Product Description:

The 1MS310F-6A-A1 stator is manufactured by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. Designed as a frameless spindle element, this stator is intended for integration into machine tool spindles and other high-speed drives where a separate rotor is mounted on the same shaft. In industrial automation, it serves as the stationary electromagnetic field generator, accepting three-phase inverter current and converting it into the rotating field required for precise speed regulation during milling, drilling, or grinding operations. This arrangement allows the surrounding spindle housing to provide the mechanical support while the stator supplies the magnetic field used for torque production.

The 310 frame size sets the dimensions of the laminated core and cooling jacket so they fit housings in that outside diameter class. The motor length code F indicates a longer lamination stack, which increases copper volume and supports higher continuous output. Thermal management relies on liquid cooling circulated through the jacket, allowing the spindle to maintain stable winding temperatures under high power density. Power leads exit as a 1.5 m loom that is already terminated, removing the need for field assembly inside the enclosure and simplifying integration into the machine.

The stator shell incorporates an aluminum cooling jacket that presents low thermal resistance between the windings and the coolant, maintaining a narrow temperature gradient even during rapid load changes. Electromagnetic characteristics follow winding variant 6A, with wire gauge and turns count matched to the voltage and frequency range of 1MB drives. It is a stator for 1MB frameless spindle motors used in high-speed spindle systems. The connection route is through the stator end, which keeps the flexible leads and sensor lines clear of the rotating assembly and protects the connection cable from centrifugal forces.