1. The clearance between the inner cavity of the shell and both sides of the spiral surface of the shaft screw conveyor shall be the same, and the error value is ± 2mm, and the error value between the bottom end and the clearance is ± 2mm.
2. The clearance between the inner hole of the hanging rolling bearing and the inner surface of the connecting flange plate, when the diameter of the spiral type is ф 150～ ф The gap of 250mm shall not be less than 1.5mm when the diameter of spiral type is ф 300～ ф When 600mm, the gap shall not be less than 2mm.
3. During full load test run, if oil leakage is found in the rolling bearing, the rolling bearing shall be folded down and the tightness of the torsion spring in the sealing ring shall be adjusted until there is no leakage.
4. The suspension rolling bearing of the screw conveyor with shaft shall be installed at the center of the rotating shaft, and the gap between its inner hole and the inner hole of the two screw steel pipe shafts shall exceed 10mm respectively（ ф 150～ ф 400mm) and 20mm（ ф 500～ ф 600 hours).
