The correct use of TIMKEN bearing grease for sound reasons - bearing knowledge

In general, TIMKEN bearing grease filling amount, in the direct involvement is always more than the actual requirement of the lubrication, the frame and the bearing cover cavity, and forms an outline in rolling around in vitro. In this process, due to excess grease resistance, bearing temperature rise quickly. Although most redundant grease at the beginning of the operation is being squeezed out, and squeezed in the raceway attachment grease could still be turning into the groove between roller. Most of these in the early stages of the bearing grease quickly ( Less than a minute) Is being squeezed out of raceway and the accumulation in the grease in the bearing rotation of systemic circulation at the same time, have a small amount of discharge. When bearing (degrees still continue to rise, until all redundant grease were discharge, may be called the grease running-in stage, according to the structure of the bearing grease factors such as quality, filling quantity, this paragraph of time can last more than ten minutes, or even a few hours. The rest of the rest of the grease is completely after discharge, a small amount of grease in the rolling element and raceway, keep touch each other, cadastral wedge formed by a thin film of grease, so as to enter the bearing contributed to stage. The temperature decrease and balance. That is to say, the long-term lubrication, mainly rely on the film of grease. In addition, in the process of bearing long-term operation, rolling element and raceway profile near detachments and keep on the shelf to atrophy and grease base oil, flow into the race, between supplement to lubrication also to have certain effect. Lubricating oil or grease varieties to choose wrong, Choose suitable will reach the best effect) TIMKEN bearings in mixed with water, acids or paint and other dirt, corrosion effect TIMKEN bearing is hole clip flat ( Hole hole roundness is not good, or distortion is not straight) TIMKEN import and the bottom surface of the bearing pad iron uneven ( Lead to a hole deformation even TIMKEN bearing cracks) TIMKEN bearing hole with sundry ( Residues have chip, dust, etc. ) TIMKEN bearing clearance is too small, too tight (when rotating Set set of tighten too far) Insufficient lubrication ( The oil level is too low, the oil or grease seal leakage) TIMKEN bearing clearance is too small ( Choose the wrong) Seal eccentric ( Touching the adjacent components and friction) TIMKEN bearing by additional load ( TIMKEN bearing axial awful a tight, or on a shaft with two fixed end TIMKEN bearing) TIMKEN bearings and shaft is too loose, The smaller the diameter of the shaft or set set not tighten) TIMKEN bearings in sand or impurities such as carbon, small abrasive effect of hole diameter ( Cause the TIMKEN bearing temperature is too high) TIMKEN bearing hole diameter is too large, the actual fit is too loose ( TIMKEN bearing temperature is too high - - - - - - Outer ring skid) TIMKEN bearing hole bigger ( Non-ferrous metal TIMKEN bearing hole was enlarged, or because of the thermal expansion) TIMKEN bearings have noise, The roller face or steel skid) Excessive axial thermal elongation ( TIMKEN bearing axial additional load is statically indeterminate) Shoulder is too big, Touching the TIMKEN bearing the seal and friction) Holes of the block shoulder is too big, Send the TIMKEN bearing seal touch misrepresenting) Labyrinth seal gap is too small ( With the shaft friction) Lock washer tooth bending ( The TIMKEN bearings and friction) Left the position of the oil ring is not appropriate ( The flange cover and friction) TIMKEN bearing heat discoloration and deformation ( Use spray gun to heat remove TIMKEN bearing caused by) Shaft is too coarse to make actual fit too tight ( Cause the TIMKEN bearing temperature too high or noise) TIMKEN bearings have noise, TIMKEN bearings have micro abrasive) On the ball or roller pressure pit ( Installed with a hammer caused by TIMKEN bearing) TIMKEN bearing noise ( There are foreign source interference) According to the contrast of the above reasons, you can generally analyze the TIMKEN bearing ring the exact reason.