Sauer Danfoss pompy hydrauliczne.pdf

General Gear Pumps and Motors

Technical Information

Group 3

OVERVIEW

Sauer-Danfoss’ Group 3 Series of gear pumps and motors uses an external spur gear, and

positive displacement design pump of proven high pressure and eficiency. Constructed

of three-piece aluminum body, it has been repeatedly proven, with over 30 years

experience in hydraulic products for mobile and industrial applications.

The extruded aluminum housing provides the necessary strength construction while

providing a very high power to weight ratio and increased heat dissipation.

Its aluminum housing permits the gear teeth to cut in toward the inlet side and create

their own path for maximum radial gear tip seal and high volumetric eficiency.

The Group 3 Series is composed of the SNP3 gear pump and two motors:

the bidirectional SNM3 and unidirectional SNU3. They look like this:

F005 033

F005 045

DESIGN

Super inished shaft journals, loating pressure plates,

and Telon coated large DU bearings are protected by an

extruded aluminum alloy gear housing. The one-piece

shaft is set within a high-strength aluminum lange and

cover, open to numerous options, including.

F005 034

FEATURES

Special features within Group 3 family include:

• wide range of displacements (from 22 to 90 cm 3 /rev [1.34 to 5.49 in 3 /rev] for pumps

and motors)

• SAE, DIN, and European standard mounting langes

• high quality case hardened steel gears

• pressure plates that provide eficiency at all speeds

• contact force between bearing face and gear is low and precisely controlled

• volumetric eficiencies in the range of 95%

• multiple pump conigurations in combination with SNP1, SNP2 and SNP3.

DKMH.PK.610.A1.02 • 520L0557 • Rev. A • 10/2003

General Gear Pumps and Motors

Technical Information

Group 3 – Technical data

TECHNICAL DATA FOR

PUMPS

This table details Group 3 technical data for the SNP3 gear pump. The SNP3 is a standard

Group 3 product. For further information about application and coniguration of gear

pumps and motors, please see Sauer-Danfoss publication Group 3 Gear Pumps Technical

Information, 520L0569.

Technical data – Group 3 gear pumps

Pump model

22 26 33 38 44 48 55 63 75 90

Displacement

cm 3 /rev

[in 3 /rev]

22.1

[1.35]

26.2

[1.60]

33.1

[2.02]

37.9

[2.32]

44.1

[2.93]

48.3

[2.93]

55.1

[3.36]

63.4

[3.87]

74.4

[4.54]

88.2

[5.38]

SNP3

Peak pressure

bar

[psi]

270

[3910]

270

[3910]

270

[3910]

270

[3910]

270

[3910]

250

[3625]

250

[3625]

230

[3350]

200

[2910]

170

[2465]

Rated pressure

250

[3625]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

230

[3350]

230

[3350]

210

[3045]

180

[2610]

150

[2175]

Minimum speed min -1

(rpm)

800 800 800 800 800 800 800 600 600 600

Maximum speed

3000 3000 3000 3000 3000 3000 2500 2500 2500 2500

Weight

[lb]

6.8

[15.0]

6.8

[15.0]

7.2

[15.8]

7.3

[16.1]

7.5

[16.5]

7.6

[16.8]

7.8

[17.3]

8.1

[17.9]

8.5

[18.7]

8.9

[19.6]

Moment of inertia of

rotating components

x 10 -6 kg•m 2

[x 10 -6 lbf•ft 2 ]

198

[4698]

216

[5126]

246

[5838]

267,2

[6340]

294,2

[6891]

312,2

[7408]

342,3

[8123]

378,3

[8977]

426,4

[10118]

486,5

[11545]

Theoretical low at

maximum speed

l/min

[US gal/min]

66.3

[17.5]

78.6

[20.8]

99.3

[26.2]

113.7

[30.0]

132.3

[35.0]

144.9

[38.3]

137.8

41.6]

157.5

[41.6]

186

[49.1]

220.5

[58.3]

SEP3

Peak pressure

bar

[psi]

230

[3350]

230

[3350]

230

[3350]

230

[3350]

200

[2910]

Rated pressure

210

[3045]

210

[3045]

210

[3045]

210

[3045]

180

[2610]

Minimum speed min -1

(rpm)

1000 1000 1000 1000 800

Maximum speed

3000 3000 3000 2800 2600

–

[lb]

5.7

[12.57]

5.8

[12.79]

6.1

[13.45]

6.2

[13.67]

6.4

[14.11]

Weight

Moment of inertia of

rotating components

x 10 -6 kg•m 2

[x 10 -6 lbf•ft 2 ]

198

[4698]

216

[5126]

246

[5873]

294.2

[6981]

312.2

[7408]

Theoretical low at

maximum speed

l/min

[US gal/min]

66.3

[17.5

78.6

[20.8]

99.3

[26.2]

113.7

[30.0]

132.3

[35.0]

DKMH.PK.610.A1.02 • 520L0557 • Rev. A • 10/2003

General Gear Pumps and Motors

Technical Information

Group 3 – Technical data

TECHNICAL DATA FOR

MOTORS

This table details Group 3 technical data for the SNP3 gear motors. For further

information about application and coniguration of gear motors, please see Sauer-

Danfoss publication Gear Motors Technical Information, 520L0568.

