Bosch Rexroth | DBAWR40BF2N1X200YS6EG24N9K4R12
DBAWR40BF2N1X/200YS6EG24N9K4R12
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The DBAWR40BF2N1X/200YS6EG24N9K4R12 pump safety block is produced by Bosch Rexroth within the DBA Pump Safety Blocks series. It protects hydraulic pumps by limiting pressure and unloading flow in automated circuits. The unit is built in size NG 40 so it supports medium- to high-flow installations. An ISO 6162-1 version F porting pattern lets the block attach directly to SAE split-flange manifolds without adapters. At port P it withstands operating pressures up to 350 bar, and it passes up to 450 l/min to satisfy large displacement pumps. An integrated check valve stops back-flow toward the pump, while a set pressure of 200 bar defines the relief point for excess pressure. The main spool diameter of 28 mm determines the hydraulic area that balances control forces, and a 1.2 mm damping nozzle moderates spool movement to reduce switching shock.
A 6E spool-type directional valve handles pilot control so remote electrical commands can unload the pump when required. Pilot oil returns externally through port Y, and this return line may see pressures up to 210 bar in the 6EG configuration. The coil connects through an EN 175301-803 K4 plug that provides a sealed electrical interface, and the solenoid operates on a nominal 24 V DC supply for compatibility with common control voltages. Fluid cleanliness must be maintained at 20/18/15 per ISO 4406 to protect the precision-machined lands that meter flow. The pressure line mates with a SAE 1 1/2 in flange connection, simplifying hose or tube routing in pump manifolds. The assembled block weighs 13.6 kg, so installers should provide adequate support hardware when fastening the unit to the power pack.
Technical Specifications
Cleanliness Class
20/18/15 (ISO 4406)
Directional Valve Type
6E (Spool Valve)
Electrical Connector
EN 175301-803 (K4)
Integrated Check Valve
Yes
Main Spool Diameter
28 mm
Mass
13.6 kg
Max Operating Pressure Port P
350 bar
Max Operating Pressure Port Y/t
210 bar (6EG)
Maximum Flow
450 l/min
Nominal Voltage
24 V DC
Nozzle Diameter (switching Damping)
1.2 mm
Pilot Oil Return
External (Y)
Port P/p1 Connection
SAE 1 1/2 in
Porting Pattern
ISO 6162-1 (Version F)
Set Pressure Rating
200 bar
Size Ng
40
1620 Old Apex Road
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