QUALIFIED

SOLUTIONSFOR THE

TRANSMISSION

INDUSTRY

INDEX

OUR HISTORY 4

HEAD OFFICE AND PLANT 5

TECHNICAL ACCURACY 6

PRODUCTS 7

PTMb horizontal parallel gears step-up and reduction gear boxes for centrifugal, 8

turbo generator or compressor application

Auxiliaries for turbines and compressors 12

GR right-angle gears 14

HS parallel shaft gears step-up gear boxes for high speeds 18

High speed parallel reducing gear boxes for turbo expander applications 20

Multistage, vertical offset and packages 21

OUR HISTORY

Gusti Alfredo SpA

The group was established by Mr. Alfredo Gusti with the name of Gusti Alfredo SpA.

Since the very beginning the core business was both the manufacturing and engineering

of mechanical components with a special focus on gears and transmissions.

A strong relationship with the Navy and the Railway industry was immediatley established

for the production of gears and gearboxes.

Gusti Alfredo developed in the last thirty years three major lines of products:

• mass production gears for automotive, tractors, sport cars and textile machines

(This branch has been sold in 1989);

• gears and gear units for industrial application, high speed step-up units, railway gears, test bench;

• machines for Glass Industry (vials, ampules and glasses).

OCMI purchased from Schott Moderne Mecanique, its main competitor in the ampoule line manufacturing business.

OCMI was established: the company main business was and still is the engineering and manufacturing of glass machines.

OTG bought METI srl and all people and machines tool related to the core businessproduction, together with Engineering Department.

Meti srl have been working on the market since 15 years by designing and buildings

skid-mounted plants far the petrochemical fi eld.

Gusti Alfredo SpA spin-off all its assets into a Newco named OTG (ORGANI TRASMISSIONE GUSTI) and also moved to a new premise.

The idea behind the OCMI India project is to supply the market with products made

especially for the need of the Indian producer and realised with the quality and the aftersale service of a top European manufacturer.

1921

1997

1977

2005

1986

2006

OCMI and OTG merged into OCMI-OTG SpA.

2005

HEAD OFFICE AND PLANT

EMPLOYEES

Via Venezia Giulia, 720157 Milano - ITALY

Land Area 10.000 m2

Building Area 4.000 m2

13 Workshop

4 Engineering Dpt

2 Quality assurance

2 Administration and marketing

21 TOTAL

TECHNICAL ACCURACY

OTG core business has always been the manufacturing of gears for many different applications.

In the time they have been engaged with the high speed (i.e. Ferrari Cars 308, 328 and Testarossa,

Piaggio, Fiat Avio and gear units coupled with turbines for industrial purposes) and also with high

power and heavy duty services.

The development of the unit is completely followed inside the factory by highly qualifi ed engineers

connected with the Politecnico University of Milano from design to manufacturing and assembling

of all inside components and fi nal tests.

For this reason they are in the position to follow under tight quality control any new project which

could involve special gear units construction or their standard units.

OTG can shortly resume the method of work as follows:

• Design aimed to obtain best functional performance (torsional strenght and resistance to bending stress, effi ciency, etc.) through fi nite element programming and integrated computer aided design

• Procurement oriented just at qualifi ed suppliers periodically checked by Quality Assurance

• Production organized by complying with manufacturing cycles as to match design and requested standards.

• Middling test directed towards respect of Quality Control Plan for every single gear unit and

specially adressed to verify the requested standard during manufacturing plan

• Final test executed according to test procedures for speed increasers and reducers, and

particularly with possibility of load test until 1.000 CV

PRODUCTS

Auxiliaries for turbines and compressors

GR right-angle gears HS parallel shaft gears step-up and reduction for high speeds

High speed parallel reducing gear boxes

for turbo expander applications

Multistage, vertical offset and packages

PTMb horizontal parallel gears for centrifugal pump, turbo generator

or compressor applications

PTMb horizontal parallel gearsstep-up and reduction gear boxes for centrifugal pump,

turbo generator or compressor application

Main construction characteristics:

• API 613, 677, AGMA 421.06, AGMA 6011 calculation codes• Casing in cast iron or welded and annealed carbon steel

• Double/single helical gears in forged alloy steel, carburized and hardened,

teeth fi nished by grinding after heat treatment• Low speed shaft in forged alloy steel• Both rotors dynamically balanced in accordance with API 613 or ISO 1940 rules.

