4WRZE16E150-7X/6EG24ETK31/F1D3M

Manufacturer: Bosch Rexroth

Material #: R900979566

Features

Pilot-operated, 2-stage proportional directional valves with integrated electronics (OBE) Control of the direction and magnitude of a flow Operation by means of proportional solenoids with central thread and detachable coil For subplate mounting: Porting pattern according to ISO 4401 Optional auxiliary operating device Spring-centered control spool

Product Description

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Valves of type 4WRZ(E)... are pilot-operated 4-directional valves that are actuated by means of proportional solenoids. Their function is to control the flow direction and size.

Valves of type 5WRZ(E)... are equipped with an additional port "R" (only NG52).

Set-up:

The valve basically consists of:

Pilot control valve (9) with proportional solenoids (5 and 6)

Main valve (10) with main control spool (11) and centering spring (12)

Function:

With de-energized solenoids (5, 6), the main control spool (11) is held in the central position by means of the centering spring (12)

The main control spool (11) is controlled by the pilot control valve (9); the main control spool is proportionally moved, e.g. by actuating solenoid "b" (6)

→ The control spool (2) is moved to the right, pilot oil enters the pressure chamber (13) via the pilot control valve (9) and deflects the main control spool (11) proportionally to the electric input signal

→ Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics

Pilot oil supply to the pilot control valve internally via port P or externally via port X

Switching off the solenoid (6)

→ The control spool (2) and main control spool (11) are moved back into the central position

Depending on the spool position, flow occurs from P to A and B to T or P to B and A to T (R)

An optional manual override (14 and 15) can be used to move the control spool (2) without solenoid energization.

Notice:

Accidental activation of the manual override may lead to uncontrolled machine movements!

Notice:

Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.

The Bosch Rexroth 4WRZE16E150-7X/6EG24ETK31/F1D3M (R900979566) is a high-performance pilot-operated proportional directional valve designed for controlling the flow direction and size in hydraulic systems. This valve is characterized by its ability to be actuated by proportional solenoids, ensuring precise control over fluid dynamics within a wide range of applications. The 4WRZE16E150-7X/6EG24ETK31/F1D3M features a main valve with a main control spool and centering spring, along with a pilot control valve that directs the movement of the main spool. With de-energized solenoids, the main control spool remains in the central position due to the centering spring. Upon energization, the pilot control valve moves the main control spool proportionally to the electric input signal, allowing for meticulous modulation of flow. This model includes an additional port R designed specifically for NG size configurations and offers progressive flow characteristics through orifice-type cross-sections. The pilot oil can be supplied internally via port P or externally through port X, providing flexibility in system design. An optional manual override feature allows for manual actuation of the control spool, although caution is advised as accidental use may result in uncontrolled machine movements. The Bosch Rexroth 4WRZE16E150-7X/6EG24ETK31/F1D3M valve is engineered for subplate mounting with a porting pattern according to ISO standards. It supports maximum operating pressures up to bar and can handle maximum flows up to l/min. Its integrated electronics OBE facilitate smooth operation and reliable performance across various hydraulic applications. Note that internal leakage inherent to this design may increase over its lifecycle. This component belongs to series X, confirming its place within a lineage of robust and innovative hydraulic components from Bosch Rexroth.