1MS241D-6C-A1 Bosch Rexroth Indramat
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MPN: R911270939
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The Bosch Rexroth Indramat 1MS241D-6C-A1 is a stator for the 1MB Frameless Spindle Motor, belonging to the 1MB High-Speed Asynchronous Motors series. It features a frame size of 241, a D code motor length, and uses liquid cooling with an aluminum cooling jacket. The stator includes a 1.5 meter loom connection cable conducted through the stator end and has a 6C winding variant.
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Product Description:
The 1MS241D-6C-A1 is a stator subassembly produced by Bosch Rexroth Indramat for high-speed spindle applications. As the stationary portion of a frameless asynchronous motor, it carries the copper windings that create the rotating magnetic field needed to drive machine-tool spindles and other precision automation axes. When integrated into a motor housing, the stator supports compact spindle designs that can maintain constant torque at elevated operating speeds. Because the rotor and housing are supplied separately, the unit is well suited to custom spindle assemblies with tightly controlled space and cooling paths.
A factory-installed connection harness simplifies wiring, and the lead exits the stator end as a 1.5 m loom, giving enough reach for direct routing to the inverter without intermediate junctions. The harness also reduces the need for separate terminal hardware inside tight spindle cavities. Heat produced by the windings is removed through liquid cooling, which supports higher current density than air-cooled designs and helps manage thermal load during sustained high-speed operation. Mechanical dimensions follow a 241 frame size, which sets the outside diameter used to align the stator with the matching rotor and bearing supports. Axial length is identified by length code D, and the selected winding variant 6C sets the conductor cross-section and turns per phase for use with a suitable controller.
The assembly is classified as a stator for a 1MB frameless spindle motor, so it is supplied without endbells or bearings and is intended to be enclosed by the machine builder. An integrated aluminum cooling jacket surrounds the lamination stack and transfers heat to the circulating coolant, which helps keep temperatures stable along the core. The jacket also provides a rigid outer surface that can fit closely into the surrounding spindle structure. It belongs to the 1MB High-Speed Asynchronous Motors series, which keeps the dimensions aligned with corresponding rotors in the same platform.
