Bosch Rexroth | 4WRKE16W6-125L-3X6EG24ETK31A5D3M
4WRKE16W6-125L-3X/6EG24ETK31/A5D3M
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The 4WRKE16W6-125L-3X/6EG24ETK31/A5D3M directional valve is part of the 4WRKE Directional Valves series from Bosch Rexroth. It modulates hydraulic flow to actuators in closed-loop automation circuits. The nominal size of 16 defines the port geometry required for medium frame manifolds, while a nominal flow of 125 L/min at a 10 bar pressure drop provides the baseline delivery rate. A maximum permissible flow of 460 L/min extends capacity for short-term peak demands, and a maximum operating pressure of 350 bar lets the valve operate in high-pressure systems. The linear spool characteristic yields a proportional relation between spool stroke and flow, which pairs with a ±10 V command signal to simplify integration with analog controllers. Response sensitivity held to 0.5 percent supports fine positioning, and hysteresis no greater than 1 percent preserves repeatability during bidirectional moves.
The valve electronics run on a 24 V DC supply and draw up to 72 W, data that guides cabinet power sizing. A plug conforming to DIN EN 175201-804 forms the electrical connection, and an IP65 housing rating shields the unit from dust and water jets. NBR seals are fitted to cope with common mineral-oil fluids, and the pilot oil is both supplied and drained internally, removing external pilot piping. Hydraulic cleanliness must reach ISO 4406 (c) 20/18/15 to protect the precision spool edges from contamination wear. The assembled unit weighs 11.2 kg, a factor to consider for manifold support brackets.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 (c) 20/18/15
Command Signal Input
±10 V
Electrical Connection
DIN EN 175201-804
Hysteresis
≤1 %
Ip Protection
IP65
Max Operating Pressure (p, A, B)
350 bar
Max Permissible Flow
460 L/min
Nominal Flow (Δp=10 Bar)
125 L/min
Nominal Size
16
Pilot Oil Supply/drain
Internal/Internal
Power, Max
72 W
Response Sensitivity
≤0.5 %
Seals
NBR
Spool Characteristic
Linear (L)
Supply Voltage
24 V DC
Weight
11.2 kg
1620 Old Apex Road
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