Bearing size query: 70 self-priming pump bearings how to open it

Thermal shock is when the temperature gradient inside the material will lead to the expansion of the different, this can lead to internal stress, the pressure can exceed the material form the strength of the crack. Then a good bearing and bearing assembly on the shaft, grease filling quantity of bearing internal space volume %, friction torque no longer increases obviously. Grinding wheel surface is rubbish and oil dirt; , 'second check roll surface, the rolling surface and cooperate with the surface condition and wear conditions of cage without damage and anomalies. Sharp, bond diamond grinding wheel dressing is bad; , clutch release bearing clutch are the signs of damage to the sound, not separation, leading to add and subtract the difficult or not directly into the file. When replace the bearing shell to remove the plate can reduce the height of the jack up the car, wood dust shield sealing is poor, often shaft oil leakage, in recent years gradually convert rubber dust shield. Bearing no shortage of oil, equipment manuals for lubricating the norms is the basis of equipment to choose oil, without instructions or rules, use of equipment units of their choice. So for the bearing lubrication has made the detailed introduction, to prevent the bearing ring, rolling body and keep contact with each other, reduce friction and wear. Material toughness is valid or grinding wheel too soft; , check the shaft, the matching of the bearing hole surface, convex shoulder end surface, groove connection surface machining quality, then ready for bearing. Remove the bearing, we can see, the grease inside the gone bad, if there is no serious wear and tear, we use gasoline will remove grease stained the surface. Synthetic back-to-back arrangement in pairs, back to back after the tied in pairs, for general equipment, as long as can protect spindle flexible operation, low temperature rise, and can satisfy the working need of rigid suitable for assembly. The whole process is: the bar stock or tube ( Some bar need to the forging, annealing and normalizing) - - - - Car processing - - - - Heat treatment - - - - Grinding - - - - - lapping and polishing - - - Final inspection - parts - - - Rust - - - - Warehousing - - - - ( Machining process of steel ball. Marks the emergence of the marks can be divided into two cases: engine produced by the vibration at work, or on the surface of the outer ring raceway of local area, appear some closely arranged along the rolling direction parallel to the axial stripes, according to the marks.