Urban construction cranes operate under heavy mechanical loads and face exposure to dust, vibration, and fluctuating weather. A major contractor experienced frequent grease leaks and bearing failures on their tower cranes, risking costly delays on high-rise builds.

Case Background

The cranes’ turntable bearings were losing lubrication due to inadequate sealing. Bearings degraded rapidly, requiring bi-monthly servicing and causing height operation restrictions during windy days.

COMBI Seal Upgrade

After on-site analysis, COMBI engineers recommended a high-pressure, multi-lip sealing ring reinforced with anti-vibration dampers. Materials were selected for thermal and mechanical resilience suited to high-frequency load shifts.

Performance Gains

Post-installation, seal integrity lasted over 16 months without leakage. Bearing life improved by over 40%, while service frequency dropped from six times to twice a year. Equipment uptime significantly improved, keeping construction schedules on track.

Customer Review

The site operations manager said: “The difference was immediate. No more emergency grease top-ups, no more weekend repairs. COMBI seals keep our cranes operating reliably, which is critical in our timeline-driven business.”

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SEO Description: Discover how COMBI’s sealing technology helped prevent grease leakage and extend bearing life in high-load construction cranes, enhancing uptime and project delivery in demanding urban conditions.