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Rolling bearing IKO substitution principle and method
According to rolling bearing IKO type different, Swiss precision mechanical and electrical will be divided into the following several aspects:
One, the centripetal ball bearing
In 1, the raceway of spalling, wear serious, inside and outside the ring crack.
In 2, the ball out of round or surface flaking, cracking.
In 3, the retainer wear.
4, rotation noise and vibration, stops when there is brake phenomenon and the retrograde inversion.
In 5, IKO bearing clearance exceeds a specified maximum clearance.
Two, tapered bearings/">roller bearing
In 1, the raceway of spalling, wear serious, inside and outside the ring crack.
In 2, the roller length of center forward, more than 1.5mm, tapered roller front-end to stay away from the periphery of greater than 2 ~ 3 mm.
In 3, the retainer wear, can not be folded in the inner ring of the upper roller, rupture, deformation can not be repaired.
Three, radial spherical roller bearings and the radial short cylindrical roller bearing
1, inner and outer ring raceway and roller has broken, pitting and deep grinding marks.
In 2, the holder deformation, can not be folded in the inner ring of the upper roller.
In 3, the raceway and roller clearance greater than 0.06mm.
In four, the thrust ball bearing
In 1, the two raceway washers are stripped and severe wear.
2, breaking ball or pits.
In 3, the holder is seriously deformed, not be folded ball.
Rolling bearing of IKO substitution principle substitution method
Rolling bearing of IKO substitution principle and maintenance methods are as follows:
A rolling bearing, IKO substitution principle
In 1, IKO bearing capacity coefficient and allow static load and other technical parameters should be equal to the original IKO bearings technical parameter. The 2, should choose to allow the limit speed is equal to or higher than the original IKO bearing the actual speed.
In 3, the substituted IKO bearing accuracy level or below the original IKO bearing precision grade.
In 4, to the same size, not because of the replacement of IKO bearings and change the machine with the IKO bearing is matched with the size of.
5, adopt a set of methods of IKO bearings, to ensure that the insert sleeve inside and outside cylindrical surface concentricity, and should be the correct selection of tolerances and fits.
In two, IKO substitution of rolling bearing
In 1, a direct substitute
Substitute IKO bearing bore diameter, the diameter and thickness dimensions with the original IKO bearing identical, does not need to take any measures can be installed to use.
2, padded substitute
Substitute IKO bearing bore diameter, diameter and the original IKO bearing identical, only narrow width, can use padded substitute. The gasket thickness equal to the original original IKO bearing and substitute IKO bearing width. Washer diameter and shaft adopts a clearance fit, diameter IKO bearing inner diameter. Ends of the washer surface should be parallel, installation washers shall be close to the axis of the shoulder.
1, wide and narrow
When not with the original IKO bearing size similar to substitute IKO bearing, can take the change of shaft or housing holes approach, and the substitution of IKO fit the bearing. But the shaft neck or aperture processing volume is not too large so as not to affect the strength of the parts. Using standard models of IKO bearing machine, try not to use this method.
2, change the shaft or to the casing hole size
For non standard has been knocked out of the IKO bearing, can take the change of shaft or housing holes approach, and the substitution of IKO fit the bearing. But the shaft neck or aperture processing volume is not too large so as not to affect the strength of the parts. Using standard models of IKO bearing machine, try not to use this method.