B G SPIRAL BEVEL GEARBOXES - Brown Europe Ltd

B GSPIRAL BEVEL GEARBOXESBG SPIRAL BEVEL GEARBOXES1

B GSPIRAL BEVEL Spiral bevel gearboxes BG incorporate the most modern advances in bevelgearbox design and construction.Before delivery, the gearbox will be filled with the necesary lubricant. Forinput speeds up to 1000 rpm the gearboxes will be grease lubircated, for higherspeeds or on request oil lubrication is available. In this case the gearboxes willbe supplied with a filler/breather plug, level indicator and drain plug.These gearboxes offer an extensive range of ratios together with an excellentpower to size relationship as well as low noise levels even at high speedoperation.CONSTRUCTION FEATURESFEATURES-For high speed and/or high ambient temperature it may be necessary to applyexternal cooling. Please consult our technical department.The gearbox which is made in case iron, is of cuboid design withall external faces machined and threaded fixing postions on eachface (usable depth of threaded hole twice the diameter).-RECOMMENDED LUBRICANTThe input and output covers and housing are supplied with twolocation spigot diameters (h7) together with threaded fixing holes(except size BG 75) for possible co-axial fixing.-The alloy steel spiral bevel gears are cut in the GLEASON system,case hardened, tempered and lapped to the exact mountingposition. Input and output shafts are manufactured in hardenedand tempered steel with all surfaces ground.-Input and output shaft tolerance (j6). Hollow shaft tolerance (H7).-All shafts supplied with threaded end to UNI 3221 - DIN 332.-Keyways to UNI 6604 - DIN 6885.Motorised Spiral Bevel Gearboxes, Reversing Spiral Bevel Gearboxes andDis-engaging Spiral Bevel Gearboxes are usually oil lubricated.MobilMOBILUX EP 004 (Mineral Grease)MobilMOBILGEAR 630 (Mineral Oil)The above lubricants are suitable for operation at normal ambienttemperatures -5 deg.C to 40 deg. C. For extreme conditions alternativelubricants are available, these conditions must be specified at time ofordering.MAINTENANCEIt is recommended that the oil is changed after the first 500 hours and then afterevery 3000 operating hours.On request and dependent upon speed type BG spiral bevel gearboxes may beassembled with minimum backlash.QUANTITY OF LUBRICANTDue to the quality of the gears and machining tolerances and overall efficiencyof between 94% and 97% can be expected.The quantity of lubricant (litres) for each unit size are as shown below:BG12BG19BG24BG32BG38BG42BG55BG75Grease The modular construction of BG spiral bevel gearboxes permits up to six input/output shafts (except ratio 1:1).SizeINSTALLATION & MAINTENANCEINSTALLALLAask for:0.1Quantities refer to units type A, ratio 1:1B G INFORMATION BOOKLETORDER CODESPIRAL BEVEL LSEMBLYRATIOSPIRAL BEVEL GEARBOXES WITH IEC MOTOR FLANGE ADAPTOR2BG19MA2:1IEC YRATIOMOTORINPUT

B GSPIRAL BEVEL GEARBOXESTECHNICAL INFORMATIONLUBRICATIONUBRICATIONThermal Factor KrThe selections assume the following conditions:LifePrime MoverShock FactorShaft RotationRunning timeStart FactorAmbient ConditionsAltitudeThe thermal rating is that power that can be applied at the input of the bevelgearboxes, working continuously at an ambient temperature of 20 deg.C, suchas to maintain the lubrication temperature under 100 deg.C.20,000 hoursElectric MotorUniform Load (1)One direction8 hours per day1 start per hourTemperature 20 deg.C 1,000 metres above sea levelMaximum Thermal Input kW KTSizeKT KWDuty Factor K1When working conditions are different from those above, duty factors must beconsidered.K1 fr . fL. fBfr24181284211.251.181.110.90.80.7Theoretical Life 50.8Shock Factor fBBG3810162800200062800 2800BG42 BG55 BG752035602000 1500 1000When conditions are different from those above it will be necessary to considerthe following factors:Temp o 1.21.41.61.8% RunningTime FactorfDThermal rating KT should be multiplied by the above factors to obtaint he actualthermal rating KT ACTUAL.No. of Starts per e Shock11.41.82.22.73.21.41.82.22.73.23.8Heavy ShockInput rpm 28003BG32Running Time Factor fDLife Factor fL (Hours)1.31.5BG19 BG24Ambient TTemperatureemperature FFactoractor fARunning Time Factor frHours/DayBG12KT ACTUAL KT x fA x fDWhen the continuous absorbed rating in the bevel gearbox (KT ACTUAL) is overthe actual thermal rating (KT), excess heat must be removed by artificialcooling.The required output torque Mreq will be multiplied for the above mentionedfactors to obtain the value of torque M2 used to select a spiral bevel gearboxof the correct size.M2 Mreq x K13

