Screw pump maintenance technical standards are as follows: 1, various parts of the screw pump with the gap shown in Table 1--1; 2, the alignment error is 0.05 ~ 0.10mm; 3, seal leakage does not exceed 10 drops per second. Table 1--1 Screw Gap Clearance Item Reference Data Screw Tip and Housing Clearance / mm Screw Clearance between Tip and Dedendum / mm Normal Section Clearance / mm GEAR Outer Side and Gland Clearance / mm Rolling and shaft mating Rolling and housing mating 0.14 ~ 0.33 0.14 ~ 0.33 0.12 ~ 0.25 0.02 ~ 0.06 H7 / k6 H7 / h6
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