Bosch Rexroth | SYDFEN-2X028R-PKC62N00-0000-A0R0VXX
SYDFEN-2X/028R-PKC62N00-0000-A0R0VXX
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The SYDFEN-2X/028R-PKC62N00-0000-A0R0VXX is a hydraulic unit in the SYD Hydraulic Control Systems series produced by Bosch Rexroth for automated fluid power circuits. It rotates clockwise, which matches right-hand drive arrangements in common machine layouts. Displacement is specified at 28 cm³, defining the fluid volume moved during each shaft revolution. The housing filling quantity of 0.7 l indicates the oil needed to prime the interior before startup. Without a through-drive the mass is 20.5 kg, a figure used to verify mounting loads on support structures. The keyed shaft supports a maximum drive torque of 137 Nm so couplings must be selected to withstand that value. At 1500 rpm with maximum displacement the unit can deliver 42 l/min, which assists in sizing downstream actuators. A 3/4 in SAE pressure port and a 1 1/4 in SAE suction port provide standardized connections for high-pressure delivery and low-velocity intake, respectively.
Under nominal speed the maximum flow increases to 84 l/min, allowing higher circuit throughput when required. The maximum operating pressure is 280 bar, establishing the upper limit for relief valve adjustment and pipe strength. At these conditions the unit can transmit 39 kW of hydraulic power, a reference for selecting the prime mover. When the displacement is reduced it may run up to 3600 rpm, enabling compact systems that rely on higher shaft speed. With displacement set to its maximum the speed limit drops to 3000 rpm to preserve efficiency and component life. A hydraulic torque output of 125 Nm at 280 bar assists designers in calculating load balance on driven equipment. The minimum permissible speed is 250 rpm, ensuring internal lubrication and avoiding slip at very low flow. A moment of inertia of 0.0017 kg·m² helps determine acceleration and deceleration profiles in closed-loop control schemes.
Technical Specifications
Direction Of Rotation
Clockwise (R)
Displacement
28 cm³
Housing Filling Quantity
0.7 l
Mass (without Through-drive)
20.5 kg
Max Drive Torque (keyed Shaft)
137 Nm
Max Flow (1500 Rpm, Vg Max)
42 l/min
Max Flow (nnom, Vg Max)
84 l/min
Max Operating Pressure
280 bar
Max Power (nnom, Vg Max)
39 kW
Max Speed (vg < Vg Max)
3600 rpm
Max Speed (vg Max)
3000 rpm
Max Torque (Δp=280 Bar)
125 Nm
Minimum Speed
250 rpm
Moment Of Inertia
0.0017 kg·m²
Pressure Port Size (sae)
3/4 in
Suction Port Size (sae)
1 1/4 in
1620 Old Apex Road
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