• Radial bearings fi x profi le type

• Thrust bearning taperland/tilting pad type• Oil seals, labirynth type on both shaft end

• The gearbox is completed with a main lubrication pump, directly driven by low spead shaft and with an oil inlet header, in welded stainless steel

Gearbox Instrumentation:• Temperature elements on bearings

• Provision for mounting of Bently Nevada vibration probes or full probes supply

turbo generator or compressor application

Main construction characteristics:

• API 613 677 AGMA 421 06 AGMA 6011 calculation codes

Dimensions of P.T.Mb series - standard sizes and intermediate versions (all size are indica ve) Approx.weight

Kg

Average oil lt.

Size I A B C D E F G H (H 10)

L M N O P Q

13 130 170 130 430 260 173 346 193 220 413 330 50 150 5 250 200 15

15 150 180 140 470 280 183 366 200 235 435 350 60 165 5 270 270 19

17 170 200 130 500 320 195 390 200 250 450 360 70 180 5 310 350 24

20 200 235 170 605 430 215 430 223 300 523 435 85 205 65 300 500 34

210 210 230 165 605 430 215 430 223 300 523 435 85 205 65 300 500 34

22 220 250 180 650 460 225 450 265 320 585 435 107.5 205 80 300 650 38

235 235 242.5 172.5 650 460 225 450 265 320 585 435 107.5 205 80 300 650 38

25 250 290 220 760 510 245 490 273 350 623 570 95 253 95 320 850 58

265 265 282.5 212.5 760 510 245 490 273 350 623 570 95 253 95 320 850 58

28 280 300 220 800 560 265 530 315 375 690 600 100 303 95 370 1000 81

290 290 295 215 800 560 265 530 315 375 690 600 100 303 95 370 1000 81

30 300 360 250 910 620 305 610 325 400 725 650 130 350 100 420 1400 112

315 315 352.5 242.5 910 620 305 610 325 400 725 650 130 350 100 420 1400 112

33 330 380 260 970 660 325 650 350 425 775 650 160 350 120 420 1600 120

345 345 372.5 252.5 970 660 325 650 350 425 775 650 160 350 120 420 1600 120

36 360 400 270 1030 690 340 680 380 460 840 650 190 350 135 420 1750 140

380 380 390 260 1030 690 340 680 380 460 840 650 190 350 135 420 1750 140

40 400 460 310 1170 780 385 770 445 500 945 2400 105

425 425 447.5 297.5 1170 780 385 770 445 500 945 2400 105

45 450 510 330 1290 850 410 820 475 550 1025 2900 130

475 475 497.5 317.5 1290 850 410 820 475 550 1025 2900 130

50 500 550 350 1400 900 435 870 520 600 1120 3800 160

525 525 537.5 337.5 1400 900 435 870 520 600 1120 3800 160

55 550 600 400 1550 970 450 900 580 650 1230 4750 200

575 575 587.5 387.5 1550 970 450 900 580 650 1230 4750 200

60 600 650 450 1700 1050 485 970 630 700 1330 5500 250

625 625 637.5 437.5 1700 1050 485 970 630 700 1330 5500 250

References to the symbols

PI Pressure gauge

PS Pressure switch

PSV Safety valve

TI Temperature indicator

1 Main Lubrica on pump

2 Auxiliary and prelubrica on pump

3 Heat exchanger4 Double fi lter (delivery)5 Filter (suc on)

6 Flow regulator

Example of lube oil system

Example of layout

EXTRACT OF P.T.Mb REFERENCE LIST

Customer Driv. Mach Model Kw Ra o

gabbioneta pump P.T. Mb 15 3180 2960/1500

wor ngton pump P.T. Mb 20 1310 2980/3950

fsm/ferrari engine test P.T. Mb 25 390 2000/16000

nuovo pignone centr. pump P.T. Mb 30 3400 2980/4950

pantochim compressor P.T. Mb 36 4000 1500/5000

nuovo pignone test bench P.T. Mb 40 6900 4000/1800

fi ncan eri generator P.T. Mb 45 2100 10000/1500

ansaldo generator P.T. Mb 50S 5460 9065/1500

cei generator P.T. Mb 560 14000 4170/1500

ansaldo generator P.T. Mb 60 22600 4200/1500

ellio pump P.T. Mb 60 3350 5000/600

Auxiliaries for turbines and compressors

Special purpose auxiliary gearboxes for step-up and lubrication of GE-NP gas turbines (PGT 10, GE 10,

M55002E series) and lubrication of GE-NP compressor (PCL series).

