The Ultimate Maintenance Guide for Your Kelly Bar
The Ultimate Maintenance Guide for Your Kelly Bar
Vigorlink suggested you need to make the following as below
Kelly Bar Maintenance Checklist at a Glance
|
Frequency |
Key Actions |
Tool/Method Needed |
|
Daily |
Visual inspection for major damage; Clean & lubricate threads |
Wire brush, anti-seize compound |
|
Weekly |
Check straightness & flutes; Detailed thread audit; Grease fittings |
Caliper, straight edge, grease gun |
|
Monthly/Pre-Project |
Measure wall thickness (UT); Check for micro-cracks (MPI); Verify torques |
Ultrasonic thickness gauge, NDT kits, torque wrench |
|
As-Needed |
Repair damaged threads; Reface worn driving flats; Replace sections |
Machining workshop, OEM spare parts |
Common Problems & Corrective Actions
· Thread Galling/Seizing: Almost always caused by improper cleaning or lubrication. If seized, do not force it. Use penetrating oil and specialized thread repair tools. Prevention is key.
· Excessive Wear on One Side: This usually indicates a bent bar or misalignment with the drill drive. Check straightness and equipment alignment.
· Cracks: Immediately stop using the bar. Cracks propagate and can lead to sudden, dangerous failure. Professional welding repair by a certified technician is required, following OEM guidelines.
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