Sauer Danfoss 42 Pump

Model NO.
42 pump
Straight Shaft Swashplate Piston Type
Pressureoil
Radial Plunger Pump Type
Hydraulic Piston Pump
Model
42
Application
Construction Machinery
Original
Yes
Transport Package
Wooden Case for Export
Specification
hydraulic
Trademark
FOCOR
Origin
China
HS Code
8413503190
Production Capacity
2000 Sets/Month
Reference Price
$ 270.00 - 1,350.00
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Product Description

Sauer Danfoss 42 pump


Sauer 42 pump
 
Hydraulic piston pump Sauer Danfoss 42R series 42R28, 42R32, 42R41, 42R51
42L series 42L28, 42L32, 42L41, 42L51
Description  
Size 28, 32, 41, 51
Series 42
Maximum loads of 345 bar (5000 psi)
Control types: MDC, FNR, NFPH, NFPE, HC-EDC, EDC
 
Variable displacement axial piston pump of swash plate design The Series 42 pumps are advanced hydrostatic units designed for "medium power" applications with maximum loads of 350 bar (5000 psi). These pumps can be combined with a suitable Sauer-Sundstrand motor or other products in a system to transfer and control hydraulic power. The Series 42 variable displacement pump is a compact, high power density unit, using the parallel axial piston / slipper concept in conjunction with a tillable swash plate to vary the pump's displacement. Reversing the angle of the swash plate reverses the flow of oil from the pump, and thus reverses the direction of rotation of the motor output. Series 42 pumps provide an infinitely variable speed range between zero and maximum in both forward and reverse modes of operation. Series 42 pumps utilize a cradle swash plate design with a hydraulic servo control cylinder. Control is provided through a compact servo control system. A choice of servo controls are available.
These include mechanically- or electrically-actuated feedback controls, hydraulic or electric proportional controls, and a three-position electric control. These controls are designed for low hysteresis and responsive performance.
- Series 42 - Advanced Technology Today
- 2 Sizes of Variable Displacement Pumps
- Complete Family of Control Systems
- Proven Reliability and Performance
- Optimum Product Configurations
- Compact Profile
- Quiet Operation
  • Worldwide Sales and Service
 
Technical Data 
Table of values (theoretical values, without efficiency and tolerances; values rounded)
Size 28 32 41 51
Displacement    cm3[in3] 28 [1.71] 31.8 [1.94] 40.9 [2.50] 51 [3.11]
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 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 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
weight  kgf [lbf ] 34.5 [76] 34.5 [76] 42 [92] 42 [92]

 
Manual displacement control (MDC)
The Manual Displacement Control (MDC) converts a mechanical input signal to a hydraulic signal. The hydraulic signal positions the servo piston, tilting the swash plate to vary the pump's displacement and flow direction. The position of the swash plate is proportional to the mechanical input signal. The control has mechanical feedback that regulates the servo valve in relation to swash plate position to maintain displacement at the commanded level regardless of changes in system pressure.
The servo control valve has variable geometry porting to regulate swash plate response relative to input command. The control performs small displacement change commands with maximum controllability throughout the entire stroking range of the pump. It completes large displacement change commands with rapid swash plate response. Optional servo supply and drain orifices are available for special response needs.
Electrical displacement control (HC-EDC)
The High Current Electrical Displacement Control (HC-EDC) uses two Proportional Pressure Reducing Valves(PPRV) to provide reducing pilot pressure. The PPRV converts an electrical input signal to a hydraulic input signal to operate a spring centered sensing piston. The sensing piston produces a mechanical input to the servo control valve in the pump housing, which ports hydraulic pressure to either side of the servo piston. The position of the swash plate is proportional to the electrical input signal. The control has mechanical feedback that regulates the servo valve in relation to swash plate position to maintain displacement at the commanded level regardless of changes in system pressure. Any swash plate position error is fed back to the servo control valve for instant correction.
Electrical displacement control (EDC)
The Electrical Displacement Control (EDC) uses an electro hydraulic Pressure Control Pilot (PCP) stage to provide a differential pilot pressure. The PCP stage converts an electrical input signal to a hydraulic input signal to operate a spring centered sensing piston. The sensing piston produces a mechanical input to the servo control valve which ports hydraulic pressure to either side of the servo piston. The servo piston operates the swash plate varying the pump's displacement and flow direction.
The position of the swash plate is proportional to the electrical input signal. The control has mechanical feedback that regulates the servo valve in relation to swash plate position to maintain displacement at the commanded level regardless of changes in system pressure. Any swash plate position error is fed back to the servo valve for instant correction.
Sauer Danfoss 42 Pump

 

 

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