Correctly grasp the SKF bearings in machinery used parts of the device, and the conditions of use and the choice of environmental conditions are suitable for spherical roller bearings of the premise. For, you need access to data and information on the following:
(1) mechanical device function and structure
(2) using parts of the bearing
(3) the bearing load (size, orientation)
(4) rotate speed
(5) vibration and shock
(6) bearing temperature (ambient temperature, temperature rise)
(7) the surrounding atmosphere (corrosion, cleanliness, lubrication)
So-called occurred spherical roller bearings burn injury State refers to: bearing Raceway round, rolling and spinning sharply fever until the discoloration, softening, cladding and tear. Mainly responsible for bearing Burns was due to poor lubrication SKF bearings, may use irregular lubricant, or excessive lubricant, too little is not correct.
Secondly might be too much load (preload is too large). Excessive speed. Clearance is too small. Water or other foreign bodies penetrated. If the above two conditions are not so is the poor accuracy of axle and bearing boxes, large deflections of the shafts. See here, I think we all want to know the way of solving the problem, first of all, to research on lubricant and lubrication method, selected reverse roller bearings lubricant and its dosage, and to correct bearing selection. Research in line with, SKF bearing clearance and preload, and improved sealing device. Check the accuracy of the shaft and housing.
Product Model | Inside Diameter | Outside Diameter | Thickness |
NJ211EW NSK | 55 | 55 | 21 |
NJ210EW NSK | 50 | 50 | 20 |