skf industrial gearbox 2

8

Numerous discussions with manufac-turers, which preceded the selection ofthe gearboxes shown here, confirmedthat there is a trend towards specialistgearboxes in order to better satisfy,both technically and economically, thedemands of individual applications.However, as often as possible thedesigns use components from stand-ard series – an advantage not leastfrom a logistics point of view.

In the following examples the bear-ings used are listed starting with thosefor the input shaft and following theorder in which they occur in the powertrain. The examples show that bear-ings of standard series are preferredand only a few special bearings areused. The examples also confirm anearlier observation in the section deal-ing with bearing arrangements for gearshafts, namely that virtually all “cata-logue” bearing types are used in gear-boxes. SKF, with its comprehensive

range of technically advanced standardbearings, assists the designer in pro-ducing technically and economicallycompetitive gearboxes.

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8 Application examples

Application examples

In this section various interesting and well-proven gearbox designs from important manu-facturers are presented. In order to give a clearpresentation, the most important technical dataare presented in table form. This has made itpossible to avoid long descriptions. The gear-box drawings will certainly inspire designers.

Bevel/spur

Application Universal (e.g. conveyor drive)

Manufacturer A. Friedr. Flender AG, Bocholt, Germany

Input drive Depending on application

Drive rating P = 53 kW

Drive speed n = 1 500 r/min

Total ratio i = 1 : 63

Power take-off Depending on application: solid, flanged or hollowshaft

Output torque M2 = 23 800 Nm

Dimensions 960 × 580 × 300 mm

Mass G = 635 kg

Gears Case hardened

Lubrication type Oil bath

Lubricant Oil with viscosity to ISO VG 460

Operating temperature Tmax = 90 °C

Sealing Radial shaft seals, or largely wear-free labyrinthseals

BearingsNo. 1 shaft 2 × 32309 BJ2No. 2 shaft 2 × 32310 J2No. 3 shaft 2 × 32314 J2No. 4 shaft 2 × 30224 J2

Minimum bearing life Depending on application

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Bevel/spur, two-stage

Application General industrial

Manufacturer Rossi Motoriduttori, Modena, Italy

Input drive Electric motor



Total reduction i = 10,3 : 1



Mass G = 282 kg

Gears Hardened


Lubricant EP oil with viscosity to ISO VG 220

Operating temperature T = 65 to 80 °C

Sealing Radial shaft seals

BearingsNo. 1 shaft 2 × 32310 BNo. 2 shaft 2 × 32312No. 3 shaft 2 × 32026

Remarks Universal attachment possible; stiff, one-piececasing; standard hollow shaft at output side; choiceof drive shaft arrangement (position)

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Worm, single stage

Application Tilting arrangement

Manufacturer A. Friedr. Flender, Bocholt, Germany

Input drive Electric displaceable anchor motor, V-belts

Drive rating P = 2,3 kW

Drive speed n = 636 r/min


Output drive Hollow shaft, cartridge type

Output torque M2 max = 2 350 Nm


Mass G = 65 kg

Gears Concave flank teeth, worm case hardened andground, worm wheel of bronze

Lubrication type Oil bath; worm wheel bearing greased

Lubricants Polyglycol oil with viscosity to ISO VG 680; wormwheel: rolling bearing grease

Operating temperature Tmax = 100 °C (oil bath)

Sealing Radial shaft seals at input and output sides

BearingsWorm shaft 2 × 31308 J2Wheel 2 × 6017 or 2 × 32017 X

Remarks Cooling by fan wheel on worm shaft


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Eccentric drive with cycloid cams

Application General industrial

Manufacturer SUMITOMO CYCLO EUROPE, Markt Indersdorf,Germany

Input drive Via coupling



Total reduction i = 357 : 1

Output drive Output shaft with key


Dimensions 300 ∅ × 439 mm

Mass G = 69 kg

Lubrication type Grease

Operating temperature T = 60 °C

Sealing Radial shaft seals on input and output shafts

BearingsNo. 1 shaft 1 × 6302-Z; 1 × 6302No. 2 shaft 1 × 6207; 1 × 6307No. 3 shaft 1 × 6215-Z; 1 × 6213-ZNR

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Bevel gear, single stage

Application Kaplan turbine/generator

Input drive Kaplan turbine

Rating P = 2 005 kW

Speed n = 232 r/min

Torque M1 = 82 500 Nm (turbine)

Total ratio i = 1 : 3,23

Power take-off Lamellar coupling (rotationally stiff, can bend elastically, with slipping elements),generator

Dimensions 1 730 × 1 600 × 3 056 mm

Mass G = 9 000 kg

Gears Cyclopalloid/HPG, case hardened

Lubrication type Circulating oil



Seals Radial shaft seals on input and output shafts (on the input shaft with chamber for oil seepage)

BearingsNo. 1 shaft 1 × NU 1064 MA; 1 × 23060 CC/W33;

1 × 29360 E; 1 × 29248No. 2 shaft 1 × 22348 CC/C3W33; 1 × 32040 X; 1 × 29340 E

Minimum bearing life L10h = 100 000 operating hours

Remarks Turbine shaft = gearbox input shaft. Turbine blade adjustment via input shaft. Each bearing has tem-perature monitoring. Connections for shock pulsemeasurements. Very smooth running for environ-mental reasons.

