Technical Information Series 45 G Frame powersolutions.danfoss.com

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1 MAKING MODERN LIVING POSSIBLE Technical Information Series 45 G Frame powersolutions.danfoss.com

2 Contents Frame G Design... 4 Specifications... 5 Performance G74B... 6 Performance G9C... 7 Order code... 8 Controls... 1 Pressure compensated control (PC)... 1 Remote PC control (RP)... 1 Load sensing control (LS) Load sensing control with internal bleed orifice (LB) Input shafts Auxiliary mounting pads SAE-A auxiliary mounting pad SAE-B auxiliary mounting pad Displacement limiter SAE-C auxiliary mounting pad Installation drawings Running cover Adjustable displacement limiter Axial ported endcap Radial ported endcap Rev BA Sep 213

3 This information was removed from: Series 45 Axial Piston Open Circuit Pumps Technical Information Manual 52L519 Rev E November 26 For more information regarding the Series 45 product line refer to the current version of 52L Rev BA Sep 213 3

4 Design Series 45 Frame G pumps have a dual servo piston design with a cradle-type swashplate set in polymer-coated journal bearings. The bias piston increases swashplate angle. The displacement piston decreases swashplate angle. At equal pressure, the larger diameter displacement piston overpowers the bias piston. Nine reciprocating pistons displace fluid from the pump inlet to the pump outlet as the cylinder block rotates on the pump input shaft. The block spring holds the piston slippers to the swashplate via the slipper retainer. The cylinder block rides on a bi-metal valve plate optimized for high volumetric efficiency and low noise. Tapered roller bearings support the input shaft and a viton lip-seal protects against shaft leaks. An adjustable one spool (PC only, not shown) or two spool (LS) control senses system pressure and load pressure (LS controls). The control ports system pressure to the displacement piston to control pump output flow. Frame G cross section LS control (attached to endcap) LS spool LS adjustment PC spool PC adjustment Displacement piston Swashplate Cylinder block Slipper retainer Tapered roller bearing Valve plate Shaft seal Cylinder block spring Tapered roller bearing Input shaft Slipper Piston Bias spring Bias piston guide Bias piston P14 2E Rev BA Sep 213

5 Specifications Features and options Model Feature Unit G74B G9C For general operating parameters, including fluid viscosity, temperature, and inlet and case pressures, see page 13. For system design parameters, including installation, filtration, reservoir, and line velocities, see page 15. Maximum Displacement cm³ [in³] 74 [4.52] 9 [5.49] Flow at rated speed (theoretical) Input torque at maximum displacement (theoretical) Mass moment of inertia of internal rotating components l/min [US gal/min] N m/bar [lbf in/1 psi] kg m² [slug ft²] [46.9] [719].63 [.465] 198 [52.3] [874].65 [.48] Weight Axial ports kg [lb] 29 [63] Radial ports 36 [8] Rotation Clockwise, Counterclockwise Mounting Auxiliary mounting (See page 74) System ports (type) System ports (location) Control types (See page 71) SAE-C SAE-A, SAE-B, SAE-BB, SAE-C 4-bolt split flange Axial, Radial PC, Remote PC, LS, LS with internal bleed Shafts (See page 73) Splined 14 tooth, 17 tooth Displacement limiters (See page 75) Straight Ø mm [1.25 in] Optional, adjustable For definitions of pressure and speed ratings, see page 14. For more information on external shaft loads, see page 16; mounting flange loads, see page 17. Ratings Model Rating Units G74B G9C Input speed 1 minimum min -1 (rpm) 5 5 continuous maximum Working pressure continuous bar [psi] 31 [4495] 26 [377] External shaft loads maximum 4 [58] 35 [575] External moment (M e ) N m [lbf in] 3 [2655] Thrust in (T in ), out (T out ) N [lbf] 29 [65] Bearing life at 14 bar [23 psi] B 1 hours Mounting flange load moments at 21 bar [345 psi] at 26 bar [377 psi] at 31 bar [4495 psi] 211 Vibratory (continuous) N m [lbf in] 158 [14 ] Shock (max) 565 [5 ] 1. Input speeds are valid at 1 bar absolute [ in Hg vac] inlet pressure. See Inlet pressure vs. speed charts. Sound levels 2 For more information on noise levels, see page 19. db(a) 21 bar [345 psi] 26 bar [377 psi] 31 bar [4495 psi] Model 18 min -1 (rpm) Rated speed 18 min -1 (rpm) Rated speed 18 min -1 (rpm) Rated speed G74B C9C Sound data was collected in a semi-anechoic chamber. Values have been adjusted (-3 db) to reflect anechoic levels Rev BA Sep 213 5

