Universal joint bearing some problems using inspection work

Bearing in the work, as a result of external or internal factors ( 因素) The influence, change the original fit clearance, accuracy is reduced, and even cause; Bite dead; Referred to as the clearance change failure. , large amount of the external factors such as interference of installation does not reach the designated position, temperature rise caused by the expansion, instantaneous overload, etc. , internal factors such as residual austenite and the residual stress in a state of flux and so on all is the main reason for the failure caused by clearance changes. Rotate the outer ring and flush the cage carefully, rolling element and the raceway border and need a thorough ( 彻底) Cleaning of oil residue any part of it that was previously hidden. Bearing ( 轴承) Should be attached to rinse friendly dry cleaning, dry clean lined with neutral table support, or in the far infrared drying oven is slow. If the dry cleaning friendly dry or drying, the whole process should not put the bearing ring, adhere to any framework ( 框架) Or rolling body. Universal joint bearing oil delivery before testing in practice can remove oil seal, and immersed in kerosene or gasoline cleaning without acid 3%. Should be required to inspect drip lubrication ( lubrication) Oil and instant delivery, is dry or dry bearings. Bearing the use of clean environment for bearing is very important. Such as cross section thin-walled bearing ring rotation surface and rough surface precision of the rolling element is about 1/10 microns, this smooth surface of the ball if polluted, its influence is very serious. At this time no oil film, so as to protect the exterior surface of SKF bearing, the inspectors do not allow direct contact with the skin of the process, operation ( 经营) Personnel should wear clean gloves, hand painted with rust, but must be avoided in the hands of the appearance of the corrosion inhibitor mixed rolling bearing, or be the deviation of measurement results. Should reach or rust stock processing, immediately after completion of the entire process of inspections should be, check the bearing ( 轴承) 。 Thin wall bearings manufacturer of angular contact ball bearings can match the optimal number of balls and the contact Angle of 30 °. They support radial load is higher than contact bearing deep groove ball bearings or four o 'clock, and can support comes from the same direction of axial load. In view of the special demand, time is too long, lest cause corrosion. Note that ( 注意) The use of clean pure gasoline without oil ( 使用) , also can cause corrosion. Bearing ( 轴承) Already dry, or dry, shall be in accordance with the provisions, check without the outer surface of the bearing oil film protection drip into the lubricating oil and instant delivery, at this time, the whole process of inspection, process) , does not allow direct contact with human skin, the operator should wear clean gloves, hand painted with rust, but must be avoided in the hands of a rust inhibitor gimbal bearings rolling surface mix, otherwise it will be the deviation of measurement results. Bearing ( 轴承) Check is immediately after the completion of delivery or rust count process ( process) , seize the completion of the inspection process should be as far as possible don't last too long to cause corrosion ( Definition: refers to decay and disappear, erosion, etc. ) 。 Pay attention to the pure gasoline use clean oil, also can cause corrosion. Grinding quality of bearing ( 轴承) Premature failure can decide from the above test results, the influence of grinding cracks and grinding burn on one side of the raceway is cause ring split, a direct cause of the premature bearing failure, a crack in this example reveals macro morphology ( pattern) And the distribution characteristics of grinding burn, the original position of raceway partial or race R not round, make on one side of the raceway grinding allowance increases, when the coarse grinding phase feeding, grinding speed, the whole race is uneven grinding. If the grinding wheel dressing, not in time to chip embedded or sticky pore blockage caused by grinding wheel and passivation, thus will cause increased grinding wheel unbalance, spindle vibration, even machine tool vibration and grinding chatter. Grinding force is obviously cyclical change, form discontinuity burns a stripe. In order to further understand the hardness of ring ( 硬度) Distribution and quenching tempering microstructure and surface microstructure characteristics, choose some split inner ring and its pieces, in the face and upper macro hardness, and the cutting method in split near interception longitudinal metallographic specimen. How to prevent damage of rotary cultivator universal joint universal joint cross shaft needle bearing the correct maintenance methods ( 方法) Universal joint cross shaft filling butter hot extrusion die design of universal joint cross shaft universal joint BEARING needle roller BEARING the correct maintenance of the roughing mill cross cardan shaft optimization design and retrofit of universal joint cross shaft the correct maintenance of the needle roller BEARING, correct lubrication of the universal joint cross shaft universal joint cross shaft needle BEARING the correct maintenance of the NINGBO SUNTHAI BEARING F& An article on F: simple diagnosis and precise diagnosis of rolling bearings under a: stainless steel bearing processing: stainless steel processing and key construction technology