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126

Spur gear, two-stage

Application Wind power plant

Manufacturer Renk AG, Rheine, Germany

Input drive Wind turbine, claw coupling

Rating P = 168 kW

Speed n = 63 r/min

Input torque M1 = 25 480 Nm


Power take-off Elastic coupling, generator

Dimensions 1 215 × 900 × 1 000 mm

Mass G = 1 350 kg

Gears Helical cut, case hardened, ground


Lubricant Polyglycol oil with viscosity to ISO VG 220

Operating temperature T ≈ 80 °C

Seals Felt ring + 2 × V-rings (input) Labyrinth + 2 × V-rings (output)

BearingsNo. 1 shaft 1 × 22315 E; 1 × NU 313 ECJNo. 2 shaft 2 × 22319 ENo. 3 shaft 1 × NJ 228 ECJ/C3; 1 × 24034 CC/W33


Remarks Monitored by temperature recorder


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Planetary spur gear, two-stage

Application Wind power plant

Manufacturer David Brown, Huddersfield, Great Britain

Input drive Wind turbine, socket connection with clampingrings

Rating P = 1 150 kW

Speed n = 24,5 r/min

Input torque M1 = 448 000 Nm


Power take-off Elastic coupling, generator

Dimensions 1 730 × 2 748 × 2 100 mm

Mass G = 9 500 kg

Gears Planetary wheels straight cut Spur wheels helical cut, case hardened andground


Lubricant Synthetic oil with viscosity to ISO VG 320 EP

Seals Flingers with labyrinth seals

BearingsPlanetary carrier 1 × NCF 18/560 V; 1 × NCF 2972 V3 planetary wheels 3 × 22338 CC/W33Spur gear shaft 2 × NCF 2952 VSpur gear pinion 2 × 32328Auxiliary drive shaft 2 × 32320 J2Hollow shaft 1 × NU 213 ECJ



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Planetary/spur, three-stage

Application Wind power station

Manufacturer Renk AG, Augsburg, Germany

Input drive Wind turbine, toothed coupling

Drive rating P = 1 327 kW


Total ratio i = 57,7 : 1


Dimensions 1 700 × 2 800 × 3 180 mm

Mass G = 11 600 kg

Gears Planetary and spur gears case hardened; spurgears have double helix


Lubricant Synthetic oil with viscosity to ISO VG 220

Operating temperature T = 46 °C (oil inlet temperature)

Sealing Special shaft seal at input side, zinc seal at outputside

BearingsPlanetary carrier 1 × 608/800 MA; 1 × NJ 18/760 MA6/3430166 planetary gears 6 × 24136 CC/C3W33/VE096Planetary carrier 1 × 61888 N1MASpur gear shaft 2 × 313451 B (cylindrical roller bearing 320 × 440 ×

72 mm)Pinion (auxiliary drive) 1 × 6222 N1/C3; 1 × NU 2222 ECJ/C3Pinion (power take- off) 1 × 32228 J2/DF; 1 × NU 2228 ECMA/C3


Remarks Elastic gearbox suspension; permissible noiselevel 85 dBA


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Planetary/spur, superimposed

Application Ship’s generator drive


Input drive Combustion engine, claw coupling


Drive speed n = 297 to 425 r/min

Total ratio i = 1 : 4,2 to 1 : 6,1 (variable)

Power take-off Claw coupling


Dimensions 1 800 × 1 300 × 2 100 mm

Mass G = 6 300 kg

Gears Spur, sun and planetary gears case hardened andground, internally geared ring heat treated


Lubricant Oil with viscosity to ISO VG 100 or SAE 30

Operating temperature T = 70 °C (oil sump)

Sealing Zinc rings at input and output sides

BearingsCoupling 2 × 6032 M/C3Planetary carrier 1 × 6234 M/C3; 1 × 61938 MA/C3Sun wheel 1 × 6224 MA/C3Geared ring 2 × 6044 M/C33 planetary gears 6 × NJ 2313 ECMA/C32 spur gear intermediateshafts 4 × NJ 2219 ECMA/C32 spur pinion shafts 4 × NJ 2218 ECMA/C3


Remarks A constant output speed and thus a constant fre-quency for the generator are aimed at although theinput speed varies. The power is split after thelamellar coupling (one part in the planetary gearset, one part in the hydraulic pump and motor);power rejoined via internally geared ring.


