Angular contact ball bearing of checking the impact on the use

Machine tool shaft parts, especially the main shaft, ordinary and thrust ball bearing assembly into an organic whole, and rotate at high speed, can sometimes produce high heat. The phenomenon such as not timely cleaning, overheating will cause angular contact ball bearing, and makes the corresponding parts temperature rise and thermal deformation will occur, serious when they make the main shaft and tail frame range is high, it not only affect precision and machining accuracy of machine tool itself, but also the bearing burn out. Rated fatigue life, it is to point to a set of the same type of bearing, in the same conditions, 90% of the rolling angular contact ball bearing is not tired provoked the peeling of the total number of turns. When the rotating speed is constant, multi-purpose total run time rated fatigue life. When discussion thrust ball bearing life, not only thinking about fatigue life, but also on the basis of the performance of the bearing should have comprehensive several limit are used to thinking. For example, fat smooth smooth bearing grease life. Life and wear life, noise, on the basis of use is different, use different limit benchmark, so, mostly chosen in advance experience. Consequently, only survey angular contact ball bearing damage, the real reason is hard to come by injury. But, if know the use of machinery, thrust ball bearing, the bearing conditions around the structure and understand the situation before and after the accident attack, release bearing damage status and several kinds of reason, can avoid the similar accident attack again. Angular contact ball bearings can be available, is primarily to think bearing damage, mechanical performance, importance, and operating conditions, to the next overhaul period and resolution. If has the following defects can't use, it is necessary to change the new thrust ball bearing. Inner ring and outer ring, rolling body, insist on frame on any one have crack or gap. Wear failure is one of the common failure forms of all kinds of bearings, according to the usual wear can be divided into one of the most common of abrasive wear and adhesive wear. 1. Oil film resistor diagnostic technique features: can be applied to different working condition the same criteria. Flake on appearance, indentation and crack the diagnosis of abnormal effect is poor. Application range: applicable to the axis of rotation exposed. 2. Vibration diagnosis technology features: vibration diagnosis technology application common; Can be completed online monitoring; Diagnosis, diagnosis theory has been mature. Scope of application: special right angular contact ball bearing fault in rotating machinery monitoring. 3. Ferrographic diagnosis technical features: the machine without collapse; Low investment and good effect; Early fatigue failure can be found without oil bearing; To do wear mechanisms for discussion. Application range: applicable to use smooth oil smooth angular contact ball bearing fault diagnosis, on lipid smooth bearing is more difficult. 4. Temperature diagnosis technology features: simple diagnosis; For bearing burn discriminant effect is better. Application range: applicable to the machine simple routine diagnosis of bearing. 5. Optical fiber monitoring and diagnosis technology features: high flexibility fiber optic displacement sensor; To extract the signal directly from the oilless bearing appearance, improved signal-to-noise ratio; Can directly reflect the angular contact ball bearing manufacturing quality, appearance and wear level, load, smooth and clearance status. Application range: applicable to sensor device can be within the bearing seat of machine. 6. Acoustic emission diagnosis technical features: diagnosis quickly and cumbersome; Can online monitoring. Application: in recent years, in order to develop new technology, less used in bearing condition monitoring. Directly with the hand take oilless bearing, plenty to wash hands sweat and coated with high quality mineral oil and then stop the operation, especially in the rainy season and summer to pay more attention to rust. In some special operating conditions, angular contact ball bearing can achieve a good traditional computing life, especially under the condition of light load. These special operating conditions is, when the rolling surface ( Track and rolling piece) Can be separated by a smooth film effectively and limiting pollutants can cause the appearance of damaged. In fact, under ideal conditions, the so-called bearing life is eternal may not allow strong stamping, are not allowed to use hammer percussion bearing directly, not allowed to transmit pressure after rolling body. Angular contact ball bearing a rotation, inner ring and outer ring raceway surface, with rolling body is rolling contact, so running track for the dark side, do not belong to the abnormal running track attached to the raceway surface, which can be learned that load conditions, so remove the oilless bearing, please keep close attention to track and view the raceway surface movement.