Split Roller Bearing Applications

Split roller bearing applications

Industry matrixApplicationsBuildingmaterialBulkCementFood andterminales andbeverageaggregateForestproductsGrainIron andsteelMarineMiningPowerPulp andandgeneration paperprocessingPage 33Page ical handlingContinuous slabcasting machinesConveyorsCooling bedsElevatorsLine shaftsLog decks and tablesOverhead cranesScrew conveyorStacker reclaimersPage 27Page 6/7Page 13Page 29Page 10Page 17Page 6/7Page 16Page 32Winding gearWindersHaulage gear and winchesPage 19Page 19/28Process equipmentBall mill trunnionsBall mill drivesCane knives and beetslicersCarriers and feedersCrushersDrum processorDryer rollsKiln and mill under rollersKiln and tube mill drivesMill drivesMixers and agitatorsPress rollsReciprocating screensRotating drumsShreddersSugar diffuser drivesSugar diffuser underrollersWashersPage 22Page 26Page 4/5/34Page 4/5Page 4/5Page 4/5Page 9Page 9Page 23Page 6Page 18Page 16Page 28Page 22Page 23Page 23Page 22Ancillary equipmentCrankchaftFans and blowersGearboxesHeat exchangersMotors and generator setsPump and pump drivesPage 14/15Page 24Page 14Page 17Page 26/34Page 25Other applicationsHydro turbinesMarine propulsion shaftsWater screensWind turbinesPage 31Page 20/21Denotes successfull SKF Cooper application. Please refer to page number shown for photograph.2Page 30

SKF CooperapplicationsA world of industry-wide experienceThis publication gives an overview into the variety of applications and versatility of SKF Cooper split roller bearings.SKF Cooper bearings has been at the forefront of split roller bearing technology since 1894 and SKF Cooper bearingscan been seen around the world in a multitude of industries and applications. The Industry Matrix shown oppositeshows typical applications in some of these industries. A brief explanation of SKF Cooper nomenclature is showninside the back cover.For more information, please contact your local SKF branch/sales unit.In some instances, machinery guards have been removed for photographic purposes.3

Ball millsFigure 1Figure 101 BCP 1016 mm EXILOG GR fitted to a10 feet diameter silica mill.Figures 2 and 3A 28” EXILOG and GR bearing fitted to aFrench aluminates ball mill. Speed is26 r/min and each bearing is carrying15 tonnes (147 kN).Figure 4Cement plant in the UK using SKFCooper 280 mm bearing on the trunnion shaft.Figures 5 and 6South African plant using SKF Cooper03BCP 320 mm on this ball mill.In addition to these illustrations andnumerous UK applications, SKF Cooperbearings are also used on ball mills in:Egypt, Greece, Ireland, USA and Turkey.Sizes range from 01 BCP 300 mm EXand GR to 01 BCP 950 mm EXILOG GR.4Figure 2Figure 3

Figure 5Figure 4Figure 65

Cement industryFigure 1Figure 1Cement kiln using 10 inch 03 Serieswith roller thrust bearings in thecartridge end plates which support theunder rollers on the kiln. The radial loadis 28 tonnes, the axial load 10 tonnesand the speed is 4–5 r/min.Figure 2Roller thrust bearings 10 inch 03 SeriesFigure 3Figure 2Figure 3SKF Cooper 01BH80mm EX hangerbearing in use on a gypsum productsscrew conveyor. This application alsouses a 90 mm version of the hangerbearing.Figure 4Detail of a cement works clinker breakershowing a SKF Cooper 03BCP180 mmGR. This machine also uses03BCP180 mm EX expansion bearings.Figure 46

Figure #Proven sealing capabilitySKF Cooper bearings are proven tooperate effectively in hostile and abrasive conditions.These illustrations show SKF Cooperbearings covered in cement dust. NonSKF Cooper bearings would likely failprematurely in these operatingconditionsExternal alignment ensures 360 concentricity at all times, eliminating contamination and increasing bearing life.SKF offers a choice of seals to suit various applications and requirements. Fulldetails are shown in our productcatalogue.Environmental commentSKF Cooper has no control over customer product usage or operating conditions. These images show the extremeworking conditions in which SKF Cooperbearings are able to operate effectivelyand return optimum performance.7