6 Performance G74B Flow vs. speed 2 5 Flow and power data valid at 49 C [12 F] and viscosity of 17.8 mm²/sec [88 SUS]. Flow (l/min) Flow (US gal/min) Input power vs. speed Speed min (rpm) P14 4E Power (kw) bar [377 psi] 21 bar [345 psi] 14 bar [23 psi] Power (hp) The chart on the right shows allowable inlet pressure and speed at various displacements. Greater speeds and lower inlet pressures are possible at reduced displacement. Operating outside of acceptable limits reduces pump life Speed min (rpm) Inlet pressure vs. speed Inlet Pressure (bar abs) Shaft Speed min (rpm) P14 5E 1% 9% 8% (psi gauge) (in Hg vac) P14 15E Rev BA Sep 213

7 Performance G9C Flow and power data valid at 49 C [12 F] and viscosity of 17.8 mm²/sec [88 SUS]. Flow vs. speed Flow (l/min) Flow (US gal/min) Input power vs. speed Speed min (rpm) P14 6E Power (kw) bar [3698 psi] 186 bar [2697 psi] 124 bar [1798 psi] Power (hp) The chart on the right shows allowable inlet pressure and speed at various displacements. Greater speeds and lower inlet pressures are possible at reduced displacement. Operating outside of acceptable limits reduces pump life. Inlet pressure vs. speed Inlet Pressure (bar abs) Speed min (rpm) % 9% 8% Shaft Speed min (rpm) P14 7E (psi gauge) (in Hg vac) P14 15E Rev BA Sep 213 7

8 Order Code R S P C D E F G H L M N J K R GR S L R P 74B 9C C PC BC RP BP LS BS LB BB Product G Frame, variable displacement open circuit pump Rotation Left hand (counterclockwise) Right hand (clockwise) Displacement and pressure rating 74 cm³/rev [4.52 in³/rev], 31 bar [4495 psi] continuous working pressure 9 cm³/rev [5.49 in³/rev], 26 bar [377 psi] continuous working pressure Control type Pressure compensated control 1-28 bar [ psi] Pressure compensated control bar [ psi] Remote pressure compensated control 1-28 bar [ psi] Remote pressure compensated control bar [ psi] Load sensing / pressure compensating control 1-28 bar [ psi] Load sensing / pressure compensating control bar [ psi] Load sensing / pressure compensating control with internal bleed orifice 1-28 bar [ psi] Load sensing / pressure compensating control with internal bleed orifice bar [ psi] D PC setting (2 digit code, 1 bar increments) Example 1 = 1 bar to 31 bar [145 to 4495 psi] (74B) to 26 bar [145 to 377 psi] (9C) E Load sensing setting (2 digit code, 1 bar increments) Example 2 = 2 bar to 4 bar [145 to 435 psi] NN Not applicable (use with PC controls) F NN Not used Not applicable Rev BA Sep 213

9 Order Code (continued) R S P C D E F G H L M N J K G N H Pilot orifice Standard Gain orifice 3 Standard J1 Input shaft S1 14 tooth, 12/24 pitch (ANSI B Class 5) S2 17 tooth, 12/24 pitch (ANSI B Class 5) K4 Ø mm [1.25 in], straight keyed J2 N A T B V C J3 Auxiliary mounting flange None SAE-A, 9-tooth coupling SAE-A, 11-tooth coupling SAE-B, 13-tooth coupling SAE-BB, 15-tooth coupling SAE-C, 14-tooth coupling System port size and location Code Location Port type Inlet size Outlet size 2 Radial 4-bolt split-flange 2 in. 1 in. 4 Axial 4-bolt split-flange 2 in. 1 in. K1 A K2 Shaft seal Single lip seal, viton Mounting flange and housing port style 1 SAE-C 4-bolt, SAE O-ring boss housing ports K3 N L NNN AAA CAA M NNN N NNN Not used Not applicable Displacement limiter None Adjustable, factory set at max angle (74B) Adjustable, factory set at max angle (9C) Special hardware None Special features None Rev BA Sep 213 9

