SPM Inverter Modules

SPM Inverter Modules are Bosch Rexroth Indramat spindle amplifier modules used in SERVODYN-T modular drive systems for CNC and industrial spindle-control applications. The series operates within a shared DC-bus architecture, where the SPM module functions as the inverter stage rather than a standalone general-purpose drive. Different output classes allow the spindle amplifier to be matched to the machine’s required current and power demand, supporting scalable system design across multiple spindle configurations. SPM units are intended to work with the proper supply module and related SERVODYN-T drive hardware, forming a coordinated modular drive package for spindle operation. Overall, the series is best suited for legacy machine installations where the spindle inverter section must align with the original SERVODYN-T system architecture, cabinet layout, and selected output capacity.