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Spur gear, two-stage

Application Geared motor for industry

Manufacturer SEW-Eurodrive, Bruchsal, Germany

Input drive Electric motor (asynchronous, DC), pulley, turbocoupling

Rating P = 0,75 to 37 kW

Speed n = 3 000 to 750 r/min

Total ratio i = 20,78 : 1 to 201,78 : 1

Power take-off Coupling, sprocket wheel, gear



Mass G = 173 kg



Lubricant Oil with viscosity to ISO VG 46 to ISO VG 200


Seals Radial shaft seals

BearingsNo. 1 shaft 1 × 30307 J2; 1 × NUP 2308 ECJ; 1× 30308 J2No. 2 shaft 1 × NUP 213 ECJ; 1 × 6315-Z

Minimum bearing life L10h = 5 000 operating hours (for M2 max)


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Spur gear, three-stage


Manufacturer Flender-Himmelwerk, Tübingen, Germany

Input drive Electric motor (asynchronous), may be DC; elastic coupling, slip clutch or “Anlaufkupplung”

Rating P = 3 to 90 kW

Speed n = 750 to 1 500 r/min

Total ratio i = 1:18,27 to 1:113,61

Power take-off e.g. elastic coupling



Mass G = approx. 450 kg





Seals Radial shaft seals with dust lip

BearingsNo. 1 shaft 1 × NU 212 ECJ; 1 × 6212; 1 × NU 312 ECJNo. 2 shaft 1 × 22208 E; 1 × 22309 CCNo. 3 shaft 1 × 22312 E; 1 × 21312 ENo. 4 shaft 1 × NJ 2217 ECJ; 1 × 22220 E


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Bevel/spur gear, three-stage


Manufacturer SEW-Eurodrive, Bruchsal, Germany

Input drive Electric motor (asynchronous, DC), coupling,sprocket wheel belt pulley

Rating P = 1,5 to 45 kW

Speed n = 3 000 to 750 r/min

Total ratio i = 11,71 : 1 to 130,16 : 1

Power take-off Hollow shaft, coupling, sprocket wheel, gear



Mass G = 285 kg

Gears Spur: helical cut, case hardened and ground Bevel: curved teeth and case hardened


Lubricant Oil with viscosity to ISO VG 46 to ISO VG 220


Seals Radial shaft seals on input and output shafts

BearingsNo. 1 shaft Electric motor bearingsNo. 2 shaft 1 × 30310 J2; 1 × 30311 J2No. 3 shaft 2 × 32310 J2No. 4 shaft 2 × 6224

Minimum bearing life L10h = 5 000 operating hours (for M2 max)

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Application Main and auxiliary drive of the travelling gear of aportal crane for container handling

Manufacturer Bonfiglioli Riduttori, Bologna, Italy

Input drive Electic motor

Drive rating P = 25 kW (main drive) P = 4 kW (auxiliary drive)

Drive speed n = 1 750 r/min (main drive) n = 1 450 r/min (auxiliary drive)

Total reduction i = 19,5 : 1 (main drive) i = 39,6 : 1 (auxiliary drive)

Output torque M2 = 12 000 Nm (main drive) M2 = 2 400 Nm (auxiliary drive)

Dimensions 835 × 1 115 × 560 mm

Mass G = 380 kg (main drive) G = 100 kg (auxiliary drive)

Gears 20 Mn Cr 5, hardened

Lubrication type Circulating oil (main drive) Oil bath (auxiliary drive)



BearingsNo. 1 shaft 2 × 31312 (main drive)

2 × 32014 X (auxiliary drive)No. 2 shaft 1 × 30313; 1 × 30314 (main drive)

1 × 32208; 1 × 30307 (auxiliary drive)No. 3 shaft 2 × NNC 4832 V (main drive)

2 × NJ 215 EC (auxiliary drive)

Remarks Forced circulating oil lubrication is needed for thebearings on the vertical shaft. The auxiliary drive is coupled in by hand as required. Each of the 16runner wheels is driven by a geared motor. The torques are taken up by the frame via torque supports.


