Danfoss Series 42 - Technical Specifications; Pump Specifications Overview

Specifications
General specifications
Product line Series 42 pumps
Pump type In-line, axial piston, positive displacement variable pumps including cradle
swashplate and servo control
Direction of input rotation Clockwise or counterclockwise available
Installation position Pump installation recommended with the control at the top or side. Consult Danfoss
for non-conformance guidelines. Housing must always be filled with hydraulic fluid.
Filtration configuration Suction or charge pressure filtration
Other system requirements Independent braking system, suitable reservoir and heat exchanger.
Hardware specifications
Model 28 32 41 51
Pump configuration Single pump Single pump Single pump Single pump
Displacement
cm
3
/rev [in
3
/rev]
28 [1.71] 31.8 [1.94] 41 [2.50] 51 [3.11]
Mass kg [lbm] 34.5 [76] 34.5 [76] 42 [92] 42 [92]
Case pressure
Rated pressure bar [psi] 3.4 [50]
Maximum pressure (cold start) bar [psi] 10.5 [150]
Speed limits
Frame size cm
3
28 32 41 51
Minimum speed min¯¹ (rpm) 500 500 500 500
Rated speed at maximum displacement min¯¹ (rpm) 3400 3000 3200 2900
Maximum speed at maximum displacement min¯¹ (rpm) 3750 3400 3600 3400
System pressure
Frame size cm
3
28 32 41 51
Rated pressure bar [psi] 385 [5584] 385 [5584] 385 [5584] 350 [5076]
Maximum pressure bar [psi] 415 [6019] 415 [6019] 415 [6019] 385 [5584]
Theoretical flow
Frame size cm
3
28 32 41 51
Theoretical flow at rated speed l/min [US gal/min] 95.2 [25.1] 95.4 [25.2] 131 [34.6] 148 [39.1]
Inlet pressure
Rated pressure (absolute) bar [in Hg vacuum] 0.8 [6]
Minimum pressure (absolute) (cold start) bar [in Hg vacuum] 0.2 [24]
Service Manual Series 42 Axial Piston Closed Circuit Pumps
Technical Specifications
22 520L0638 • Rev 0300 • July 2015