Chemical industryDrying cylindersA customer had major concerns withhigh maintenance costs of their installedsleeve bearings. Grease-lubricated 01BCP 180 mm EX (gunmetal cage and C5clearance) and GR bearings (C3 clearance) with high-temperature packingseals (HTP) were seen as the ideal solution to redeem this.The SKF Cooper bearings were made tospecial dimensions to match the footprint of the sleeve bearings.By changing from sleeve bearings toSKF Cooper split roller bearings fitted tothe drying cylinder support rollers, thecustomer’s maintenance time andmaintenance overhead costs have beenreduced. The customer has also benefited from power savings.The SKF Cooper bearings are completely accessible in place. The split feature of the bearings permits access forinspection or maintenance without having to move any adjacent motors orgearboxes.The figure top left shows the drying cylinder with the sleeve bearing in placeprior to conversion.The conversion to SKF Cooper bearingsand SKF seals is shown bottom left.8

Sugar industryFigures 1 and 2Figure 1This South African sugar mill is fittedwith SKF Cooper bearings of many typesand sizes.Figure 3The cane knives are fitted with 03 BCP200 mm EX (expansion) and GR (fixed)bearings.Figure 2Figure 39

Conveyor bearingsFigure 1Figure 1Figures 1 and 2This German bucket elevator uses SKFCooper 01 BCP 160 mm GR in trappedpositions. The advantages of SKFCooper split shaft bearings is easily seenin these figures.Figure 3Figure 3This kaolin screw conveyor is fitted with01 BH 60 mm EX bearing and usesautomatic lubrication. The hanger bearing has a double heavy duty lip seal toretain the lubrication and keep out thekaolin.Figures 4 and 5A German chalk extraction conveyoroperates in dusty, dirty and moistconditions which caused the motor andgearbox to be firmly stuck to the shaft.The main conveyor bearing failedrequiring immediate replacement.Figure 410Figure 5The exisiting 150 mm bearing wasreplaced with a SKF Cooper 01 BCP150 mm GR SRS. The split rubber sealwas specified to combat the moist environmental conditions.

Figure 1Figure 1SKF Cooper 01 BH 80 mm EX hangerbearing in use on a gypsum productsscrew conveyor. This application alsouses a 90 mm version of the hangerbearing.Figure 2Over 480 SKF Cooper bearings up to 13inch shaft size are fitted to this rawmaterial conveyor.Figure 3Take up housing (tension type) fitted to araw materials conveyor at an aggregatedepot uses a SKF Cooper 01E 80 mmEX (expansion) and GR (fixed) bearings.Figure 2Figure 311

Conveyor bearingsWater collected in the tail drum pit andentered the tail drum bearings. As aresult, the SNL 515–612 bearing fittedto the 100 mm shaft failed every 2-3months.To rectify the problem, SKF recommended a BCP 100 mm GR (fixed) andEX (expansion) bearings.The water penetration problem wassolved by using an SKF Cooper SRS sealwhich is suitable for wet but not submerged applications. The SRS seal isavailable in high and low temperatureversions (–20 to 100 C).The bearings are lubricated to SKFspecifications and have provided continuous operation for over a year (at timeof printing) with no problems.12

Figure 1Figure 101 BCTT 150 mm (take-up tension type)housings used on a sugar mill.Figure 2A conveyor pulley for an iron ore producer, equipped with sealed 231 Series380 mm shaft spherical roller bearings.Supporting the customer with quick andeasy in situ replacement with little disturbance to the shaft alignment ordriveline. SKF Cooper split sphericalroller bearings offer a solution – reducing mean time to repair (MTTR) by 70%.Figure 3A conveyor headshaft at a steel mill isequipped with SKF Cooper. 8 inch 02Series bearings are used in the trappedand open positions, as well as 3 inch 01Series bearings installed on the secondrollers.Figure 2Figure 313

