Bosch Rexroth | FESE63CA-3X1800LK0B1M
FESE63CA-3X/1800LK0B1M
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The FESE63CA-3X/1800LK0B1M throttle valve belongs to the FES Throttle Valves series and is manufactured by Bosch Rexroth for regulating large flows in hydraulic automation loops. Valve size 63 defines the cavity dimensions and the maximum port cross-section available for main flow. A DIN ISO 7368 mounting interface permits direct installation in standardized cartridge manifolds. An area ratio of 1.6:1 between control lands sets the metering gradient and influences pressure gain. With a pressure drop of 10 bar the main stage passes up to 1800 L/min, enabling high-throughput circuits. Ports a and b withstand continuous operating pressures of 315 bar, matching modern high-pressure power units. Reliable opening requires at least 20 bar when flow moves from a to b, while reverse flow needs 25 bar to maintain stability. Mineral oil of the HL or HLP type is specified as the working fluid to ensure lubrication and seal compatibility.
The FESE63CA-3X/1800LK0B1M accepts proportional commands through a B1 voltage interface, allowing direct connection to standard analog controllers. Electrical power and feedback are routed via a DIN 43651 plug coded K0, which provides keyed, vibration-resistant wiring. The pilot stage handles up to 17 L/min through port Y so the main spool can shift quickly during dynamic duty cycles. Pilot supply at port x may reach 315 bar, making a separate low-pressure line unnecessary. A pilot oil volume of 52 cm³ is required for a full 0–100 percent stroke, a figure useful for sizing accumulator assist circuits. Return flow from port Y drains to tank at 0 bar, preventing back pressure that could slow closure. All dynamic seals are produced from NBR material, designated M, to provide compatibility with common hydraulic fluids. The complete assembly weighs 21.2 kg, an important factor for handling equipment and manifold support.
Technical Specifications
Area Ratio (14:15)
1.6:1
Command Interface
B1 (Voltage)
Electrical Connection
DIN 43651 Plug (K0)
Hydraulic Fluid
Mineral Oil (HL, HLP)
Max Flow (∆p=10 Bar)
1800 L/min
Max Operating Pressure (a,b)
315 bar
Max Pilot Oil Flow (port Y)
17 L/min
Max Pilot Pressure (x)
315 bar
Min Inlet Pressure (a→b)
20 bar
Min Inlet Pressure (b→a)
25 bar
Mounting Interface
DIN ISO 7368
Pilot Oil Volume (0→100%)
52 cm3
Return Flow Pressure (port Y)
0 bar (to tank)
Seal Material
NBR (M)
Valve Size
63
Weight
21.2 kg
1620 Old Apex Road
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