10 Controls Specifications Pressure compensated control (PC) PC control setting range Model bar psi G74B G9C Response/recovery times* (ms) Response Recovery G74B G9C 4 14 * For definitions, see page 9. Schematic diagram PC schematic M2 B Legend B = Outlet S = Inlet L1, L2 = Case drain M2 = System pressure gauge port M4 = Servo pressure gauge port L2 M4 S L1 P Remote PC control (RP) Specifications PC control setting range Model bar psi G74B G9C Response/recovery times* (ms) Response Recovery G74B G9C 4 14 * For definitions, see page 1. Schematic diagram Remote PC schematic X X Legend B = Outlet S = Inlet L1, L2 = Case drain M2 = System pressure gauge port M4 = Servo pressure gauge port X = Remote PC port M2 B L2 M4 S L1 P Rev BA Sep 213

11 Controls (continued) Specifications Load sensing control (LS) PC setting range Model bar psi G74B G9C Response/recovery times* (ms) Response Recovery G74B 35 1 G9C 4 13 * For definitions, see page 11 Schematic diagram LS Schematic X LS setting range Model bar psi All X M2 B Legend B = Outlet S = Inlet L1, L2 = Case drain M2 = System pressure gauge port M4 = Servo pressure gauge port X = LS signal port L2 M4 S L1 P Load sensing control with internal bleed orifice (LB) Specifications PC setting range Model bar psi G74B G9C Response/recovery times* (ms) Response Recovery G74B 35 1 G9C 4 13 * For definitions, see page 11. Schematic diagram LB Schematic LS setting range X Model bar psi All X M2 B Legend B = Outlet S = Inlet L1, L2 = Case drain M2 = System pressure gauge port M4 = Servo pressure gauge port X = LS signal port L2 M4 S L1 P Rev BA Sep

12 Input Shafts Shaft data Code S1 Description 14 tooth spline 12/24 pitch (ANSI B Class 5) Maximum torque rating¹ N m [lbf in] 734 [65] Drawing 47.6 ±.6 [1.84 ±.24] [1.5] max [1.167] pitch 14 teeth 12/24 pitch 3` pressure angle fillet root side fit Compatible with ANSI b Class 5 also mates with flat root side fit Ø31.14 ±.8 [1.226 ±.3] Ø28 ±.15 [1.12 ±.6] Mounting flange 8 ±.8 [.31 ±.3] Coupling must not protrude beyond this point P14 32E S2 17 tooth spline 12/24 pitch (ANSI B Class 5) 117 [9] ±.6 [1.874 ±.24] 3.75 max [1.211] [1.417] pitch 17 teeth 12/24 pitch 3` pressure angle fillet root side fit compatible with ANSI b Class 5 also mates with flat root side fit Ø36.66 ±.8 [1.443 ±.3] Mounting flange Ø34 ±.15 [1.339 ±.6] 8 ±.8 [.31 ±.3] Coupling must not protrude beyond this point P14 33E K4 Ø mm [1.25 in] Straight keyed 734 [6495] 48.6 ±.6 [1.89 ±.24] A [ ] Sq. Key x lg [1.125] 35.2 ±.13 [1.39 ±.1] Mounting flange 8 ±.8 [.31 ±.3] A Ø31.72 ±.2 [1.249 ±.1] Coupling must not protrude beyond this point Section A-a P14 34E 1. See Input shaft torque ratings, page 18 for an explanation of maximum torque Rev BA Sep 213

