BOSCH SM 25/50-TCT – DC 560V / 25A Servo Drive Module | Rexroth Indramat Series
Engineering Background
The BOSCH SM 25/50-TCT is a high-performance servo drive power module engineered for demanding closed-loop motion control applications in industrial automation. Developed under the Bosch Rexroth / Indramat platform, this module delivers precise torque and velocity regulation across a wide range of servo motor configurations, making it a cornerstone component in CNC machining centers, robotics, and process automation lines.
Product Positioning
Designed for procurement engineers and maintenance teams sourcing verified replacement or expansion modules for existing Bosch Rexroth drive systems. The SM 25/50-TCT bridges legacy Indramat infrastructure with modern servo performance requirements, offering a cost-effective alternative to full system replacement while maintaining OEM-level reliability.
Complete Technical Specifications
| Part Number | SM 25/50-TCT |
| Manufacturer Reference | 06231-103 |
| Brand / OEM | Bosch Rexroth (Indramat) |
| Module Type | Servo Drive Power Module |
| DC Bus Voltage | DC 560 V |
| Continuous Output Current | 25 A |
| Peak Output Current | 50 A |
| Control Mode | TCT (Transistor Chopper Technology) |
| Country of Origin | Germany |
| Weight | 780 g |
| HS Code | 8537100000 |
| Condition | New / Surplus / Refurbished (specify on inquiry) |
Proven Application Environments
- CNC machining centers and turning / milling systems
- Industrial robotics and multi-axis servo systems
- Injection molding and press automation
- Packaging and material handling lines
- Printing and converting machinery
- Semiconductor and precision assembly equipment
Engineering Advantages
- Dual-range current rating (25 A / 50 A): Supports both continuous and peak torque demands without derating in typical industrial duty cycles.
- TCT switching technology: Transistor Chopper Technology ensures low harmonic distortion and high efficiency across the full speed range.
- DC 560 V bus compatibility: Direct integration with standard Bosch Rexroth power supply units (PSU) and regenerative supply modules.
- Compact modular form factor: Slot-in design reduces panel space and simplifies multi-axis drive cabinet layouts.
- OEM-grade reliability: Manufactured to Bosch Rexroth quality standards with full traceability via part reference 06231-103.
System Architecture & Signal Flow
The SM 25/50-TCT operates as a slave axis module within the Bosch Rexroth Indramat drive system architecture. DC bus power is supplied by a dedicated power supply module (e.g., TVD or TVM series). The servo module receives velocity and torque commands via the system bus interface, processes feedback from the motor encoder, and outputs PWM-controlled three-phase current to the servo motor. Fault status, enable signals, and diagnostic data are exchanged through the drive controller (e.g., CLM, DDC, or DKC series).
Sourcing & Quality Verification
- All units sourced through verified industrial surplus and authorized distribution channels.
- Pre-shipment inspection includes visual check, label verification (part number + date code), and functional power-on test where applicable.
- Original manufacturer packaging or anti-static protective packaging used for all shipments.
- Certificate of conformity and test report available on request.
- Traceability documentation (batch / lot records) available for OEM and Tier-1 customers.
Procurement Process
- Submit your RFQ via support@konmask.com or place order directly on Konmask.com.
- Receive stock confirmation and lead time within 1 business day.
- Pro-forma invoice issued; payment via T/T, PayPal, or trade credit (approved accounts).
- Shipment via DHL / FedEx / UPS with full tracking; export documentation included.
- 30-day return policy for unused, uninstalled units in original condition.
Technical FAQ
Q: Is the SM 25/50-TCT compatible with Indramat TDM and KDS drive controllers?
A: Yes. The SM 25/50-TCT is designed for use within the Indramat modular drive family and is compatible with TDM, KDS, and equivalent controller modules sharing the same DC bus architecture.
Q: What is the difference between the 25 A and 50 A ratings?
A: 25 A is the continuous (RMS) output current rating for sustained operation. 50 A is the peak current available for short-duration acceleration or torque bursts, typically up to 400 ms depending on thermal conditions.
Q: Can this module be used as a direct replacement for a failed unit?
A: Yes, provided the replacement unit carries the same part number (SM 25/50-TCT) and manufacturer reference (06231-103). Always verify firmware / hardware revision compatibility with your drive controller before installation.
Q: Do you provide warranty?
A: All units carry a 90-day functional warranty against defects in materials and workmanship under normal operating conditions. Extended warranty available on request.
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