MachineLife provides condition assessments on roller circles (slew bearings) using three standard services: a center of gravity test, a roller load test, and a rail spall test:
- Center of gravity test – identify roller circle support structure (circumferential diaphram) stresses (in PSI or MPa), rail path flatness issues, center of gravity positions, ballast issues, and projections of center of gravity positions during operation and machine relocations.
- Roller load test – identify roller forces (in lbs or kg), and mesh geometry issues of the diaphragms, rails, rail paths, and rollers. Project the remaining useful roller circle component life.
- Rail spall test – identify rail spalling, circularity issues (between revolving frame and tub rails), roller thrust, rail joint stack height differences, and rail surface condition issues.
Many issues identified during the center of gravity, roller load, or rail spall test can be mitigated to extend the life of the existing components, without having to re-machine the entire rail pad, or purchase new roller circle components (rails & rollers).
Regardless of which scope of work is selected MachineLife will inform on what areas are problematic and provide recommendations to mitigate them to optimize the component life.