GR right-angle gears step-up and reduction gear boxesGR right-angle gears

step-up and reduction ge

Main construction characteristics:

• Casing in grey cast iron or welded and annealed carbon steel, complete with inspection window and breather pipe

• One pair of bevel gears in forged alloy steel, carburized and hardened, teeth lapped

or fi nished grinding after heat treatment

• Both rotors dynamically balanced in accordance with API 613 or ISO 1940 rules• Bevel roller or sleeve type bearings• Oil seal labirynth or retaining ring on high speed shaft

• Oil seal retaining ring on low speed shaft

• Anti-rotation device fi tted on the low speed shaft (free wheel) if required• Forced feed lubrifi cation by means of separate lube oil system

• Special models with hollow shaft for fi re fi ghting application as per NFPA-20 notes•

Gearbox Instrumentation:

• Temperature elements on heat exchanger

Sizes

DIMENSIONS (all dimensions are indica ve)Approx.

weight Kg

Average oil

quan es lt A B C D E F H (h 10)

1 330 340 215 140 25 5 200 130 8

2 420 450 255 180 30 5 270 280 13

3 530 550 330 230 35 5 320 500 20

4 650 660 435 260 40 5 400 750 40

5 700 740 445 295 50 5 445 1000 55

6 800 825 500 350 55 5 475 1400 70

7 900 925 550 400 60 5 525 1900 95

8 1000 1050 600 475 70 5 575 2500 145

KEY TO DIAGRAM

FG Visual fl ow indicatorLI Visual level gauge

PI Pressure gaugePSV Safety valve

TI Temperature gauge

1 Lubricator pump2 Heat exchanger

3 Self cleaning fi lter on delivery side4 Suc on side fi lter

EXTRACT OF GR REFERENCE LIST

Customer Applica on Model Kw Ra o

termomeccanica italiana pump GR 6 520 1840/1485

dresser pump GR 6 545 1500/1500

ellio pump GR 7 1530 1500/1710

dresser pump GR 7 1375 1500/1500

wor ngton pump GR 8 1156 1650/1800

ellio pump GR 8 2533 1111/445

HS parallel shaft gears step-up gear boxes for high speeds

HS parallel shaft gears

step-up gear boxes for high speeds

Main construction characteristics:

• API or Agma calculations

• Carter in pre-fabricated steel, welded and heat-treated after welding • Single helical gears in forged alloy steel carburized and hardened, fi nished by grinding

after heat treatments, teeth quality as per DIN 5 class

• Low speed shaft in forged alloy steel

• Each rotor dynamically balanced in accordance with API 613 or ISO 1940 specifi cations• Low speed shaft radial bearing fi xed profi le type• High speed shaft radial bearings tilting pad type

• Axial bearing taper land/tilting pad type on low speed shaft

• Thrust collars in 3 pieces on high speed pinion• Forced feed lubrifi cation by means of separate lube oil system

Gearbox Instrumentation:

