Danfoss Series 42 4T Axial Piston Pump

Danfoss Series 42 4T Axial Piston Pump

Danfoss Series 42 4T is available with servo-controlled pumps are available in 28cc or 32cc displacements. We provide Danfoss Series 42 4T Axial Piston Pump repair, sales and maintenance services to keep your machine running at their peak.

 

  • Series: Danfoss Series 42
  • Axial Piston Pump
  • Model Sizes : 28, 41.
  • Nominal Pressure 400 [5800]
  • Maximum Pressure 450 [6525]
  • Model Sizes :32, 51.
  • Nominal Pressure 350 [5075]
  • Maximum Pressure 400 [5800]
  • It is used in, construction, pavers, Crane and material handling, dumpers.

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Danfoss Series 42 4T Axial Piston Pump is designed with a medium-duty system, which features the shortest length in the market and a wide range of flexible, integral product options. S42 pumps are sophisticated hydrostatic machines that can handle high loads of 415 bar [6020 psi] (41 cm3) and 350 bar [5075 psi] (51 cm3). To transfer and regulate hydraulic power, you can integrate these pumps with an appropriate Danfoss motor or other items in a system.

These motors come with a reverse swashplate and the parallel axial piston/slipper concept are used by the Series 42 variable displacement pump, a small, high power density device, to change the pump's displacement. By changing the swashplate's angle, the fluid flow from the pump and the motor output's rotational direction can be reversed. In both forward and backward, Series 42 4T pumps offer an infinitely adjustable speed range from zero to maximum.

Danfoss Series 42 pumps are built with a hydraulic servo control cylinder and a cradle swashplate construction. There are numerous servo controls to choose from. These consist of proportional controls that are either electric or hydraulic, feedback controls that are either mechanically or electrically operated, and an electric control with three positions. These controls function responsively and have minimal hysteresis.

 

Characteristics

  • 400 bar max. application pressure
  • Servo-controlled
  • Wide range of control options
  1. Electric displacement control (EDC)
  2. Forward-Neutral-Reverse (FNR)
  3. Non feedback proportional electric (NFPE)
  4. Mechanical displacement control (MDC)
  5. Non feedback proportional hydraulic (NFPH)

Technical Specifications

Technical Data

Pump configuration Single variable pump
Frame size cm³ 28 32 41 51
Displacement cm³ [in³] 28 [1.71] 31.8 [1.94] 40.9 [2.50] 51 [3.11]
Weight kgf [lbf] 34.5 [76] 34.5 [76] 42 [92] 42 [92]
Mass moment of inertia kg•m² [lbf•ft²] 0.0018 [0.0013] 0.0019 [0.0013] 0.0036 [0.0027] 0.0038 [0.0028]
Type of front mounting flange (SAE flange size per SAE J744) SAE B
Port connections SAE-twin ports, radial
System pressure regulation bar [psi] 140-415 [2030-6017] 140-345 [2030-5003] 140-415 [2030-6017] 140-345 [2030-5003]
Displacement limiters Option
Input shaft options Splined, Round Straight Key
Auxiliary mounting pad (SAE pad per SAE J744) SAE A (9 tooth and 11 tooth), SAE B (13 tooth and 15 tooth)
Control options MDC, FNR, NFPH, NFPE, HC-EDC, EDC
Filtration configuration Suction or charge pressure filtration
Loop flushing Option

 

System Parameters

Case pressure
Rated pressure bar [psi] 3 [44]
Maximum pressure (cold start) bar [psi] 5 [73]

Pressure Limits

Pressure Limits
Frame size cm3 28 32 41 51
Maximum working pressure * bar [psi] 400 [5800] 350 [5075] 400 [5800] 350 [5075]
Maximum pressure bar [psi] 450 [6525] 400 [5800] 450 [6525] 400 [5800]

* Operation above maximum working pressure is permissible with Danfoss application approval.

Inlet Pressure

Inlet Pressure
Continue pressure bar (absolute) [in Hg vacuum] 0.8 [6]
Minimum pressure (cold start) bar (absolute) [in Hg vacuum] 0.2 [24]

Speed Limits

Frame size cm³ 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 3450 3400

 

Charge Pump Displacement and Setting Pressure

Frame size cm³ 28/32 41/51
Charge pump Internal Standard cm3 /rev [in3 /rev] 11 [.67] 15.6 [.92]
External Optional Optional
Charge relief valve settings Standard Optional bar 14 [203] 20 [290]
[psi] 10-24 [145-348] 10-24 [145-348]

 

Theoretical Flow

Frame size cm³ 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]

Product Models

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