the outer ring and the bearing housing hole are loosely engaged; the bearing can be pressed on the shaft by the press; then the shaft is fitted into the bearing housing together with the bearing Inside. Pressing on the end face of the inner ring of the bearing; padding a device made of soft metal material "copper or mild steel".
The inner diameter of the casing of the device should be slightly larger than the diameter of the journal; the diameter of the outer diameter should be slightly smaller than the inner ring of the bearing. Banyan 3 is intended. The outer ring of the imported bearing is tightly coupled with the bearing housing bore; the inner ring and the shaft For looser cooperation; the bearing can be pressed into the bearing housing hole first; then the outer diameter of the device sleeve should be slightly smaller than the diameter of the seat hole.
If the bearing ring and the shaft and the seat hole are tightly cooperated; the inner ring and the outer ring should be pressed together into the shaft and the seat hole; the layout of the device bushing should be able to press the end faces of the inner ring and the outer ring together.
.2) Heating cooperation through heated bearings or housings; using thermal expansion to transform tight cooperation into a loosely coupled device approach. This is a common and labor-saving device approach. This method is suitable for devices with large interference bearings. Before loading, put the bearing or the ferrule of the separate bearing into the fuel tank and heat it evenly at 80~100°C; then remove it from the oil and load it on the shaft quickly; to avoid the inner ring end face and the shoulder joint not tight after cooling; bearing After cooling, the axial fastening can be carried out. When the outer ring of the bearing is tightly coupled with the bearing made of light metal; the hot-filling method of the heated bearing seat is adopted; the cooperating surface can be prevented from being scratched.
When heating the bearing with the oil tank; use a grid at a certain distance from the bottom of the box; perhaps use a hook to hang the bearing; the bearing should not be placed on the bottom of the box; to prevent deposition of impurities into the bearing or uneven heating; there must be a thermometer in the tank; Strictly control the oil temperature should not exceed 100 ° C; to avoid the seizure effect; reduce the hardness of the ferrule.
.3) The tapered bore bearing of the tapered bore bearing can be mounted directly on the tapered journal; or on the tapered surface of the adapter sleeve and the withdrawal sleeve; the cooperative tightness can be reduced by the radial clearance of the bearing. The amount should be measured. Therefore, the radial clearance of the bearing should be measured before the device; the clearance should be measured during the installation to reach the required clearance reduction. The lock nut device is usually used in the device; the heating device can also be selected. Way.
.4) Thrust bearing device The cooperation of the shaft ring and the shaft of the thrust bearing is usually a transitional cooperation; the cooperation between the race and the bearing housing hole is usually the cooperation of the gap; therefore, the bearing is easier to install; the middle shaft of the two-way thrust bearing should be Fixed on the shaft; to avoid transitions relative to the shaft.
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The equipment for importing bearings is usually selected as follows
Source: China Bearing Network Time: 2014-07-07