Fans and blowersFigure 1Figure 1SKF Cooper 01 Series BCP on a Canadian lumber drying kiln.Figure 2A typical power station fan application,in this instance an 02 BCP 100 mmEX/GR TL S1Figure 3Figure 2Figure 3This cement works ventilation fan usesSKF Cooper 02 BCP 900 EX TL S1 and02 BCP 900 GR TL S1.Figures 4 and 5The UK General Motors Paint Shop usesSKF Cooper 01 BCP 75 mm EX and GRbearings for fume extraction bearings.Figure 414Figure 5

Figures 6 and 7Figure 6This boiler fan uses an 02 BCP 200 mmTL and an 02 BCP 160 mm TL on thesame shaft.Figure 8The lubricator-equipped cement industry fan is an 02 BCP 8 in EX TL.Figure 7Figure 815

Grain handlingThe original solid bearings werereplaced with standard SKF Cooper splitshaft bearings in flange housings (BCF)and pedestals (BCP) with slight modifications to the housing seating area tomeet the customer’s specification. Thisreduced the bearing change time from1-2 days to 2-3 hours.The germination tank high humiditylubrication problems were addressed bythe combination of the SKF externalmisalignment feature combined withthe SRS seals which remain in completeconcentricity with the shaft at all times.This keeps out foreign matter and lubrication retention is greatly improvedwhich increases bearing life.16

Figure #The previously fitted SF75/1075/75bearings used on this 600 staggeredbucket elevator had the 75 mm,106 r/min drive shaft bearings fitted intrapped applications behind a 13-1 gearreduction box, which caused immensemaintenance access problems.In order to reduce the customer’s maintenance expense, SKF recommended 01EBCDFN 75 mm EX (expansion) and GR(fixed) bearings.17

Link spindles andpilger millsFigure 1Pilger millsSKF has global experience in pilger millbearings, the smallest is an 01 B 125mm GR fitted to a German pilger mill,the largest application uses SKF Cooper03 500 mm bearings, these examplesare in Germany, India and Japan.Figures 1 and 2A SKF Cooper 01 B 560 mm link spindledrive to a high speed reversing(78 r/min in 2 seconds) rolling mill.The use of 01 Series bearings, doublemounted in one specially manufacturedhousing provided the required loadcapacity while meeting the high speedreversal speed requirements.Figure 3Assembling 01 B 600 mm EX in Finland.SKF Cooper has a proven history of linkspindle applications throughout theworld with spindle support bearingsfrom 280 mm up to 775 mm bearingsFigure 318Figure 2

Mine winders andhaulagessFigures 1, 2 and 3Figure 1Coal industry mine winders include 03Series 600 mm for an operating load of80 tonnes per bearing at 48 r/min and02 Series 400 mm for an operating loadof 32 tonnes per bearing at 31 r/min.Figure 4A 700 mm diameter special doublebearing supplied for a tower mountedwinder in a copper mine. Normal operating load is 185 tonnes and the speedis 54 r/min.Figure 2Figure 3Figure 419

Marine propulsionbearingsFigure 2Figure 1This offshore supply vessel is fitted outwith SKF Cooper 01 BCP 500 EX and 02BCP 500 GR on the propulsion shaft.Figure 2‘Dae A Express’ high speed ferry uses 01BCP 120 mm EX and 01 BCF 120 mmEX on waterjet drives.Figure 3A typical installation of a SKF CooperBCP in a propulsion shaftingapplication.Figure 2Figure 320

Figure 1Figure 1Hoverspeed Super SeaCat is fitted withweight saving aluminium 01 BCAPLA210 mm EX cartridges and pedestals.Figure 201 BCPAPA 440 mm EXILOG bearingsspecified for the Japanese SuperTechnoLiner twin 27 MW gas-turbine drivenwaterjet systems.Figure 3A typical waterjet drive trapped positionutilising a 240 mm BCP EX with feltseals.Figure 3Figure 221