Regularly check NTN linear bearing should consider the problem

Don't let your NTN bearing on pollutants or moisture. If things continuously when, should with oil film, paper or similar material was dull. If not remove about and carry out a raid in the scene to the cleaning of linear bearing without masking, to clean with brush with petroleum solvent coating, then dry with a lint-free cloth or use compressed dry. ( Pay attention to don't let the noise of bearing component starting rotation) 。 With a little mirror, and the probe used in the same dentist to raid bearing the orbital plane, retainer and beads. No cleaning encrypted block or dust bearing; You just wipe its external appearance. If the NTN bearing is damaged need to switch off scene. In the scheduled outage period change former linear bearing is far better than the array bearing damage the royalty for the selected into shutdown loss much more economical. After determined the NTN bearing type and model, must also be correct for the combination of the rolling bearing structure design, to guarantee the normal work of the bearing. Short axis of normal operating temperature ( Span L< 400mm） , on both ends of the one-way fulcrum often USES fixed way, each bearing a under the direction of the axial force. As shown in figure, to allow the shaft work there is a small amount of thermal expansion, linear bearing installation, axial clearance shall be maintained. 25mm- 0. 4毫米( Don't have to draw the clearance is small, chart) , the interval used pads or adjusting screw to adjust. Fixed comprised of a single NTN bearing or bearing group under bidirectional axial force, while swimming end guarantee axis telescopic can swim free. To avoid loose, winding bearing inner ring and shaft axial fixation ( The elastic ring) is often used to 。 Make swimming protection with linear bearing, bearing outer ring with axial fixed frame, by swimming between roller and ring to ensure that the free expansion of shaft. Linear bearing design life do not agree with the machine, usually need to be replaced in use process many times, when with NTN bearing assembly relation between parts damage also need to remove the bearing, remove the bearing should be made without disassembly force transfer roller, in case of plastic deformation in the rolling element. Remove linear bearing usually use special tools, the design of shafting formula should be tool allows sufficient for the use of space, the data can be found in the manual of NTN bearing.