Machining

CAD/CAM controlled machining of the cast propellers, P brackets and rudders are undertaken to the fine tolerances of their original design, which ensures that the finished components perform as predicted.

Videos

Strategy 

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.

 

Personnel

  • 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.

 

Programming 

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.

  • Bearings

    Suitable bearings are required in stern tube and rudder tube assemblies.

  • CJR Propellers

    Every boat is different and the first sign of this difference can be seen in propeller operation.

  • Couplings

    Couplings are the elements that transfer torque from gearbox to the shaft and because of their role they are under strict supervision of class societies.

  • Ducted Propellers / Nozzles

    CJR can offer ducted propellers systems including any type nozzles and impellers under full IACS approval.

  • Rudder Tubes Assemblies

    CJR manufactures rudder tube assemblies designed for hull trough installation to suit stock diameter from 30mm up to 180mm.

  • Rudders

    Rudder profile and sections are carefully selected to specific regime of the flow around sterngear.

  • Shaft Brackets

    Our shaft brackets are designed bespoke to achieve optimum performance in line with every vessel individual requirements.

  • Shaft Seals

    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

  • Shafts

    Shaft design starts from designing entire shaftline incorporating all the components from the propeller to the gearbox and including the bearings to make the system safe, vibration free and efficient in operation.

  • Stern Tubes / Shaft Logs Assemblies

    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

  • Tie Bars

    Tie bars connect both rudder tillers on twin rudder boats to simply synchronise them together.

  • Tillers

    Tiller is important part of steering gear which design is covered by strict rules of classification societies when the boat is built under class.

  • Shaft Alignment

    Using laser technology and precision engineering a bespoke shaft alignment tool has been developed to aid the boat builder’s task of accurately fitting and aligning the stern gear.

  • PropSmith

    For the fast, simple and precise installation and removal of propellers, PropSmith is the professionals’ choice.

  • TrialDAS

    TrialDAS is a new data acquisition system specifically tailored for monitoring sea trials. The system is based on rate gyros, GPS, accelerometers and magnetic field sensors to record every movement of the boat.

  • Keyless Hub Hydraulic Kit

    Quick and convenient method of pushing and releasing large propellers or couplings to and from the keyless shaft cone.

  • Hydraulic Propeller / Coupling Pusher / Puller

    Quick and convenient method of pushing and pulling propellers or couplings to and from keyed shaft end.

  • TrialsAPP

  • Quality Policy

    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

  • Design

    We don’t only make propellers, we analyse entire propulsion system of each boat starting from hull resistance prediction and hull propulsive factors.

  • Pattern Making

    Precise pattern assures high accuracy of final product and it is one of the most important stages in manufacturing process

  • Casting

    CJR's foundry team has the combined benefits of over 150 years experience in the industry.

  • Machining

    CAD/CAM controlled machining of the cast propellers, P brackets and rudders are undertaken to the fine tolerances of their original design

  • Finishing

    Our processes ensure that the geometry of our finished castings is always true and accurate to the original design.

GET IN TOUCH

Contact Us
  1. *Please type your full name.
  2. Please type your company name.
  3. *Invalid email address.
  1. Please type a message (no more than 200 characters)

CJR Propulsion Ltd
70-72 Quayside Road
Bitterne Manor
Southampton
SO18 1AD
United Kingdom

Tel: +44 (0)23 8022 2032
Fax: +44 (0)23 8021 1832

info@cjrprop.com