Overview
The Rexroth Bosch GZ45-4 125V solenoid coil (R900021543) is a precision electromagnetic component designed for activation and control of NG6 (CETOP 3) nominal size directional control valves in industrial hydraulic systems. This solenoid coil converts electrical input into mechanical valve actuation, enabling reliable directional control and automation in heavy-duty hydraulic machinery.
Key Features
- 125V AC/DC coil voltage rating for industrial electrical systems
- GZ45-4 form factor compatible with NG6 directional control valves
- Compact, robust design for harsh industrial environments
- Direct replacement for equivalent Rexroth coil applications
- Manufactured by Bosch Rexroth, a global leader in hydraulic automation
Technical Specifications
- Model: GZ45-4
- Part Number: R900021543
- Voltage Rating: 125V
- Manufacturer: Bosch Rexroth
- Valve Compatibility: NG6 (CETOP 3) directional control valves
- Condition: New – No Box
- Application Type: Hydraulic solenoid valve coil
Typical Applications
- Industrial machinery directional control valve actuation
- Heavy-duty hydraulic systems and presses
- Mobile equipment and construction machinery hydraulics
- Manufacturing automation and material handling systems
- Process control in industrial production environments
Compatibility & Replacements
Compatible With
- Rexroth NG6 (CETOP 3) directional control valves
- 4/3 directional control valve assemblies with GZ45-4 coil mounting
- Industrial hydraulic systems requiring 125V solenoid activation
- Bosch Rexroth valve families utilizing standard GZ45 coil interface
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or valve documentation before ordering, as GZ45-4 coils are available in multiple voltage configurations (24V, 110V, 125V, etc.). This unit is designed as a direct replacement for equivalent 125V GZ45-4 solenoid coil applications.
Works With
- Rexroth 4/3 proportional and directional control valves
- NG6 and CETOP 3 standard solenoid interfaces
- Industrial PLC and hydraulic control systems
- 12-bit proportional valve electronics (where applicable)