• Resistance temperature detectors for bearing temperature monitoring

• Provision for mounting Bently-Nevada vibration probes or full probes supply

EXTRACT OF HS REFERENCE LIST

Customer Loca on Model Kw Ra o

nuovo pignone Solvay - Rosignano HS 150 70 2980/11925

nuovo pignone CTIP - Milazzo HS 250 180 2980/9500

sulzer escher wyss - HS 300 785 2890/28015

nuovo pignone Test Bench HS 350 15000 5480/15000

sulzer escher wyss - HS 450 960 1492/13021

nuovo pignone - HS 480 753 2900/34545

dresser rand UIOM - Pau HS 500 6600 8000/1500

nuovo pignone Test Bench HS 700 7500 1800/18000

nuovo pignone T.P.L. - Iraq THS 25 90 2980/21221

sulzer escher-wyss Kalusk THS 280 620 2986/21622

nuovo pignone Fenco - Francia THS 30 180 2970/27658

nuovo pignone A.K.Z. - Brazil THS 34 800 3560/22546

sulzer escher-wyss Kelsterbach THS 400 1200 2982/34114

nuovo pignone Fenco - Canada THS 625 3750 1750/7716

nuovo pignone Enichem - Ravenna TH2S 400 390 2980/35262

sulzer escher-wyss Seadri - USA TH2S 520 1307 1787/22016

nuovo pignone Enichem-Anic - Porto Torres 2THS 980 1300 3000/16895/25680

nuovo pignone Skikda - Algeria 2THS 1480 2900 1480/15898/19714

nuovo pignone Enichem - Priolo 2TH3S 800 1000 2980/26510/36068

nuovo pignone Sonatrach-Bir Rebaa - North Algeria 2TH3S 800 400 2980/22401/22401

nuovo pignone Italsider - Taranto 2TH3S 1480 2800 1480/12321/15583

nuovo pignone Danieli - Iraq 2TH3S 1480 3500 1480/15850/18198

nuovo pignone IGI - Manfredonia 2TH4S 940 1183 2980/29715/38520

nuovo pignone Enichem-Anic - Porto Torres 2TH4S 940 1075 2980/28000/49468

nuovo pignone Metalka - Yugoslavia 2TH4S 980 2171 2980/21174/30946

THR THS TH2S

2THS 2TH3S 2TH4S

High Speed parallel reducing gear boxes for turbo expander applications

EXTRACT OF HS TURBO EXPANDER REFERENCE LIST

Customer Model Kw Ra o

nuovo pignone HS 400 764 33500/3058

nuovo pignone 5HS 3504 7160 27000/23030/17022/10581/1500

Main construction characteristics:• API or Agma calculations• Carter in pre-fabricated steel, welded and heat-treated after welding

• Single helical gears in forged alloy steel carburized and hardened, fi nished by grinding

after heat treatments, teeth quality as per DIN 5 class• Low speed shaft in forged alloy steel • Each rotor dynamically balanced in accordance with API 613 or ISO 1940 specifi cations

• Low speed shaft radial bearing fi xed profi le type

• High speed shaft radial bearings tilting pad type• Axial bearing taper land/tilting pad type on low speed shaft

• Thrust collars in 3 pieces on high speed pinion• Forced feed lubrifi cation by means of separate lube oil system

Gearbox Instrumentation:• Resistance temperature detectors for bearing temperature monitoring

• Provision for mounting Bently-Nevada vibration probes or full probes supply

Multistage, vertical offset and packages

Special purpose gearboxes enginereed and built for customer specifi cations, multi axes, vertical type, coaxial, test bench also with complete lube oil system (API 614 or standard manufacturer) and

assembly on skid of customer parts.

OCMI-OTG S.P.A.Via Venezia Giulia, 720157 Milano (Italy)Phone +39.02.39.00.21.50Fax +39.02.35.70.944e-mail: info@ocmigroup.com http://www.ocmigroup.com

EXPORT WORLDWIDEOTG references include the most important manufacturers of turbines, compressors and pumps and the top engineering companies.The company is engaged in manufacturing different type of gearboxes starting from sport car units, such as Ferrari and Porsche, ending with marine and heavy duty services gear boxes. Tightly linked with gear units manufacturing is the realisation of medium and small lots of gears on customer drawings for different industrial applications, but mostly for railway transmission, printing machines and steel plants.

REDUCTION AND STEP-UP GEARSSingle and double helical with or without collarsSingle or multistageHorizontal or vertical offsetRight-angle gears

SUB CONTRACTINGEvery customer can make use of OTG know-how and equipment.OTG also specialises in:

Railway gearsTextile gearsCompressor gear trainsTurbo auxiliary gear trainsComplete packages

ACCESSORIESTogether with its step-up and reduction gear boxes, OTG offers:

BearingsOil filtersComplete lube oil systems