Product Description:

The 1MS200C-4A-A1 is a stator subassembly produced by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. As the stationary portion of a frameless spindle motor, it carries the copper windings and integrated cooling passages. These elements generate the rotating magnetic field required for high spindle speeds in automated machining centers and other industrial drives.

The stator is manufactured in frame size 200, giving it an outer diameter that aligns with spindle housings designed for medium-power machine-tool axes. Its motor length code of C denotes the mid-length lamination stack within the 1MB lineup, balancing torque output and axial space. The laminated core is surrounded by an aluminum cooling jacket that forms the outer wall of the coolant channel, allowing heat to be removed directly at the stator surface. Active temperature control is provided by the integral liquid cooling circuit; circulating coolant maintains winding temperatures during extended high-speed operation. Electrical performance is tailored by winding variant 4A, a coil design that provides the voltage constant and current rating needed for high-acceleration spindles.

The stator is supplied with a 1.5 m loom that is routed through the stator end, giving installers pre-terminated leads long enough to reach terminal boxes without additional splices. Delivered as a Stator for 1MB Frameless Spindle Motor, it mates directly with a matching rotor and end cap to form a compact spindle assembly once centered in the machine housing. When integrated, the manufacturing quality provided by Bosch Rexroth Indramat and the dimensional standards of the 1MB High-Speed Asynchronous Motors series help maintain concentricity between stator and rotor, ensuring the thermal and magnetic characteristics outlined above remain stable across the duty range.