Regarding the maintenance cycle for expansion sleeves, based on technical specifications and practical application experience found in search results, the following is a summary:
Daily Inspection and Lubrication Maintenance
Lubrication Cycle
Post-Break-in Inspection: Newly installed expansion sleeves require initial lubrication inspection and adjustment after the break-in period (approximately 500 hours of operation).16
Regular Lubrication: Grease should be added to lubrication points every shift (8-12 hours) to ensure effective lubrication of the bearing and sleeve contact surfaces.1613
Oil Change Cycle: It is recommended to completely change the lubricating oil every six months and check its cleanliness.1316
Tightening Inspection
Bolt Preload: Check the tightness of the expansion sleeve bolts weekly to ensure the preload meets the design value (refer to bolt torque standards).1218
Sealing Inspection: Check the integrity of the seals monthly to prevent oil leakage and impurity intrusion.1620
Comprehensive Maintenance Cycle
Preventive Maintenance
Every 3 months: Thoroughly clean the expansion sleeve, removing surface oil and metal shavings. Inspect the inner and outer sleeves for wear, cracks, or rust (1216).
Every 6 months:
Check the fit clearance between the expansion sleeve and the shaft/hub. If insufficient interference fit is caused by wear, adjust or replace (1218).
Disassemble the expansion sleeve and inspect the wear of components such as rolling bearings and torsion springs. Replace (1316) if necessary.