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142


Spur/planetary gear, three-stage

Application Swivelling drive for floating crane

Manufacturer Lohmann & Stolterfoht, Witten, Germany

Drive Electric motor (DC), elastic coupling

Rating P = 335 kW

Speed n = 500 r/min


Power take-off Pinion


Dimensions 1 500 ∅ × 4 132 mm

Mass G = 10 152 kg

Gears All gears straight-cut; spur, sun and planetary whe-els case hardened and ground; hollow wheels heattreated

Lubrication Oil bath


Seals Radial shaft seals on input and output shafts; gap-type seal with grease fill for bearing at pinion sideof output shaft

BearingsNo. 1 shaft 1 × NJ 226 ECJ; 1 × 22218 CC/W33No. 2 shaft 2 × NJ 228 ECJ3 planetary wheels 3 × 22320 CC/W33Planetary carrier 1 × NCF 1884 V; 1 × NCF 1892 V3 planetary wheels 6 × NJ 2320 ECMASun wheel 1 × 61836 MAPinion 1 × 24076 CC/W33


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Planetary, three-stage, vertical

Application Drive for slewing mechanism, e.g. for floatingcrane or bucket excavator

Manufacturer Dorstener Maschinenfabrik AG, Dorsten, Germany

Input drive Electric motor, elastic coupling




Power take-off Pinion for slewing ring


Dimensions 640 ∅ × 1 750 mm

Mass G = 1 250 kg

Gears Sun and planetary gears case hardened; internally geared rings hardened; straight cut teeth

Lubrication type Oil bath; bearings on input and output shafts grease lubricated

Lubricant Oil with viscosity to ISO VG 220; rolling bearinggrease

Operating temperature T = 78 °C (oil bath)


BearingsNo. 1 shaft (input) 2 × 6215/C33 planetary gears 1st stage: 3 × 22207 CC3 planetary gears 2nd stage: 3 × 22210 E3 planetary gears 3rd stage: 3 × NJ 2213 ECJNo. 2 shaft (output) 1 × NU 1034 MA; 1 × 23038 CC/W33


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146


Application Conveyor belt drive for tunnelling

Manufacturer Voith, St. Pölten, Austria

Input drive Electric motor (asynchronous), turbo coupling




Power take-off Hollow shaft with shrunk-on washer connection



Mass G = 490 kg

Gears Bevel gears Klingelnberg-Cyclo-Palloid;Spur gears helical cut, case hardened, ground




BearingsNo. 1 shaft 1 × 31316 J1/DF; 1 × NJ 2316 ECM/C3No. 2 shaft 2 × NJ 2314 ECMA/C3; 1 × QJ 312 N2MA/C3No. 3 shaft 2 × NCF 2932 V


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Bevel, two-stage

Application Conveyor belt drive

Manufacturer Brook Hansen, Edegem, Belgium





Output drive On hollow shaft, shrunk-on washer connection


Dimensions 645 × 450 × 1 130 mm

Mass G = 500 kg

Gears Case hardened and ground


Lubricant Mineral oil with EP additives

Sealing Double-action labyrinth seal at input sideRadial shaft seals with dust lip at output side

BearingsShaft No. 1 2 × 31314; 1 × 22315 EShaft No. 2 2 × 22315 E; 1 × 81210Shaft No. 3 2 × NCF 2934 V

Minimum bearing life L10h = 25 000 hours


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Planetary, two-stage

Application Chain scraper conveyor for underground mine

Manufacturer Gebr. Eickhoff, Bochum, Germany

Input drive Electric motor via fluid coupling or elastic couplingwith motor where poles can be switched




Output drive Toothed coupling or flanged gearbox

Output torque M2 = 100 000 Nm (briefly 250 000 Nm)

Dimensions 816 × 1 250 × 1 155 mm

Mass G = 1 870 kg

Gears Sun and planetary wheels case hardened, hollowwheels of nitrided hardenable steel


Lubricant Mineral oil (anti-wear + EP) with viscosity to ISO VG 320


Sealing Radial shaft seal + dust seal at input side, mechanical seal at output side

BearingsNo. 1 shaft 2 × 6222/C33 planetary gears 6 × NJ 2311 ECMA3 planetary gears 3 × RN 315 ECP/QRNo. 2 shaft 2 × NJ 2868 ECMA/VE900


Remarks Robust casing ideal for mining applications; powertake-off shaft must briefly take up very large forcesfrom the conveyors


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Bevel/spur/planetary, three-stage

Application Chain scraper conveyor for underground mine

Manufacturer Gebr. Eickhoff, Bochum, Germany

Input drive Electric motor via fluid coupling, or elastic couplingfor switching pole motor




Power take-off Toothed coupling, or flanged gearbox

Output torque M2 = 100 000 Nm (briefly 250 000 Nm)

