Installation precautions:
1. Take particular care to avoid mechanical installation misalignment (Figure 3 in the original material).
1) Tighten the gland after aligning the coupling. Tighten bolts evenly to avoid tilting the gland face. Check each point with a feeler gauge; the stated maximum error is 0.05 mm.
2) Check clearance and concentricity between the gland and the shaft or sleeve. The clearance should be uniform around the circumference, with a stated maximum variation of 0.01 mm when checked with a feeler gauge.
2. Spring compression must follow the specified requirement and must not be excessive or insufficient. The original text states an error of 2.00 mm. Excessive compression increases face pressure and wear; insufficient compression can prevent effective sealing.
3. After fitting the rotating ring, ensure that it can move freely along the shaft and return automatically when pressed against the spring.