Line boring Machining

Overview

Royce Onsite Machining was called to Asia to repair a large engine exhibiting fretting damage to main bearing pocket No. 8 and misalignment beyond OEM tolerances. Our team delivered a full on-site laser alignment and machining solution — all without removing the engine. 

Scope of Work 

• Laser alignment and dimensional inspection 
• Milling of main bearing horizontal faces (1 mm material removal) 
• Line boring of pocket No. 8 to oversize 
• Refurbishment of two main bearing caps 

Key Details 

• Custom milling machine with electronic sensors for precision 
• Flatness maintained at 99%, parallelism within 0.02 mm 
• Bore alignment within 0.04 mm, final diameter 303 mm +0.03 mm 

Outcome

The repairs restored engine alignment to OEM standards. The client was highly satisfied and has since commissioned us for three additional engines.