Product Description:

The 1MS241H-6D-A1 is a modular stator element manufactured for the 1MB High-Speed Asynchronous Motors series. As a frameless spindle motor component, it generates the rotating magnetic field needed to drive high-speed machining spindles when paired with a matching rotor. In automated milling, drilling, and grinding centers, this stator can be integrated directly into the machine housing, which helps save space and reduce inertial mass compared with a housed motor assembly.

Thermal management is handled by a liquid cooling circuit that circulates coolant through the stator jacket and keeps winding temperatures under control during continuous high-speed duty. Electrical power is fed through a 1.5 m loom that exits at the stator end, which simplifies routing inside the spindle housing and removes the need for a separate terminal box. The mechanical envelope corresponds to frame size 241, giving an outer diameter that matches standardized motor seats. Electromagnetic characteristics are set by winding code 6D, which sets the wire gauge and number of turns for the required voltage and frequency range. An integrated aluminum cooling jacket surrounds the windings and provides structural rigidity together with a conductive path for heat transfer to the coolant.

The overall axial length follows motor length code H, so the stator can fit spindle layouts that need a longer active stack without changing frame diameter. Classified as a stator for a 1MB frameless spindle motor, the unit mates with separate rotors and sensor packages to form a complete spindle assembly. Matching rotor components are available from Bosch Rexroth Indramat within the 1MB High-Speed Asynchronous Motors series, allowing the motor package to be built directly into the spindle structure instead of relying on a separate motor housing.