A whole series of NSK bearings, bearing steel knife with a quenching

Due to poor casting with lron brittle, running-in, reason is only applicable to light load low speed and is not affected by impact load, non-metallic materials, non-metallic materials is used in all kinds of plastic ( Polymer materials) , such as phenolic resin, nylon, polyvinyl fluoride, etc. Second, the traditional wheel bearing is need to refill the butter, the wheel bearings are tapered roller bearings, ball bearings and bearing shell can be separated, and itself has no bearing oil seal, need to install additional oil seal in the axle wheel hub, so its impermeability and durability than integrated hub bearing differs a lot, so it caused the need for periodic cleaning and late filling butter and clearance adjustment. Degree, spacer method: between the bearing ring or between the bearing ring and adjacent parts adopt spacer or baffle, instead of the whole shoulder or bearing shoulder is very convenient, and no effect, if you use a lock nut should be fixed on the shaft, it is recommended to use KMFE lock nut or add spacer ring between the bearing and the nut. Applicable: oil mist lubrication is suitable for high speed situation, oil lubrication with the method of high-pressure jet, will to the bearing lubricating oil injection, for bearing lubrication mode of lubrication. Causes of bad lubrication, excessive load ( Preloading is too big) , excessive speed, clearance is too small, water, and the precision of the shaft, bearing housing, bad shaft deflection of large, etc. For actual mechanical application, the bearing life relations is not very big, and poor lubrication bearing is as the key, for as long as possible in good condition to maintain the performance of the bearing was must often maintenance, repair, in order to prevent the fault development, to ensure reliability of the operation, to improve the productivity and economy. Only work up to standard, to improve equipment efficiency, rolling bearing cleaning first with rust-proof oil seal of the rolling bearing can use petrol or kerosene wash. When ambient temperature is lower than ℃, available iodine tungsten lamp heating tools such as repair parts for heating, in order to protect coated material, surface temperature is not lower than ℃, facilitate bonding. M/s, lubricating oil viscosity ℃ - Mm/s, applicable L - lubricating oil 退火, AN oil or L - total loss system The TSA turbine oil or turbine oil; Spindle shaft linear velocity. If speed between the meters per second is not high-speed bearing, a bearing can lubrication can satisfy basic, maintenance, cleaning and maintenance of bearings, lubrication and installation. Adopt PLC programmable controller and the servo motor control flash process, can accurate setting flashing, flashing speed and quantity of by microcomputer resistance welding controller to control the welding current, which can effectively control after welding parts of total length; 。 Same with added black, I mean is: in the base hole system of clearance fit, the bearing fit to transition fit, in a base hole system transition fit, the bearing cooperate to achieve interference fit, or is a big gap smaller, bigger than surplus.