Cellular manufacturing based on lean manufacturing principles provides Flexible work cells that can not only deliver our standard range of product through quick changeover, but can also adapt to accommodate a whole range of customer bespoke designs. Our products are manufactured within distinct product cells:

  • Shaft Cell, Rudder cell, P bracket Cell, Coupling Cell, Propeller machining & Finishing cell, Robot Finishing Cell, general Turned & Milled component Cell

Having already investedheavily in state of the art multi-tasking, CNC machine tools, (well over £3M to date) we are in the enviable position of being able to offer our customers high quality Stern gear components and systems, at the right cost and lead time.

  • Utilizing state of the art machinery that allows single set-up manufacture provides the key to our “Done-in-one” manufacturing philosophy.
  • This equipment allows precision parts to be manufactured throughout the full size range of Sterngear components that we produce.


CNC tool-path programs are produced by combining the best from two different programming philosophies: Online & Offline programming.

  • Online programming performed at the machine, using operator friendly conversational control systems that deliver medium complexity parts with fast turn-around for manufacture.
  • Offline PC based programming & verification software is used for the generation part programs for complex surfaces, such as those used for propeller blade machining, where simultaneous 5 axis movements are required.

Manufacturing material supply is driven and pulled by both, MRP and Vendor supplied Kanban.


  • We have a team of experienced manufacturing professionals who provide the engineering support and “know how” to design, manufacturing and customer support; drawing on skills and experience gained not only within the marine, but also other industry sectors such as Automotive, Aerospace, Mould and Die.
  • Highly Skilled CNC machine personnel who can get the best from the machines, but just as import is that they really know the product they produce and take a personal pride in what they produce.

Get in Touch

CJR combines decades of experience with continuous investment in the latest technology and engineering prowess. Just drop us a note to find out more about how we can help you.