Bosch Rexroth | SY2DFE1-20071-07100746404
SY2DFE1-20/071-071/00746404
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The SY2DFE1-20/071-071/00746404 is a hydraulic control unit produced by Bosch Rexroth within the SYD Hydraulic Control Systems series for closed-loop automation. It meters fluid volume and pressure to actuators in mobile or industrial machinery. The main pump displacement is 71 cm³, and an attachment pump with the same 71 cm³ displacement supplies auxiliary circuits. Minimum shaft speed is 250 rpm, ensuring reliable priming during startup. Maximum speed reaches 2200 rpm at full displacement, while 2600 rpm is permitted when the displacement is reduced below Vg Max. When operated at 1500 rpm and maximum displacement, the pump delivers 107 l/min, and flow rises to 156 l/min at nominal speed. System pressure can be carried up to 280 bar, establishing the upper limit for hydraulic power transfer.
The unit produces a peak torque of 316 Nm at a pressure differential of 280 bar, and the rotating group has a moment of inertia of 0.0083 kg·m² to allow rapid acceleration changes. Available power is 50 kW at 1500 rpm under full pressure, increasing to 73 kW at nominal speed for high-demand cycles. Drive-side bearings accommodate axial forces up to 2400 N and radial forces up to 1900 N, supporting pulley or gear couplings without external supports. Mass is 37.5 kg in the standard configuration; adding a through-drive raises total mass to 40.5 kg for tandem pump arrangements.
Technical Specifications
Attachment Pump Displacement
71 cm³
Main Pump Displacement
71 cm³
Mass With Through-drive
40.5 kg
Mass Without Through-drive
37.5 kg
Max Axial Force
2400 N
Max Flow At 1500 Rpm And Vg Max
107 l/min
Max Flow At Nnom And Vg Max
156 l/min
Max Operating Pressure
280 bar
Max Power At 1500 Rpm (Δp 280 Bar)
50 kW
Max Power At Nnom (Δp 280 Bar)
73 kW
Max Radial Force
1900 N
Max Speed At Vg < Vg Max
2600 rpm
Max Speed At Vg Max
2200 rpm
Max Torque (Δp 280 Bar)
316 Nm
Min Speed
250 rpm
Moment Of Inertia
0.0083 kg·m²
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