Technical data – Group 3 gear motors

Motor model

22 26 33 38 44 48 55 63 75 90

Displacement

cm 3 /rev

[in 3 /rev]

22.1

[1.35]

26.2

[1.60]

33.1

[2.02]

37.9

[2.32]

44.1

[2.69]

48.3

[2.93]

55.2

[3.36]

63.4

[3.87]

74.4

[4.54]

88.2

[5.38]

SNU3 (unidirectional)

Peak pressure

bar

[psi]

270

[3915]

270

[3915]

270

[3915]

270

[3915]

270

[3915]

250

[3625]

230

[3335]

210

[3045]

190

[2755]

170

[2465]

Rated pressure

250

[3625]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

230

[2800]

210

[3045]

190

[2755]

170

[2465]

150

[2175]

800 800 800 800 800 800 800 600 600 600

Maximum speed 2500 2500 2500 2500 2300 2300 2300 2300 2100 2100

SNM3 (bidirectional) motor in parallel

Peak pressure

bar

[psi]

270

[3915]

270

[3915]

270

[3915]

270

[3915]

270

[3915]

250

[3625]

230

[3335]

210

[3045]

190

[2755]

170

[2465]

Rated pressure

250

[3625]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

230

[2800]

210

[3045]

190

[2755]

170

[2465]

150

[2175]

800 800 800 800 800 800 800 800 800 800

Maximum speed 2500 2500 2500 2500 2300 2300 2300 2300 2100 2100

SNM3 (bidirectional) motor in series

Peak pressure

bar

[psi]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

230

[3335]

210

[3045]

190

[2755]

170

[2465]

150

[2175]

Rated pressure

250

[3625]

250

[3625]

250

[3625]

250

[3625]

250

[3625]

230

[2800]

210

[3045]

190

[2755]

170

[2465]

150

[2175]

Minimum speed min -1

(rpm)

800 800 800 800 800 800 800 800 800 800

Maximum speed

2500 2500 2500 2500 2300 2300 2200 2100 2100 2100

All (SNU3, SNM3)

Weight

[lb]

6.8

[15.0]

6.8

[15.0]

7.2

[15.8]

7.3

[16.1]

7.5

[16.5]

7.6

[16.8]

7.8

[17.3]

8.1

[17.9]

8.5

[18.7]

8.9

[19.6]

Moment of inertia of

rotating components

x 10 -6 kg m 2

[x 10 -6 lbf•ft 2 ]

198

[4698]

216

[5126]

246

[5837]

267.2

[6341]

294.2

[6981]

312.2

[7408]

342.3

[8123]

378.3

[8977]

426.4

[10 118]

486.5

[11 545]

DKMH.PK.610.A1.02 • 520L0557 • Rev. A • 10/2003

Minimum speed min -1

(rpm)

Minimum speed min -1

(rpm)

General Gear Pumps and Motors

Technical Information

Group 3 – Gear pump dimensions

SNP3 – CO01, CI01 AND

SC01

Standard porting

This drawing shows the standard porting for CO01, CI01 and SC01.

[in]

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Maximum shaft torque in Nm [lbf•in]: CO01 = 350 [3097], CI01 = 210 [1858] and

SC01 = 290 [2566]

SNP3 – CO01, CI01 and SC01 dimensions

Type (displacement) 22 26 33 38 44 48 55 63 75 90

63.0

[2.480]

64.5

[2.539]

67.0

[2.637]

68.8

[2.708

71.0

[2.795]

72.5

[2.854]

75.0

[2.952]

78.0

[3.070]

82.0

[3.228]

87.0

[3.425]

Dimension

132.5

[5.216]

135.5

[5.334]

140.5

[5.531]

144.0

[5.669]

148.5

[5.846]

151.5

[5.964]

156.5

[6.161]

162.5

[6.397]

170.5

[6.712]

180.5

[7.106]

C 20 [0.787]

27 [1.063]

36 [1.417]

Inlet

D 40 [1.575]

51 [2.007]

62 [2.441]

M10

20 [0.787]

27 [1.063]

Outlet

40 [1.575]

51 [2.001]

M10

Example of model code: SNP3/33 S CO01 ..._. and SNP3/33 S CI01 ..._. and

SNP3/33 S SC01 ..._.

For further details on ordering, see Model codes, page 8.

DKMH.PK.610.A1.02 • 520L0557 • Rev. A • 10/2003

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General Gear Pumps and Motors

Technical Information

Group 3 – Gear pump dimensions

SNP3 – CO02, CI02 AND

SC02

Standard porting

This drawing shows the standard porting for CO02, CI02 and SC02

[in]

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Maximum shaft torque in Nm [lbf•in]: CO02 = 350 [3097], CI02 = 210 [1858] and

SC02 = 290 [2566]

SNP3 – CO02, CI02 and SC02 dimensions

Type (displacement) 22 26 33 38 44 48 55 63 75 90

63.0

[2.480]

64.5

[2.539]

67.0

[2.637]

68.8

[2.708

71.0

[2.795]

72.5

[2.854]

75.0

[2.952]

78.0

[3.070]

82.0

[3.228]

87.0

[3.425]

Dimension

132.5

[5.216]

135.5

[5.334]

140.5

[5.531]

144.0

[5.669]

148.5

[5.846]

151.5

[5.964]

156.5

[6.161]

162.5

[6.397]

170.5

[6.712]

180.5

[7.106]

C 20 [0.787]

27 [1.063]

36 [1.417]

Inlet

D 40 [1.575]

51 [2.007]

62 [2.441]

M10

20 [0.787]

27 [1.063]

Outlet

40 [1.575]

51 [2.001]

M10

Example of model code: SNP3/33 S CO02 ..._. and SNP3/33 S CI02 ..._. and

SNP3/33 S SC02 ..._.

For further details on ordering, see Model codes, page 8.

DKMH.PK.610.A1.02 • 520L0557 • Rev. A • 10/2003

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