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Poor lubrication of bearings; bearing excessive load; poor accuracy of shaft, bearings are reasons for which bearings were burned, bearing under the following details for all causes of burns.
Bearing one of the reasons burns are due to poor lubrication of the bearings, lubricant may use irregular or excessive lubricant, too small, are incorrect.
Bearings burning reason are bearing excessive load; the rotational speed of the bearing is too large; bearing clearance is too small, water or other foreign body penetrated.
Bearing Burn three of the reasons of poor accuracy of shaft, bearings, shaft deflections.
Bearings were burned three causes of bearing burn appears at the State of bearing Raceway round, rolling elements and cage spinning rapidly heat until the discoloration, softening, cladding and damaged.
Recommended bearings when used, pay attention to the installation, lubrication, clearance and so on each link is accurate as far as possible, in place, thus reducing bearing burn and extend the life of the bearing.
Bearing noise is caused is more complex, one of which is within, the outer mating surfaces of the bearing wear. Because of this wear, undermined the bearing shells, scrolls the cooperation relationship between the bearing and shaft, led to deviations from the correct location, noise resulting from the axis at high speed. When bearings are tired, its surface metal flaking, there will be bearing radial clearance increases the noise. In addition, insufficient bearing lubrication, the formation of dry friction and bearing broken produces abnormal noises. After bearing wear loose, loose cage damage, will also have an abnormal sound.
(1) the bearings have been damaged, it should be replaced immediately.
(2) bearing grease, too little, or too much iron impurities. Shaft bearing grease should not be more than the total volume of 70%, with impurities should be replaced.
(3) the shaft and bearing too tight or too loose. Too tight to be grinding again, too loose hinge mounting should be.
(4) bearing and end caps suit is too tight or too loose. Too tight machining bearing housing, too loose in the end cover with the steel.
(5) poor cover or housing cover fitted on both ends of the motor. Stops the mouth into the end cap or housing cover, loading, and tighten the screws.
(6) the belt too tight or poor coupling Assembly. Adjust the belt tension, correct coupling.
(7) bearing too little lubricant, oil has impurities or ring snaps into place. Should such as refueling, new oil, repair or replace the oil ring.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7210A5TYNDBLP4 NSK | 50 | 90 | 20 |
| 7210CTYNDBLP4 NSK | 50 | 90 | 20 |