Bearings

Suitable bearings are required in stern tube and rudder tube assemblies. A quality bearing can ensure the appropriate life cycle of the parts is achieved. CJR offer a range of bearings from bespoke designs made in house to standard off the shelf sizes.

The products that we can supply include brass shell nitrale inner, phenolic, composite, polyacetal and UHMW.  Our bearing systems are most commonly water lubricated but grease lubricated is also an option when a unit must be sealed due to excessive wear more often found with work boats function in waters containing high levels of debris.

Standard bearings can be screw cut and fitted with flanges if a retaining plate feature is required. Bearings can be standard parts or sourced and supplied as approved products to suit class requirements.

View the embedded image gallery online at:
http://cjrprop.com/products/bearings#sigProGalleriab9b751affc
 

Manufacturing

Bearings and housings can be machined to precision tolerances depending on the customer requirements. Tighter tolerances are often required when the bearing is being press or freeze fitted directly into a housing or bracket.

 

Installation

Typical bearing fitting method is a push fit into housing fitted with grub screws secured with lock tight. For larger shaft diameters bearings can be press fitted into a flanged housing that is then Secured in to the tube or bracket with retaining bolts. This ensures a quality fit and eases the task of servicing. Sufficient lubrication must be in place in line with the products individual functioning requirement.

 

Related Products

Shafts, Rudders, Stern tubes, Rudder tubes, Shaft brackets

  • 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

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  • 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

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  • 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

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  • 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.

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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