Dimensions 816 × 1 655 × 990 mm

Mass G = 2 980 kg

Gears Bevel, spur, sun and planetary gears case hardened; ring with internal gear hardened andnitrided


Lubricant Mineral oil (EP) with viscosity to ISO VG 320


Sealing Radial shaft seal + dust seal on input shaft;mechanical seal on output shaft

BearingsNo. 1 shaft 1 × 31322 XJ2/DF; 1 × 22324 CC/W33No. 2 shaft 1 × 22320 E; 1 × 22326 CC/W33No. 3 shaft 2 × 32034 X3 planetary gears 3 × RN 315 ECP/QRNo. 4 shaft 2 × NJ 2868 ECMA/VE900


Remarks Robust casing for mining conditions; output shaftwith bearing arrangement must be able to accom-modate very high forces from the conveyor for briefperiods


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Bevel/spur/planetary, three-stage

Application Ski lifts (seat and gondola types)

Manufacturer L. Kissling, Zurich-Seebach, Switzerland

Input drive Electric motor (asynchronous or DC), elastic coupling


Drive speed n = 1 500 or 1 800 r/min

Total ratio i = 93,75 : 1 (or from 48,31 : 1 to 132,92 : 1)

Output drive Flanged-on rope sheave

Output torque M2 = 170 000 Nm; rope tension: s = 450 000 N

Dimensions 530 × 730 × 1 333 mm + 905 × 1 250 mm ∅

Mass G = 3 800 kg

Gears Bevel, spur and planetary wheels case hardened,hollow planetary wheel hardened

Lubrication type Oil bath and circulating oil

Lubricant EP oil with viscosity to ISO VG 220 or ISO VG 150


Sealing Radial shaft seal + Z sealing washer at input sideand pairs of radial shaft seals + dust cover at output side

BearingsNo. 1 shaft 1 × 31315 J2/DF, 1 × 22317 ENo. 2 shaft 2 × 23220 CC/W33No. 3 shaft 2 × 23122 CC/W331 sun pinion 1 × 893103 planetary gears 6 × NCF 2222 VRope sheave 1 × 24048 CC/W33; 1 × 23048 CC/W33


Remarks Under-floor drive can be decoupled


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Planetary/bevel plate with adjoining reduction gear

Application Drive for pumps in extraction plant

Manufacturer Motovario, Modena, Italy


Drive rating P = 9,2 kW



Output torque M2 = 500 Nm

Mass G = 145 kg

Gears 100 Cr 6, hardened and heat treated




BearingsNo. 1 shaft 1 × 6213; 1 × 6309No. 2 shaft 1 × 6213; 1 × NJ 210 ECNo. 3 shaft 2 × 32206No. 4 shaft 1 × 30210; 1 × 30213


Remarks Gearbox is designed for maximum reliability underdifficult operating conditions


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158

Spur, split power, three-stage

Application Central drive for tube mill (cement)

Manufacturer A. Friedr. Flender, Bocholt, Germany

Input drive Electric motor (asynchronous), elastic coupling




Output drive Toothed coupling

Output torque M2 = 2 350 kNm; at start-up 5 885 kNm

Dimensions 3 380 × 4 000 × 3 780 mm

Mass G = 79 250 kg

Gears 1st stage: helical 2nd stage: straight cut 3rd stage: double helix All gears case hardened



Operating temperature Tmax = 65 °C (oil sump)

Sealing Lamellar rings at input and output sides

BearingsShaft No. 1 2 × NU 2248 MA/C3; 1 × QJ 248 N2MA/C3Shaft No. 1 (auxiliary drive) 2 × 6248 M/C3Shaft No. 2 2 × NCF 2976 VShaft No. 3 (3×) 3 × NU 3068 MA/VE900; 6 × NU 3084 MAShaft No. 4 1 × 60/560 MA/C3; 1 × N 28/710 ECMB


Remarks The equal power split is achieved by a radially freepinion and gears adjusted by oil injection method


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160

Bevel/spur gear, three-stage

Application Drive of a coal grinding mill

Manufacturer David Brown, Huddersfield, Great Britain


Rating P = 420 kW

Speed n = 990 r/min


Power take-off Grinding plate of mill


Dimensions 1 600 × 2 920 × 2 000 mm

Mass G = 25 600 kg

Gears Bevel: spiral cut in hard state Spur: helical cut, ground, all case hardened




Seals Double radial shaft seals with additional flingers oninput shaft; labyrinth with additional special rubbingseal on output shaft

BearingsNo. 1 shaft 1 × 32324 J2; 1 × 32220 J2No. 2 shaft 1 × 32036 X/DF; 1 × 23036 CC/W33No. 3 shaft 1 × 32036 X/DF; 1 × 23036 CC/W33No. 4 shaft 1 × 230/560 CA/W33; 1 × 294/630 EM;