B GSPIRAL BEVEL GEARBOXESINPUT AND OUTPUT SHAFT LOADSRADIAL LOADS (N)Input Speed 1500 rpmInput ShafShaftt PPrr.Output Shaft PRRatioUNIT 500035000AXIAL LOADS (N)Input Speed 1500 rpmInput Shaft Pa.Taper Roller BearingRollerBall BearingUNIT io3:14:1300450700110017002700500010000All standard units are fitted with ball bearings4Output Shaft 0024004000780016000Ratio3:14:1Ball BearingTaper Roller BearingRollerAll Ratio'sAll 5000700010000220005:145065010001500240040007800

B GSPIRAL BEVEL GEARBOXESASSEMBLY, SHAFT ROTATION & HANDINGASSEMBLY ow Shaftdouble projectionRatio1:1, 2:1, 3:14:1. 5:1Slow Shaftsingle projectionRatio1:1, 2:1, 3:14:1, 5:1Slow Shaftsingle projectionRatio1:1, 2:1, 3:14:1, 5:1Speed IncreaseRatio1:1.51:2Reinforcedslow shaftdouble projectionAssemblyDescriptionBBSBDAHBHRatio1:1, 2:1, 3:14:1, 5:1CSlow Shaftsingle projectionwith bearing housingRatio1:1, 2:1, 3:14:1, 5:1Counter rotatingslow shaftDRRatio1:1, 2:1, 3:14:1, 5:1MSlow Shaft double projection2 fast shafts counter rotatingRatio1:1, 2:1, 3:14:1 5:1Slow Shaft single projection2 fast shafts counter rotatingRatio1:1, 2:1, 3:14:1, 5:1Slow Shaft singe projection2 fast shafts counter rotatingRatio1:1, 2:1, 3:14:1, 5:1HollowSlow ShaftRatio1:1, 2:1, 3:14:1, 5:1Hollow Slow Shaft2 fast shafts counter rotatingRatio1:1, 2:1, 3:14:1, 5:1IECMotor flangeadaptorRatio1:1, 2:1, 3:14:1, 5:190 deg. reversing gear Assembly IOIODOanddis-engaging gear Assembly DORatio1:1, 2:1DXCounter rotatingspeed increaseRatio1:2, 1:3, 1:4, 1:5ICCo-axialreversing gearRatio1:15

B GSPIRAL BEVEL GEARBOXESSELECTIONUNIT SIZEBG 12BG 19BG 24BG 32BG 386InputrpmRATIO 1:1Input OutputkWTorqueNmRATIO 1.5:1Input OutputkWTorqueNmRATIO 2:1Input OutputkWTorqueNmRATIO 3:1Input .542.132.222.05.83.00.6RATIO 4:1Input OutputkWTorqueNmRATIO 5:1Input KgDimensionsPage2.58/126.08/12128/12228/12378/12

B GSPIRAL BEVEL GEARBOXESSELECTIONUNIT SIZEBG 42BG 55BG 75InputrpmRATIO 1:1Input OutputkWTorqueNmRATIO 1.5:1Input OutputkWTorqueNmRATIO 2:1Input OutputkWTorqueNmRATIO 3:1Input OutputkWTorqueNmRATIO 4:1Input OutputkWTorqueNmRATIO 5:1Input 58/12NOTE Shaft Rotation: If the bevel gear unit is to rotate in both directions the above ratings must be decreased by 30%SERIES CONNECTIONWhen spiral bevel gearboxes assembly A or AH are mounted in series, the maximum through torque MT MAX (Nm) mentioned below must not be exceeded.For Assembly A and AH see page 8, 9.SizeMax. through torque MT Max (Nm)BG19 ABG24 ABG32 ABG38 ABG42 ABG55 ABG75 A6012030050070016004000If working conditions are greater than above, assembly AP gearboxes must be used which have larger shaft diameters.For Assembly AP see page 10.SizeMax. through torque MT Max (Nm)BG19 APBG24 APBG32 APBG38 APBG42 APBG55 APBG75 AP120300500700100030006500MT MAX7

B GSPIRAL BEVEL GEARBOXESDIMENSIONS SOLID INPUT AND OUTPUT SHAFTASSEMBLYAASSEMBLSEMBLYA,, AS & ADRATIO 1:1, 2:1 & 3:1See Page 5 for assembly options* On BG12 the holes 'S' at centres 'a' are only available on the sidesMOUNTING DIMENSIONSUNIT L DIMENSIONSSHAFT 14M16ASSEMBLYAASSEMBLSEMBLYA,, AS & ADRATIO 4:1 & 5:1See Page 5 for assembly optionsOther dimensions as aboveGENERAL DIMENSIONSUnit SizeBGBGBGBGBGBGBGBG812.19.24.32.38.42.55.75.INPUT SHAFT DIMENSIONSOUTPUT SHAFT 59.079.5681010121622M6M8M10M12M12M14M16