13 Auxiliary Mounting Pads SAE-A auxiliary mounting pad Dimensions See page 18 for mating pump pilot and spline dimensions [4.19] 53.2 [2.9] Coupling-sae 11t: 11 tooth spline, 16/32 pitch [.6875] pitch ø Fillet root side fit Per ANSI b , Class 6 Coupling-sae: 9 tooth spline, 16/32 pitch [.5625] pitch ø Fillet root side fit Per ANSI b , Class 6 A Min coupling Clearance [1.95] 132 [5.2] Mounting Flange Approximate Center of Gravity 6 [.24] Ø88.6 [3.49] Ø [ ] O-ring seal required Ref [3.239] i.d [.13] cross section 3/8-16 unc-2b THD 17.8 [.7] min THD depth 2x 1.9 [.77] 58.5 [2.3] P14 42E Specifications Coupling 9-tooth 11-tooth Spline minimum 13.5 mm [.53 in] 15 mm [.59 in] engagement Maximum torque 17 N m [95 lbf in] 147 N m [13 lbf in] Dimension A 21.1 mm [.83 in] 16.1 mm [.63 in] SAE-B auxiliary mounting pad Dimensions See page 18 for mating pump pilot and spline dimensions. 87 [3.43] 174 [6.85] Coupling-sae b-b: 15 tooth spline, 16/32 pitch [.9375] pitch ø Fillet root side fit per ANSI b , class 6 Coupling-sae b: 13 tooth spline, 16/32 pitch [.8125] pitch Fillet root side fit per ANSI b , Class 6 A min coupling clearance [1.78] 132 [5.2] Mounting flange Ø15.64 [4.16] 6 [.24] 1/2-13 unc-2b Thd thru 19.7 [.76] min the depth 2x Ø [ ] O-ring seal required Ref [3.989] i.d [.7] cross section 146 [5.75] 73 [2.87] Approximate center of gravity 1.3 [.5] 11±.13 [.43±.1] 54.1 [2.13] P14 71E Specifications Coupling 13-tooth 15-tooth Spline minimum 14.2 mm [.56 in] 18.9 mm [.74 in] engagement Maximum torque 249 N m [22 lbf in] 339 N m [3 lbf in] Dimension A 2.7 mm [.81 in] 12.7 mm [.5 in] Rev BA Sep

14 Auxiliary Mounting Pads (continued) See page 18 for mating pump pilot and spline dimensions. SAE-C auxiliary mounting pad Dimensions [2.88] Coupling-SAE C: 14 tooth spline, 16/32 pitch (1.1667) pitch ø Flat root side fit Per ANSI B , Class [1.89] [5.77] [.4] [5.31] Min coupling clearance 1/2-13 UNC-2b THD thru 22.7 [.89] min thd depth 4x Mounting flange 57.3 [2.26] Ø [5.18] 6 [.24] [4.51] Ø [5.1 ] Specifications Approximate center of gravity 57.3 [2.26] [4.51] O-ring seal required Ref [4.379] i.d [.7] cross section 14 ±.13 [.551 ±.5] 1.3 [.51] Ø57.1 [2.25] Min shaft clearance P14 72E Coupling Spline minimum engagement Maximum torque 14-tooth 18.3 mm [.72 in] 339 N m [3 lbf in] Displacement limiter G Frame open circuit pumps are available with an optional adjustable displacement limiter. This adjustable stop limits the pump s maximum displacement. Displacement limiter cross-section Setting range G74B G9C 56 to 74 cm³ [3.39 to 4.52 in³] 68 to 9 cm³ [4.12 to 5.49 in³] P See Input shaft torque ratings, page 19 for definitions of continuous and maximum torque Rev BA Sep 213

15 Installation Drawings Running cover Dimensions [1.4] 128 [5.4] Mounting flange 6 [.24] Approximate center of gravity P16 78E Adjustable displacement limiter Dimensions MAX [8.218] [4.5] P14 73E Rev BA Sep

16 Installation Drawings (continued) Axial ported endcap Case drain port L1 7/ [2.86] 45 [1.77] 21.3 [.84] LS signal Port X alternate 6.7 [2.39] LS signal Port X Ø5.8 [2] System port S (Inlet port) 27 Bar [3 PSI] Split flange boss Per ISO 6162 SAE J518 (CODE 61) with 1/2-13 UNC x 27 [1.63] Min THD Ø25.4 [1] System port B (Outlet port) 345 Bar [3 PSI] Split flange boss Per ISO 6162 SAE J518 (CODE 61) with 3/8-16 UNC x 27 [.866] Min THD LS signal port X 7/16-2 UNF System ports S and B [8.97] [4.5] X [.62] R1 MAX [.4] [5.6] 7 [.28] [3.62] [2.62] [1.463] Ø ±.25 [4.999 ±.1] [4.79] [1.688] 4 [1.57] Clockwise rotation 45 [1.77] [1.31] System pressure gage port M2 7/16-2 UNF 11 [4.33] 12.7 [.5] 96 [3.78] Case drain Port L2 Case drain port L2 7/ [4.75] 45 [1.77] 73 [2.87] 151 [5.94] P16 174E Counterclockwise rotation Third-angle projection mm [in] Rev BA Sep 213

