Contact us

Owlesbury Crankshaft Service
Unit 12 Winnall Valley Road
SO23 0LD

Telephone : 01962 855969
Fax : 01962 856969

Email :


OCS are probably best know for crankshaft grinding ranging from lawnmower engines right up to steam engines and the largest marine crankshafts and anything in between for commercial and non commercial use. We also offer an ultra performance, motorsport quality machining for crankshafts, this quality is applied to all the work undertaken at OCS. Crankshafts are polished after grinding in order to achieve the exact specifications and surface finish.

Our crankshaft services include:

  • Crankshaft grinding
    We can remanufacture main and big ends to take undersize bearings
  • Crankshaft polishing
    All crankshafts are polished after grinding to ensure the finish is to the highest standard and any imperfections removed.
  • Crankshaft crack testing
    We crack test all crankshafts before grinding to identify any damage to determine repair or replacement.
  • Crankshaft straightening
    We can also straighten crankshafts to remove any distortion after an engine failure or internal damage.
  • Crankshaft balancing
    We offer a full engine balance service and can provide a before and after print out to demonstrate the improvement.
  • Diamond Refacing
    We regrind the flywheel to remove and distortion or surface damage from the face using a diamond headed cutter.