1 × 230/500 CA/W33


Remarks Forces from the grinding chamber are taken up bythe bearings on the output shaft


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162

Bevel/planetary, two-stage

Application Raw meal mill (cement industry)


Input drive Electric motor (squirrel cage), elastic coupling




Output drive Grinding receptacle


Dimensions 2 670 × 3 050 × 3 050 mm

Mass G = 68 600 kg

Gears Bevel, sun and planetary gears case hardened and ground, internally geared ring pounded andhardened


Lubricant Oil with ciscosity to ISO VG 220


Sealing Labyrinths at input and output sides

BearingsBevel pinion shaft 1 × BT2B 332931 (240 × 480 × 220 mm)

1 × NU 2252 MA/C3Bevel wheel 1 × 32064 X/DF; 1 × NU 1060 MA/C33 planetary gears 3 × 23164 CC/C3W33


Remarks Temperature, pressure and oil flow rate monitored;shock pulse measurements


163

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164

Planetary, three-stage

Application Locomotion drive for construction machines

Manufacturer Orenstein & Koppel, Hattingen, Germany

Input drive Flanged-on hydraulic motor, plug-type connection

Drive speed n = 4 000 r/min (adjustable)

Total reduction i = 80 : 1 to 200 : 1

Output Sprocket wheel or flanged-on rim



Mass G = 210 kg

Gears Sun and planetary wheels case hardened andground; hollow wheels heat treated and nitrided


Lubricant Gear oil SAE 90 or engine oil SAE 15W40

Sealing O-ring (static) at input side, mechanical seal + V-ring at output side

Bearings1st stage 3 × BC2B 322418 B (22 × 39 × 22 mm;

full complement)2nd stage 3 × BC2B 322421/HB3 (35 × 52 × 26 mm;

full complement)3rd stage 5 × BC2B 326111/HB3 (50 × 70 × 32 mm;

full complement)Sprocket wheel 2 × T4DB 170Brake 1 × 6009

Minimum bearing life L10h = 500 operating hours at maximum torque


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166

Spur/planetary, three-stage

Application Drive for articulation of excavator

Manufacturer Dorstener Maschinenfabrik AG, Dorsten, Germany





Output drive Hollow shaft with shrunk-on washer, cartridge-typegearbox


Dimensions 800 ∅ × 1 130 mm

Mass G = 1 800 kg

Gears Spur and planetary gears case hardenedInternally geared rings heat treated



Operating temperature T ≈ 90 °C (oil bath)


BearingsNo. 1 shaft 2 × 6215No. 2 shaft 2 × 60243 planetary wheels 3 × 22311 E3 planetary wheels 3 × 22315 ENo. 3 shaft 1 × NCF 1852 V; 1 × NCF 1856 V



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168

Spur, four-stage, vertical

Application Drive for mixer for chemical industry

Manufacturer Jahnel Kestermann, Bochum, Germany

Input drive Electric motor (asynchronous or DC)

Drive rating P = 75 (or 55) kW

Drive speed n = 1 500 (or 1 000) r/min


Power take-off Flanged coupling


Dimensions 1 320 × 1 000 × 1 720 mm

Mass G = 4 700 kg


Lubrication type Oil bath and circulating oil



Sealing Radial shaft seal at input side Oil cover and V-ring on output shaft

BearingsNo. 1 shaft 2 × 33215No. 2 shaft 2 × 32314No. 3 shaft 1 × 30218; 1 × 32318No. 4 shaft 2 × 32322No. 5 shaft 2 × NCF 1872 VMixer shaft 2 × 32038 X; 1 × 23060 CCK/W33 + OH 3060 H


Remarks Permissible noise level 75 dBA


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Spur, four-stage, vertical

Application Surface ventilator

Manufacturer Brook Hansen, Edegem, Belgium






Dimensions 760 × 925 × 1 075 mm

Mass G = 860 kg


Lubrication type Circulating oil; bearing at output side of outputshaft grease lubricated

Lubricant Mineral oil with EP additives

Sealing Double action labyrinth at input side;rising pipe + radial shaft seal with dust lip at output side

BearingsNo. 1 shaft 2 × T2ED 050No. 2 shaft 2 × 32313No. 3 shaft 2 × 22317 ENo. 4 shaft 1 × 22228 E; 1 × 22328 E


Remarks External radial force 4 500 kN andexternal axial force 8 900 kN on the output shaft

