Orkot Marine Bearings: Engineering Manual - Trelleborg.com.au

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Orkot ® Marine BearingsEngineering Manual for Rudder and Water Lubricated Propeller Shaft BearingsContentsAbout this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2A Global Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Orkot ® Marine Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Management Systems and Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Material Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Service and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5World Wide Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Marine Stock Tube Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Standard Production Capacity Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Contact Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Rudder Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Bearing Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Material Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Housing and Shaft Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Wall Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Bearing Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Bearing Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Machining Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Water Lubricated Stern Tube Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Bearing Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Material Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Shaft Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Multi Groove Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Twin Groove Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Special Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Staves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Water Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Bearing Interference and Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Machining Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Fitting Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Bonding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Machining Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Health and Safety Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Calculation Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231
Orkot ® Marine BearingsEngineering Manual for Rudder and Water Lubricated Propeller Shaft BearingsAbout this ManualThe information in this manual allows the user tocorrectly design Orkot ® Marine Bearings and givesguidance on machining and fitting. It is intended foruse by persons with technical training at their owndiscretion. The design of Orkot ® Marine Bearingsshould take into account the current rules andregulations of the relevant classification society.A Global ApproachOrkot ® Marine Bearings is a world leadingmanufacturer and supplier of bearings to the shippingand marine industries.Supported by an extensive global network ofmanufacturing plants, agents and distributors, Orkot ®Marine Bearings are able to offer the highest levels ofquality of service associated with a leading companywithin the marine industry.Part of the Smiths group of companies, Orkot ® MarineBearings have been active within the Marine andshipping industries for over 25 years.Extensive experience has been gained within theshipbuilding and offshore industries with a widerange of applications on board both merchant andmilitary vessels.Orkot ® Marine BearingsOrkot ® Marine Bearings are manufactured from aunique synthetic composition incorporating solidlubricants for dry running to ensure outstanding wearlife. Virtually no swelling in sea water and very lowthermal coefficient of expansion provide dimensionalstability in arctic and tropical seas. It does not corrodeor promote corrosion of the housing and toleratesboth edge loading and misalignment.Management Systems andClassificationOrkot ® Composites operate a fully integratedmanagement system which incorporates, ISO9000:2000 Quality Management System, ISO14001:1996 Environmental Management Systemand OHSAS 18001:1999 Health and SafetyManagement SystemStrict quality control and testing ensure materialconformance and batch traceability. Routine testing isperformed to simulate the extreme operationalenvironments where the materials are used.Orkot ® Composites hold type approval certification forTLM Marine and TXM Marine grades from the worldsleading classification societies. We can supply fulllisting of the certificates we hold upon request.This listing can also be found on our website:www.orkotmarine.com2
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