MSS381B-0025-FA-N0CN-NNNN Bosch Rexroth Indramat
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MPN: R911324255
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The Bosch Rexroth Indramat MSS381B-0025-FA-N0CN-NNNN is a stator for synchronous kit spindle motors, part of the MSS Synchronous IndraDyn H Motors series. It features a stator-cooling jacket with liquid cooling, an axial cooling connection, and insulation class F. The standard design includes a 1.5 meter power cable with flying leads and provides a rated speed of 250 min-1 at a permissible ambient temperature of 0 to 40 °C.
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Product Description:
The MSS381B-0025-FA-N0CN-NNNN is a stator for synchronous kit spindle motors manufactured by Bosch Rexroth Indramat as part of the MSS Synchronous IndraDyn H Motors series. Supplied as the stationary portion of an IndraDyn H interior permanent-magnet machine, the unit is installed directly in machine frames where compact spindle designs are needed. When paired with a matching rotor and drive, the stator establishes the electromagnetic field that produces the low-speed, high-torque rotation needed for contour cutting, drilling, and other precision machining processes.
The electrical interface uses a 1.5 m power cable that terminates in flying leads, allowing the conductors to be routed inside the housing before the final connector is added. Thermal management uses a stator-cooling jacket connected to the machine’s fluid circuit. This liquid cooling system removes heat near the windings and supports continuous overload duty. The jacket ports are oriented axially to match the motor’s axial cable connection layout, keeping the electrical and cooling connections at one end of the spindle. The stator has an IP00 protection rating because it is intended to be installed inside a sealed spindle housing. The assembly is supplied without a motor encoder, so the completed motor must use a separate method of obtaining the feedback required by the drive. The windings use Class F insulation, which supports a maximum winding temperature of 155 °C under suitable operating conditions.
The stator has frame length B, which establishes its installation envelope within the machine spindle. Winding variant 0025 provides the electrical resistance and inductance characteristics expected by the compatible IndraDrive controller. At a rated operating speed of 250 rpm, the liquid-cooled motor assembly can deliver full torque without exceeding its thermal limits when installed and operated correctly. The permitted surrounding temperature range is 0 to +40 °C, so the machine enclosure and cooling circuit must maintain the stator within those limits during operation.
Frequently Asked Questions about MSS381B-0025-FA-N0CN-NNNN:
Q: What type and length of power cable is supplied with the MSS381B-0025-FA-N0CN-NNNN?
A: This model is equipped with a 1.5 meter long power cable with flying leads.
Q: What type of casing design does the MSS381B-0025-FA-N0CN-NNNN use?
A: A stator-cooling jacket is used for this motor, supporting liquid cooling.
Q: How is cooling achieved on the MSS381B-0025-FA-N0CN-NNNN motor?
A: The cooling system utilizes a liquid cooling method and connects axially.
Q: Does the MSS381B-0025-FA-N0CN-NNNN include a motor encoder?
A: No motor encoder is included in this version.
Q: What is the rated speed of the MSS381B-0025-FA-N0CN-NNNN?
A: This motor offers a rated speed of 250 min-1 for operation.