170


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172

Spur, split power

Application Drive for briquetting roll press

Manufacturer Flender ESAT, Herne, Germany

Input drive Electric motor (asynchronous), V-belts




Power take-off Toothed coupling


Dimensions 1 620 × 3 510 × 1 200 mm

Mass G = 17 000 kg


Lubrication type Gears: oil bath Bearings: circulating oil

Lubricant Mineral oil with viscosity to ISO VG 320

Operating temperature T = 60 °C (oil sump)


BearingsNo. 1 shaft 1 × 22330 CC/W33; 1 × 22324 CC/W33No. 2 shaft 2 × 24132 CC/W33No. 3 shaft 2 × NJG 2330 VHNo. 4 shaft (2×) 4 × 23238 CC/W33No. 5 shaft (2×) 2 × 23068 CC/W33; 2 × 23976 CC/W33


Remarks Power split with independent load compensationon the axially freely adjustable double helix pinionshaft of the 3rd stage


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174

Spur gear, single stage

Application Pinion stand of hot strip finishing mill

Manufacturer SMS – Schloemann-Siemag AG, Hilchenbach,Germany

Input drive Electric motor (DC), toothed coupling

Rating P = 10 000 kW

Speed n = 0 to 36,4 or 80,24 r/min


Power take-off Toothed coupling, rolls

Output torque M2 = 2 × 1 310 000 Nm

Dimensions 2 660 × 5 420 × 2 630 mm

Mass G = 49 100 kg

Gears Double helical, case hardened

Lubrication type Circulating oil with water cooler


Seals Labyrinth seals at input and output sides

BearingsNo. 1 shaft 1 × 240/600 CA/W33 and 1 × 240/500 CA/W33No. 2 shaft 1 × 24184 ECA/W33 and 1 × 240/500 CA/W33



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176

Spur, two-stage

Application Drive for vertical edging stand of a blooming mill(hot plate mill)


Input drive 2 electric motors (DC) via toothed coupling

Drive rating P = 2 × 1 600 kW

Drive speed n = 0 to ± 140/273 r/min


Power take-off 2 cardan shafts

Output torque M2 = 2 × 1 350 000 Nm

Dimensions 5 600 × 10 430 × 3 700 mm

Mass G = 258 000 kg

Gears Helical cut, ground; 1st stage and pinion, 2nd stage: case hardened; gear, 2nd stage: heat treated



Operating temperature T = 40 °C (oil supply temperature)


BearingsNo.1 shaft (2×) 2 × taper roller bearing 331197 A

(384,175 × 546,1 × 222,25 mm) 2 × cylindrical roller bearing BC2B 320041 (380 × 540 × 200 mm)

No. 2 shaft (2×) 2 × taper roller bearing BT2B 332663/HB1 (519,112 × 736,6 × 258,762 mm) 2 × cylindrical roller bearing 316077 A (440 × 620 × 225 mm)

No. 3 shaft (2×) 2 × taper roller bearing BT2B 328310/HA4 (1 562,1 × 1 806,575 × 279,4 mm) 2 × cylindrical roller bearing BC1B 322416/HA1 (1 700 × 2 060 × 160 mm)

Weight balancing (2×) 4 × 29330 E


Remarks The two rolls are driven via two mechanicallyseparate, electrically synchronised motors


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178

Spur, with shift

Application Drive for a Sendzimir rolling mill

Manufacturer ERCMD Engrenages et Réducteurs Citroen-Messian-Durand, Velizy-Villacoublay, France,for DMS Seclin, France



Drive speed n = 0 to 350/850 r/min

Total ratio i1 = 1 : 1; i2 = 1,595 : 1

Power take-off 4 toothed couplings

Output torque 4 × M2 = 40 925 Nm

Dimensions 2 430 × 4 190 × 4 820 mm

Mass G = 52 000 kg

Gears Input stage: helical cut, case hardened, groundSecond stage and pinion stand: double helix



Operating temperature T = 45 °C (oil inlet temperature)

Seals Felt seals with labyrinth on input shaft; radial shaftseals on output shafts

BearingsNo. 1 shaft 1 × 23168 CC/C3W33; 1 × 23080 CAC/C3W33No. 2 shaft 1 × 23168 CC/C3W33; 1 × 23164 CC/C3W33No. 3 shaft 2 × NU 19/670 ECMANo. 4 shaft 2 × 23080 CAC/C3W33No. 5 shafts (2×) 4 × 23244 CC/C3W33; 2 × QJ 1044 N2MA/C4No. 6 shafts (2×) 4 × 23044 CC/C3W33; 2 × QJ 1044 N2MA/C4


Remarks Axial forces on the output shafts 40 000 N pershaft


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180

Spur, with shift

Application Drive for aluminium foil mill (rolling mill)

