We can provide free samples . Please contact Email for any inquiries

Rotating flexible check one-way bearing, if not the abnormal phenomenon, then the dynamic running inspection.
Stuck - reason: foreign intrusion, rolling section scar
Large - reason: friction torque sealing device, clearance is too small, installation error.
Rotary torque imbalance - causes: incorrect installation, installation error.
TIMKEN bearings for not large mechanical hand wheel, can start at no load condition, then immediately turn off the power, inertia operation. At this time, no confirmation of abnormal vibration or noise, rotation is normal, and then into the dynamic operation.
Into the dynamic operation, from low no-load start, gradually reach the required operating conditions. Dynamic running inspection is mainly judged by sound, temperature and vibration, should immediately identify the causes, the one-way bearing must be removed for inspection.
Sound check TIMKEN bearing unidirectional, generally the use of listening stick.
Check the one-way bearing temperature, generally can infer according to shell temperature, but the use of the oil hole and directly measure one-way bearing temperature is the most correct.
The grinding layer, layer, two layer of high temperature quenching processing molten TIMKEN bearing, metal molecular melt flow is evenly coated on the surface, and the base metal to speed cooling fast, forming a thin layer of amorphous layer. It has high hardness and toughness, but it was only about 10nm, it is easy to be removed in the precision grinding.
The instantaneous high temperature of TIMKEN bearing grinding area can make certain the depth of surface (10 ~ 100nm) is heated above the tempering temperature of workpiece. At the austenitizing temperature did not reach the case, with the heating temperature increasing, the surface by changing layer will produce corresponding with the heating temperature and tempering or high temperature tempering microstructure, hardness decreased. The heating temperature is higher, the hardness decreases more.
TIMKEN bearings when the instantaneous temperature of the grinding zone the workpiece surface layer is heated to the austenitizing temperature (Ac1) above, the layer of austenitic organization in the subsequent cooling process, again by quenching into martensite. There are generally two times quenching the workpiece burn, under the second quenching layer must be high temperature tempering layer of very low hardness.