17 Installation Drawings (continued) Axial ported endcap (continued) Pc pressure adjustment LS standby Pressure adjustment Ls signal port x Alternate 7/16-2 UNF [4.5] Servo pressure gage port M4 7/16-2 UNF Ø14.3 [.56] Approximate center of gravity [5.6] [4.51] Cw Ccw [2.25] 96 [3.78] Case drain port L [2.25] [4.51] P14 74e Third-angle projection mm [in] Rev BA Sep

18 Installation Drawings (continued) Radial ported endcap Case drain port L1 7/ [2.86] 45 [1.77] 6.7 [2.39] LS SIGNAL PORT X 21.3 [.84] LS SIGNAL PORT X ALTERNATE LS signal port X 7/16-2 UNF [1.8] [8.38] [4.5] X [.62] R1 MAX [.4] [5.6] SYSTEM PORT S (inlet) System Port B (outlet) [1.463] 6 [.24] Ø ±.25 [4.999 ±.1] [4.79] 82 [3.23] 75 [2.95] Clockwise rotation Ø25.4 [1] System port B (outlet port) 345 Bar [5 PSI] Split flange boss Per ISO 6162 SAE J518 (CODE 61) with 3/8-16 UNC x 27 [.866] MIN THD Case drain port L2 7/ [4.88] System pressure gage port M2 7/16-2 UNF [4.75] 12.7 [.5] 96 [3.78] Case drain Port L2 45 [1.77] System Port B (outlet) System Port S (inlet) 75 [2.95] Outlet 82 [3.23] Inlet P16 175E 75 [2.95] 82 [3.23] Counterclockwise rotation Third-angle projection mm [in] Rev BA Sep 213

19 Installation Drawings (continued) Radial ported endcap (continued) Servo pressure gage port M4 7/16-2 UNF PC pressure Adjustment LS standby Pressure adjustment LS signal port X Alternate 7/16-2 UNF [4.5] Ø14.3 [.56] Approximate center of gravity [5.6] [4.51] CW CCW 96 [3.78] Case drain port L [2.25] [2.25] [8.49] [4.51] Ø5.8 [2] System port S (Inlet port) 27 Bar [3 PSI] Split flange boss Per ISO 6162 SAE J518 (Code 61) with 1/2-13 UNC x 27 [1.63] MIN THD P14 75E Third-angle projection mm [in] Rev BA Sep

20 Products we offer: Bent Axis Motors Closed Circuit Axial Piston Pumps and Motors Displays Electrohydraulic Power Steering Electrohydraulics Hydraulic Power Steering Integrated Systems Joysticks and Control Handles Microcontrollers and Software Open Circuit Axial Piston Pumps Orbital Motors PLUS+1 GUIDE Proportional Valves Sensors Steering Transit Mixer Drives Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electronic components. We specialize in providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market. Building on our extensive applications expertise, we work closely with our customers to ensure exceptional performance for a broad range of off-highway vehicles. We help OEMs around the world speed up system development, reduce costs and bring vehicles to market faster. Danfoss Your Strongest Partner in Mobile Hydraulics. Go to for further product information. Wherever off-highway vehicles are at work, so is Danfoss. We offer expert worldwide support for our customers, ensuring the best possible solutions for outstanding performance. And with an extensive network of Global Service Partners, we also provide comprehensive global service for all of our components. Please contact the Danfoss Power Solution representative nearest you. Comatrol Schwarzmüller-Inverter Turolla Valmova Hydro-Gear Daikin-Sauer-Danfoss Local address: Danfoss Power Solutions US Company 28 East 13th Street Ames, IA 51, USA Phone: Danfoss Power Solutions GmbH & Co. OHG Krokamp 35 D Neumünster, Germany Phone: Danfoss Power Solutions ApS Nordborgvej 81 DK-643 Nordborg, Denmark Phone: Danfoss Power Solutions 22F, Block C, Yishan Rd Shanghai 2233, China Phone: Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved Rev BA Sep Danfoss A/S, 213-9