NSK bearings temperature rise, first to see if there is an error, if the temperature is rising, you should immediately do the following:
　　(1) check for abnormal noise bearing, and test the swing bearing is abnormal.
　　(2) the oil sample observation of oil color is changing, NSK bearings and tests to see if bad. If confirmed when the deterioration, downtime should be replaced with new oil.
　　(3) check oil oil level is normal, if normal, check whether the tank Vent valve close. Bearings if it is rolled, oil to be filled, if it is a sealant gasket oil leakage, should stop processing.
　　(4) check the cooling water pressure, flow and pipe system is normal NSK bearings. If low water pressure may be filter clogged, not processed in a timely manner, can shut down, when the confirmation work, again put into use.
　　(5) the Governor oil pressure should be checked, if oil pressure may lead to cooling water hydraulic valve is closed.
　　Must try to avoid bearing high temperature phenomena occur, so as to increase its service life.
　　It is well known that all NSK bearings in an active process, the inner rings must be fixed. Below briefly explain the inner ring of the bearing fixed forms.
　　1. lock nut fixed
　　NSK bearing inner ring by the shaft and the locking nut to achieve axial fixation. And stopping collar locking, safe and reliable, suitable for high speed, heavy duty occasions.
　　2. end-thrust washer fixed
　　Bearing inner ring shaft and axle retaining ring to achieve axial fixation. Axle retaining ring screws fixed to the shaft end. Captive screw locking device.
　　Suitable for shaft ends should not be cutting threads or forums with limited space.
　　3. the sleeves fixed
　　Rely on radial dimensions of holes in an adapter sleeve is compressed and the clamp on the axis to achieve axial fixation of the bearing inner ring.
　　4. the withdrawal sleeve fixed
　　A withdrawal sleeve clamp with adapter sleeves the same way. But the withdrawal sleeve with a specially-crafted nut, the bearing convenient, suitable for large radial loads, axial load double row spherical bearings on the shaft of the smaller fixed.
　　Fixed NSK bearings, operate in accordance with the above methods, you will extend the life of the bearing.
　　5. shoulder fixed
　　Bearing inner ring depends on the shaft and an interference for axial fixed.
　　Applies to fixed at both ends of a support structure.
　　Simple structure, small overall dimension.
　　6. elastic retainer ring fixed
　　Shaft bearing inner ring and locking nut to achieve axial fixation.
　　Affordable modest bidirectional axial load.
　　Axial structure of small size.


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