Description
1. Product Description
The Bosch SPM 25-T/A, part number 052313-105, is a spindle amplifier module in the SERVODYN-T drive system. It is designed to control spindle motor operation in CNC machine tools and other industrial machining applications. The module provides controlled electrical power to a compatible spindle motor, supporting machine operations that require regulated speed and torque.
The module is rated for a 520 V DC link and a nominal current of 25 A. It belongs to a modular drive platform in which the spindle module operates alongside compatible power-supply and servo modules. Correct installation depends on the drive system configuration, motor specifications, control interface, and original module settings.
Before replacing an existing unit, verify the complete part number, including 052313-105, and compare the configuration of switches S1 and S2 and the plug-in module at position IC6 with the original unit. The SPM 25-T/A must not be fitted with a diagnostic module. Confirm the supplied accessories and terminal arrangements before installation.

SPM 25-T/A
2. Product Parameters — Datasheet
Brand: Bosch
Model: SPM 25-T/A
Part Number: 052313-105
Series: SERVODYN-T
Product Name: Spindle Amplifier Module
Module Type: Spindle drive amplifier
Rated DC Link Voltage: 520 V DC
Rated Current: 25 A
Primary Function: Spindle motor drive control
Application: CNC machine tools and industrial spindle systems
Drive Architecture: Modular drive system
Cooling: Forced-air cooling with integrated fan, depending on configuration
Diagnostic Module: Must not be installed in the SPM 25-T/A configuration
Configuration Settings: Check S1 and S2 against the original module
Plug-in Module: Verify the module installed at position IC6 against the original unit
Power Supply Compatibility: Requires a compatible SERVODYN-T power module
Motor Compatibility: Confirm the spindle motor specifications and drive configuration
Dimensions: Approximately 380 × 100 × 320 mm (H × W × D); confirm against the exact unit drawing
Weight: Approximately 7–12 kg, depending on configuration and included accessories
Place of Manufacture: Not confirmed for the individual unit
Country of Origin: Verify from the product nameplate and shipping documentation
Product Status: Legacy industrial drive component; confirm whether the offered unit is tested, refurbished, or untested
Discontinued: Current manufacturer lifecycle status not confirmed
Installation Requirements: Verify DC bus connections, motor wiring, protective grounding, cooling clearance, switch settings, and compatible drive components before commissioning.
3. Recommended Bosch SERVODYN-T Models
The following are related spindle amplifier modules and drive components for maintenance and sourcing. Current ratings, module types, and part numbers differ, so these models should not be treated as direct replacements without checking the original drive documentation.
- Bosch SPM 25-TB — SERVODYN-T spindle amplifier module rated at 520 V DC and 25 A.
- Bosch SPM 25-TD — SERVODYN-T spindle amplifier module rated at 520 V DC and 25 A; verify diagnostic and configuration requirements.
- Bosch SPM 25 — Related spindle amplifier module for compatible drive configurations.
- Bosch SPM 35 — Spindle amplifier module in a different current class.
- Bosch SPM 50-TB — SERVODYN-T spindle amplifier module rated at 520 V DC and 50 A.
- Bosch SPM 50-TD — Related 50 A spindle amplifier module.
- Bosch SPM 100-TB — SERVODYN-T spindle amplifier module rated at 520 V DC and 100 A.
- Bosch SPM 100-TD — Related 100 A spindle amplifier module.
- Bosch SM 5/10-TC — SERVODYN drive module for compatible servo applications.
- Bosch SM 10/20-TC — Servo amplifier module for compatible SERVODYN systems.
- Bosch SM 15/30-TC — Servo amplifier module for industrial motor control.
- Bosch SM 25/50-TC — Higher-current servo amplifier module for compatible drive configurations.
- Bosch 052313-105 — Exact part-number reference for matching the original SPM 25-T/A module.
- Bosch 052313-109 — Related SPM 25-T/A part-number variant; verify configuration and interchangeability.
- Bosch 052313-110 — Related SPM 25-T/A part-number variant; confirm the original module’s settings and hardware before substitution.
For replacement sourcing, match the exact part number, drive series, 520 V DC rating, 25 A current class, switch settings, IC6 plug-in module, and required accessories. Do not select a substitute by voltage and current alone.
