Overview
The Indramat RAC 2.2-200-460-A00-W1 is an AC spindle drive controller from Bosch Rexroth Indramat’s RAC 2 series. This used unit delivers peak power output of 55 kW and 300 A continuous current, with flexible dual-voltage input (400V 50 Hz / 460V 60 Hz) suitable for both European and North American installations. Internal blower cooling and analog ±10 V speed command make it ideal for numerically controlled machine tools.
Key Features
- Rated current: 300 A continuous
- Peak output: 55 kW (continuous regeneration: 37 kW)
- Flexible input: 3 × AC 400 V (50 Hz) or 3 × AC 460 V (60 Hz)
- Speed control: Analog ±10 V via 9-pole terminal X4
- Internal blower cooling for workshop environments
- Modular design compatible with Bosch Rexroth 1MB and 2AD spindle motors
- High stiffness and wide speed range for precision applications
Technical Specifications
| Rated Voltage (Input) | 3 × AC 400 V (50 Hz ±15%) or 3 × AC 460 V (60 Hz) |
| Rated Current | 200 A (on nameplate); 300 A (absolute maximum) |
| Peak Output Power | 55 kW |
| Continuous Output | 55 kW |
| Regeneration Output | 37 kW continuous; 55 kW peak (5 sec) |
| Speed Command | Analog ±10 V |
| Control Interface | 9-pole terminal X4 |
| Cooling | Internal blower / built-in fan |
| Operating Temperature | +5 to +45°C (deration above 55°C) |
| Operating Altitude | ≤1000 m (deration at 2000 m and 5000 m) |
| Humidity Class | F (average ≤70% RH) |
| Weight | 121 kg |
| Series | RAC 2 Spindle Drive Controllers |
| Manufacturer | Bosch Rexroth Indramat |
Typical Applications
The RAC 2.2-200-460-A00-W1 excels in:
- CNC machine tool spindle control (milling, turning, grinding)
- Single-axis spindle positioning with internal control loop
- High-precision machining requiring stiff servo response
- Legacy and retrofit installations compatible with analog CNC systems
- Workshop environments tolerating moderate humidity and dust (humidity class F, IP54 when mounted per standard)
Compatibility & Replacements
Compatible With
- Bosch Rexroth 1MB frameless spindle motors
- Bosch Rexroth 2AD asynchronous main spindle motors
- CNC controls supporting ±10 V analog command interface
- Standard 3-phase AC distribution (50 Hz and 60 Hz mains)
- Industrial machine tool cabinets with standard mounting frames
Replaces / Drop-In Replacement For
- Verify compatibility with original equipment OEM documentation
- Consult with your system integrator to confirm fit with mounted frame and existing wiring harness
- Previous RAC 2 spindle models may have direct swap capability; confirm control cabinet space and connector orientation
Works With
- Analog speed setpoint interface (±10 V command)
- Motor feedback / spindle encoder input for position control loop closure
- Legacy CNC control systems (Siemens, Fanuc, Mitsubishi, etc.)
- RAC 2 modular options: optional encoder inputs and interface boards available at order time