B GSPIRAL BEVEL GEARBOXESDIMENSIONS HOLLOW OUTPUT SHAFTASSEMBLY AHASSEMBLSEMBLYRATIO 1:1, 2:1 & 3:1MOUNTING DIMENSIONSUNIT 55.AH75.AHINPUT SHAFT DIMENSIONSGENERAL M10M12M12M14M16HOLLOW 521.827.335.341.345.359.379.9681010121622ASSEMBLY AHASSEMBLSEMBLYRATIO 4:1 & 5:1Other dimensions as aboveINPUT SHAFT DIMENSIONSGENERAL DIMENSIONSHOLLOW SHAFT DIMENSIONSUNIT SIZEi2qd1l2l3t1u1z1DdHtHuHBG 12.AHBH 19.AHBG 24.AHBG 32.AHBG 38.AHBG 42.AHBG 55.AHBG 79.96810101216229

B GSPIRAL BEVEL GEARBOXESDIMENSIONS - REINFORCED THROUGH SHAFTASSEMBLY APASSEMBLSEMBLYRATIO 1:1, 2:1 & 3:1Other dimensions as Type A page 8Unit 55.AP75.APOUTPUT SHAFT DIMENSIONSINPUT SHAFT DIMENSIONSGENERAL 6ASSEMBLY APASSEMBLSEMBLYRATIO 4:1 & 5:1Other dimensions as aboveGENERAL DIMENSIONSINPUT SHAFT DIMENSIONSOUTPUT SHAFT DIMENSIONSUnit 5.AP75.APUse Assembly 'AP' to transmit a greater through torque than Assembly 'A' see page 710

B GSPIRAL BEVEL GEARBOXESDIMENSIONSASSEMBLY AX - SPEED INCREASINGASSEMBLSEMBLYGENERAL DIMENSIONSUNIT X38.AX42.AX42.AX55.AX55.AX75.AXR AT I :1.51:2OUTPUT SHAFT DIMENSIONSINPUT SHAFT 016M5M6M8M6M10M12M10M12M12M14MOUNTING BASE - FC (MALE SPIGOT)FP (FEMALE SPIGOT)Note: Mounting Base FP maybe supplied with female spigot 'b4' leaving dimension 'm' unchangedGENERAL DIMENSIONSUNIT 75.11

B GSPIRAL BEVEL GEARBOXESMOTOR INPUT HOUSINGSASSEMBLY MAASSEMBLSEMBLYFor hollow and other shaft configurations refer to standard drawingsMOTOR INPUT B5UNIT SIZERATIOo1IECa2b2dH1e2MOTOR INPUT B5MOTOR INPUT B5s2IECa2b2dH1e2s271/B141057014859IECa2b2dH1e2s2BG 12.MA1:12:13:1906314095111159BG 19.MABG M8BG 24.MABG 5M10BG 32.MABG 18028215M12BG 38.MABG 13230023038265M12BG 42.MABG 42.MABG 25042300M165:1200200200BG 55.MABG 6035025042300M16123:14:12:1100/112

B GSPIRAL BEVEL GEARBOXESMOTORISED ASSEMBLY OPTIONSASSEMBLY MASASSEMBLSEMBLYASSEMBLY MADASSEMBLSEMBLYASSEMBLY MBASSEMBLSEMBLYASSEMBLY MBSASSEMBLSEMBLYASSEMBLY MACASSEMBLSEMBLYASSEMBLY MBDASSEMBLSEMBLYSEMBLY MBHASASSEMBLSEMBLYASSEMBLY MDRASSEMBLSEMBLYASSEMBLY MAHASSEMBLSEMBLY13

B GSPIRAL BEVEL GEARBOXESREVERSING SPIRAL BEVEL GEARBOXES90 DEG REVERSING SPIRAL BEVEL GEARBOXES - DESIGN IOASSEMBLYAASSEMBLSEMBLYASSEMBLYDASSEMBLSEMBLY90 deg. reversing spiral bevel gearboxes are available with ratio 1:1 and 2:1 onlyonly. by moving the control lever from fully engaged through neutral to fullyengaged in the opposite direction, the 90 deg. shaft will change rotation.Operation of the levermally carried out by hand may only be done when the unit is stationarlever,, which is nornormallycarriedstationaryy.Engaging position is usually indifferent, and reversing spiral bevel gearbox is called FP (full position).On request may be supplied with option SP (single Position) and is possibly only one engaging position on 360 deg.Reversing bevel gearboxes are produced insizes BG32, BG42, BG55 onlyonly.Selection corresponds to inputkW and output torque as pages 6/7 reduced by 30%.Dimensions and mounting positions are the same as Assembly A (page 8) and Assembly DR.CO-AXIAL REVERSING SPIRAL BEVEL GEARBOXES - DESIGN ICASSEMBLYDASSEMBLSEMBLYCo-axial spiral bevel gearboxes are available in ratio 1:1 onlyonly.By moving the control lever from fully engaged through neutral to fully engaged in the opposite direciton the co-axial shaft will change rotation.On request co-axial reversing spiral bevel gearboxes may be supplied with a third projection shaft at 90 deg.Operation of the levermally carried out by hand, may only be done when the unit is stationarlever,, which is nornormallycarriedstationaryy.Co-axial reversing bevel gearboxes are produced in sizes BG32, BG42, BG55 onlyonly.Selection corresponds to input kW and output torque as pages 6/7 reduced by 30%.Dimensions and mounting positions are the same as Assembly DR.14