Stripped Thread Repairs – Drilling & Reaming Thread Repair Services

Crankshafts are often subjected to increased hardness and bending (runout) due to high heat exposure and rapid cooling following a failure. This process frequently leads to conditions that exceed OEM tolerance limits, resulting in significant stress on the component.

At Royce Onsite Machining, we employ specialised ceramic blankets to carry out controlled crankpin annealing—a precise heat treatment method aimed at decreasing both hardness and runout. When used alongside our advanced precision machining services, this technique effectively restores crankshafts to meet OEM specifications.

Our annealing process can lower crankpin hardness by up to 300 HB, effectively mitigating harmful excess hardness and considerably enhancing the longevity of your crankshaft.

Operating successfully within the mining, mineral processing, and heavy machinery industries presents numerous challenges. Tight maintenance budgets, rigorous production schedules, and limited access to skilled labour can all lead to unexpected downtime and diminished productivity.

To remain competitive, mining facilities require a reliable engineering partner capable of providing swift, efficient, and effective repair and maintenance services. Here at Royce Onsite Machining, we are committed to meeting those needs.

Royce Onsite Machining was engaged by Melita Marine Group to perform a precise in-situ repair on a historic vessel after a propeller failure. This incident resulted in extensive damage to the taper journal on the propeller shaft, a crucial component that necessitated accurate restoration to prevent the costly requirement of a complete shaft replacement. Our expert onsite machining services ensure that we can effectively address such challenges, preserving the integrity of historic vessels while minimising downtime and repair costs.