Bosch Rexroth | FESXE40CA-1X500LK0B1M
FESXE40CA-1X/500LK0B1M
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The FESXE40CA-1X/500LK0B1M throttle valve belongs to the FES Throttle Valves series and is produced by Bosch Rexroth for hydraulic automation systems that require controlled bidirectional flow. With a valve size of 40, it supports a nominal flow of 500 L/min at a 10 bar differential, while the maximum flow from port A to B at the same pressure drop reaches 680 L/min to meet peak demand. The unit operates reliably up to 315 bar, and it tolerates inlet pressures down to 15 bar in the A-to-B direction and 20 bar in the reverse path, allowing consistent throttling across common circuit variations. Acceptable fluid viscosity ranges from 15 to 380 mm²/s, and the fluid temperature window spans from −20 °C to +80 °C, enabling use with mineral-oil media in diverse ambient conditions.
For pilot control, the x port can receive pressures up to 315 bar, yet the pilot oil flow at the control position remains at or below 0.3 L/min to limit energy loss. During shifting, 12 cm³ of pilot oil is required, and the dedicated Y port handles up to 10 L/min to return pilot oil without back-pressure. Cleanliness demands follow ISO 4406 class 20/18/15 for the main flow path and class 17/15/12 for the pilot stage to protect internal components. Together, these pilot and cleanliness parameters support precise spool movement and long service intervals in high-pressure manifolds where accurate throttling and low auxiliary consumption are critical.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Cleanliness Class (pilot Valve)
ISO 4406 17/15/12
Max Flow (a To B, Δp 10 Bar)
680 L/min
Max Fluid Temperature
+80 °C
Max Operating Pressure
315 bar
Max Pilot Oil Flow In Y
10 L/min
Max Pilot Pressure (x Port)
315 bar
Min Fluid Temperature
-20 °C
Min Inlet Pressure A (a To B)
15 bar
Min Inlet Pressure B (b To A)
20 bar
Nominal Flow (Δp 10 Bar)
500 L/min
Pilot Oil Flow At Control Position
≤ 0.3 L/min
Pilot Oil Volume For Switching
12 cm³
Valve Size
40
Viscosity Max
380 mm²/s
Viscosity Min
15 mm²/s
1620 Old Apex Road
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