Maintenance standard of ball mill:
1. The processing surface on the two bearing bases is on the same horizontal plane, and the center spacing allowance is 1mm, the longitudinal center line non-parallelism deviation is 0.5mm, and the transverse center line deviation is 0.5mm per meter.
2, tile seat spherical contact surface should be connected to the Angle of uniformity; No less than 1-2 points per 50×50mm2; The contact surface between the hollow shaft and the tile shall be 90° - 100° no less than 2 points per square inch, and the clearance between the journal and the two sides of the bearing shall be approximately the same.
3. The mating surface of the ball mill cylinder flange and the front end cover should ensure good contact, no gaskets are allowed, and the coaxiality tolerance of the two hollow shafts is less than 0.8mm. Large gear ring and cylinder end cover in connection with the assembly correction, should be firmly thrust, good positioning pin, the radial swing of the gear ring is not greater than 0.5mm, the axial swing is not greater than 0.84mm.
4, the ball mill liner plate should be installed according to the end cover, the barrel liner should start from the population, according to the assembly requirements, the screws should be evenly tightened, no water leakage. Rubber lining board shall not have gaps, gaps should be blocked with sponge.
5, the center line of the pinion gear and the center line of the big gear to be parallel, its deviation per meter is not more than 0.2mm. The top clearance is 1/4 modulus, the side clearance is 1.06 ~ 1.8mm, the contact area of the ball mill tooth surface is not less than 50% of the tooth length and 40% of the tooth height
6, reducer, motor and transmission shaft of the transmission coupling should maintain a high coaxiality, the center line is not more than 0.3mm, the center line inclination is less than 1/1000.
Main wear scrap standard:
1. Bearing wear is greater than 1/3 of its thickness.
2. Pinion surface wear should not be greater than 30% of the tooth thickness, large ring tooth surface wear greater than 25% of the tooth thickness, can be used on the reverse surface, grinding to 1/2 should be scrapped.
3, tooth ring rim distortion deformation should not be greater than 7.5mm.
4. When grooves and markings are generated on the outer surface of the hollow shaft or local wear on the inner surface of the hollow shaft causes deformation and cracks, etc., the hollow shaft should be replaced.