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High-speed Gearbox
 
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The gear compressor company under Shenyang Blower Works Group Import & Export Co. is the expert in gearbox manufacturing. Since its foundation in 1960, it has produced over 2000 sets of gearboxes, all of which have been distributed to domestic markets and 25 countries and areas globally. In 1987, the company introduced design, manufacturing and inspection technologies of high-speed MHS, HS, HSS and HSD gears from America Philadelphia Gear Company. After 20 years of application and development of these technologies, company has established its own technologies and processing systems. At present, the company can design gearboxes upon several standards such as API613, AGMA421 and AGMA6011. The products produced have maximum service power of17000KW, maximum design power of 55000KW, gear rotary speed of 49867RPM, gear linear speed of 175m/s and maximum distance between centers of 1500mm.


Gearbox has two types, cast type and welding type. The company has more than 40 years experience in cast gearbox application, thus the product has a supplicated and reliable structure; while the welding gearbox is made of high-quality and high-speed steel by welding process, then treated by reliability process. Both gearboxes have adopted method finite element analysis to analyze box deformation, so as to ensure a rational strength and adequate rigidity.

Materials of gears are high-quality alloy steel, which went through electrical rolling and re-melting, strict heat treatment, mechanical properties inspections and failure detections. Gear faces are treated by a process of rolling-shaving-nitridation or carburizing and quenching-gear grinding, with highest gear accuracy up to DIN3 class.

All rotary parts have gone through strict dynamic balancing calibration process.

Rotor dynamics calculation uses a special program from America Philadelphia Gear Company or the company’s own special RBSP program.
 
Gear thermal deformation, twisting and buckling distortion are calculated by a special computerized program, which is also used to repair the gear forms.
Bearings are hydraulic and dynamic pressure sliding bearings, while design matches API and AGMA standards. In addition, bearings design has been analyzed and calculated by special programs, with processing and inspections strictly in accordance with ITN070 Standard. The radial bearings are all horizontal split bearings, with Babbit Alloy lining, including tilting-pad bearings, qua-oil wedges bearings, qua-oil leaf bearings and common cylinder bearings. Thrust bearings are thrust bearings with fixed thrust faces, single-layer and self-balancing pad thrust bearings, multi-layer and self-balancing thrust pad thrust bearings.
 
Parameter List of Gearboxes
 

Style

Service Power

Speed Ratio Range

N(Kw)

I

Circular Tooth Gear

GYD-200

360—550

1.0—4.0

GYD-250

500—980

1.0—5.5

GYD-300

900—1750

1.0—5.0

GYD-350

1700—3000

1.0—5.5

GYD-400

2800—4200

1.0—4.5

GYR-450

4000—6700

1.0—3.0

Involute Gear

16HS

50—3200

1.0—7.0

20HS

300—5000

1.0—7.5

22HS

300—6000

1.0—8.0

25HS

300—8000

1.0—8.0

28HS

400—9600

1.0—8.0

30HS

420—9800

1.0—8.0

35HS

500—11600

1.0—8.0

40HS

750—15000

1.0—8.0

45HS

950—18000

1.0—8.0

50HS

1300—20000

1.0—8.0

55HS

1350—24000

1.0—8.0

60HS

1800—25500

1.0—8.0

65HS

3200—31000

1.0—9.0

70HS

4200—37000

1.0—9.0

75HS

5000—46000

1.0—9.0

85HS

5500—60000

1.0—9.0

   
 

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