Manufacturer David Brown, Huddersfield, Gt. Britain

Input drive Two electric motors; elastic couplings

Drive rating P = 2 × 3 000 kW

Drive speed n = 374 or 935 r/min

Total ratio i1 = 1 : 1; i2 = 1 : 2,5

Power take-off Torsionally elastic coupling

Output torque 2 × M2 max = 190 900 Nm

Dimensions 1 810 × 4 530 × 4 135 mm

Mass G = 45 700 kg

Gears Double helix, case hardened, ground


Lubricant EP oil with viscosity to ISO VG 220


Sealing Labyrinth with radial shaft seal on input and output shafts

BearingsNo. 1 shafts (4×) 8 × 22244 CC/W33No. 2 shafts (4×) 8 × 23248 CC/W33No. 3 shaft 2 × 230/500 CA/W33No. 4 shaft 2 × 60/500 MANo. 5 shaft 2 × 24068 CC/W33No. 6 shaft 2 × 24064 CC/W33



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182

Spur, with shift, one-stage

Application Drive for reeler for hot rolled sheet




Drive speed n = 0 to 400 or 1 200 r/min

Total ratio i1 = 1 : 2,37; i2 = 1 : 5,19

Power take-off Toothed coupling

Output torque M2 = 112 000 or 236 000 Nm

Dimensions 2 075 × 2 900 × 1 620 mm

Mass G = 17 885 kg





BearingsShaft No. 1 1 × 23240 CC/C3W33; 1 × 24134 CC/C3W33Shaft No. 2 1 × 23056 CC/C3W33; 1 × NNU 4960 B/SPC3W332 shifting gears 4 × 239/500 CA/C3W33



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184

Planetary

Application Drive for rolls of continuous casting plant

Manufacturer Brevini Riduttori, Reggio Emilia, Italy

Input drive Electric or hydraulic motor



Total reduction i = 555 : 1


Dimensions 970 × 1 280 mm

Mass G = 1 850 kg

Gears Case hardened

Lubricant EP oil SAE 80



BearingsNo. 1 shaft 1 × 160222nd planetary stage 6 × AL-NNC 5010 CV3rd planetary stage 6 × AL-NNC 5016 CV4th planetary stage 10 × AL-NNC 5022 CVNo. 4 shaft 2 × NCF 2972 V

Minimum bearing life L10h = 100 000 hours

Remarks Gearbox comprises modules from series units


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186

Spur, three-stage

Application Single screw extruder

Manufacturer Santasalo GmbH, Wuppertal, Germany

Input drive Electric motor (DC), elastic coupling



Total reduction i = 1 : 59,3

Power take-off Extruder screw


Dimensions 1 580 × 2 680 × 1 665 mm

Mass G = 12 000 kg






BearingsNo. 1 shaft 2 × 22328 CC/W33No. 2 shaft 2 × NJG 2330 VHNo. 3 shaft 2 × NJG 2338 VHNo. 4 shaft 1 × NCF 3068 V; 1 × NCF 2972 V;

1 × 29480 EM; 1 × 81164

Minimum bearing life 40 000 operating hours

Remarks Noise damping cover to reduce noise level


187

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188

Spur switching gear, two-stage

Application Drive for plastic extruder

Manufacturer Zahnradwerk Köllmann, Wuppertal, Germany

Input drive Electric motor (DC), elastic coupling

Rating P = 43 to 49 kW

Speed n = 1 790 r/min

Total ratio i1 = 1 : 23,95, i2 = 1 : 17,43

Power take-off Socket on extruder screw

Output torque M2 = 5 600 Nm (1st gear) M2 = 4 600 Nm (2nd gear)


Mass G = 670 kg





Seals Fluoro rubber radial shaft seals

BearingsNo. 1 shaft 1 × 22309 CC; 1 × NJ 309 ECJNo. 2 shaft 1 × 22311 E; 1 × NJ 311 ECJ; 4 × K 90×98×27No. 3 shaft 2 × 6221; 1 × 29422 E


Remarks Noise level < 80 dBA


189

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190

Spur, two-stage

Application Drive for test rig

Manufacturer Voith, St. Pölten, Austria

Input drive Hydraulic motor


Drive speed n = 465 to 1 953 r/min



Dimensions 740 × 1 219 × 630 mm

Mass G = 1 135 kg




BearingsNo. 1 shaft 2 × NJ 2316 ECM/C3; 1 × QJ 313 N2MA/C3No. 2 shaft 2 × NJ 2320 ECMA/C3No. 3 shaft 2 × 23230 CC/C3W33


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skf industrial gearbox 2

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