72-Hour Emergency Repair for Paper Mill Drive Shafts
A cultural paper mill in Shandong Province
Six worn dryer-section drive shafts overhauled, re-balanced and back in service within 72 hours — at about 40% of the cost of new replacements.
EquipmentPaper machine dryer section
Service scopeOverhaul + cross kits + balancing
Quantity6 shafts
Turnaround72 hours, round-the-clock
Warranty12 months
Year2024
Customer Background
The dryer section of the mill's main paper machine had been running with heavily worn cross-shaft couplings. Vibration kept rising, sheet breaks became more frequent, and every extra hour of instability cost the plant finished-paper output.
The Challenge
The original manufacturer quoted six weeks for new couplings — far beyond what the plant could accept
A full stop of the only high-speed machine had to be planned at short notice
The plant needed a warrantied repair, not a patch
Our Solution
Shafts collected from site, fully disassembled and inspected the same evening
Cross assemblies and bearings replaced with hardened alloy kits; flange faces re-machined
Each shaft re-balanced after reassembly; seals and greasing points renewed
Reinstalled and laser-aligned by our fitters, working in shifts around the clock
The Results
All six shafts returned to service within 72 hours of removal. Vibration returned to normal levels immediately after start-up, and the dryer section has run stably for over 18 months since. The repair cost came to roughly 40% of new replacement couplings.
