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Rolling bearing specification
Source: China Bearing Network Time: 2013-02-25
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
First, the centripetal ball bearing 1, the inner ring raceway off; severe wear; the inner ring has cracks.
2, the ball is out of round or the appearance is off; there is a crack.
3. The cage is severely worn.
4. There are noises and oscillations during the transition; there are brake representations and retreats when they stop.
5. The cooperation gap of the bearing exceeds the maximum value of the regular clearance.
Second, the tapered roller bearing 1, the inner ring raceway off; severe wear; the inner ring has cracks.
2. In the long direction of the roller; the intermediate forward displacement exceeds 1.5 mm; the tapered roller front end is greater than 2~3 mm from the outer ring margin.
3, the cage wear; can not gather the roller on the inner ring; break; deformation can not be corrected.
Third, centripetal spherical roller bearings and radial short cylindrical roller bearings 1, the inner ring raceway and roller have broken, pitting and deep wear marks.
2. The cage is deformed; the roller cannot be folded on the inner ring.
3. The cooperation gap between the raceway and the roller is greater than 0. 06mm.
Fourth, thrust ball bearing 1, two rolling washers are stripped and severely worn.
2. The ball is broken or has a pitting.
3, the cage deformation is severe; can not gather the ball.
Substitution criteria and alternative methods for rolling bearings The alternative criteria and alternative methods for rolling bearings are as follows:
First, the rolling bearing replacement criteria 1, the bearing capacity coefficient and the static load and other technical parameters should be equal to the technical parameters of the original bearing. 2, should be selected to allow the limit speed is equal to or higher than the actual speed of the original bearing.
3. The accuracy grade of the substitute bearing is not lower than the accuracy grade of the original bearing.
4, the scale should be the same; can not arbitrarily change the scale of cooperation between the machine and the bearing due to the replacement of the bearing.
5. Select the bearing with the insert method; ensure the concentricity of the cylindrical surface of the inlaid bushing; and choose the public service and cooperation correctly.
Second, the rolling bearing replacement method 1, the direct replacement of the bearing's inner diameter, outer diameter and thickness scale is exactly the same as the original bearing; no need to adopt any method can be used.
2. The inner diameter and outer diameter of the substitute substitute bearing are exactly the same as the original bearing; only when the width is narrow; the pad can be used instead. The thickness of the added washer is equal to the difference between the original original bearing and the substitute bearing. The inner diameter and the shaft of the washer Use void cooperation; the outer diameter is the outer diameter of the inner ring of the bearing. The two ends of the gasket should be parallel; the washer should be close to the shoulder of the shaft when the device is installed.
1. In the case of wide and narrow, there is no substitute bearing near the original bearing scale; the method of changing the journal or the casing hole can be adopted; it can cooperate with the substitute bearing. However, the machining amount of the journal or the aperture cannot be too large to avoid affecting the part. Strength. Select the type of bearing machine; try not to use this method.
2, the size of the shaft or shell hole is changed. For non-standard screened bearings; the method of changing the journal or shell hole can be adopted; it can cooperate with the substitute bearing. However, the machining amount of the journal or the aperture should not be too large to avoid the influence. Part strength. Select the type of bearing machine; try not to use this method.
3, the replacement of foreign bearings for foreign bearings can be based on their trademarks and types; from the relevant manual to find the corresponding domestic type.
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| Talking about the basic requirements of the quality of bearing steel exercise, the basic characteristics of the bearing roller, the main grade of the static pressure bearing, the imported bearing, the "cold heat device" Oscillating analysis method for the diagnosis of rolling bearing problems |
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