MSS242D-0070-FA-N0CN-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MSS242D-0070-FA-N0CN-NNNN is a stator for synchronous kit spindle motors and is part of the MSS Synchronous IndraDyn H Motors series. It features a frame size of 242 and frame length D, with liquid cooling using a stator-cooling jacket and permissible ambient temperature from 0 to 40 degrees Celsius. The product has insulation class F, a rated speed of 700 min-1, and uses an axial cable-conducted connection.
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Product Description:
The MSS242D-0070-FA-N0CN-NNNN is a stator section produced by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. As the stationary section of a synchronous kit spindle motor, it produces the magnetic field that interacts with the rotor to generate controlled motion. This arrangement supports high-precision spindle axes in automated machining centers and other industrial equipment where the motor components are integrated directly into the machine.
This stator has a frame size of 242, giving it a large active diameter that accommodates a correspondingly sized rotor for high torque at lower rotational speeds. Its rated speed is 700 rpm, so the drive controller must maintain synchronous operation within this limit. Heat generated in the windings is removed through liquid cooling, with coolant circulating through the stator jacket to control operating temperature. Both coolant ports are positioned axially for straightforward manifold routing. The inlet port has a G 1/4 thread, while the outlet uses an M22 × 1.5 thread, providing standard hydraulic connections for the cooling circuit. Power reaches the windings through a 1.5 m power cable with flying leads, and the cable exits axially to reduce the required installation depth. Winding variant 0070 establishes the electrical arrangement used with compatible drive controllers. The standard mechanical design and lack of a motor encoder accommodate applications that use an external position feedback system.
The winding insulation meets class F, allowing conductor temperatures up to 155 °C when the liquid circuit keeps the stator jacket within its permitted thermal limits. The stator has an IP00 protection rating because the kit motor is intended for installation inside a protected machine housing rather than operation as a separately enclosed motor. Acceptable ambient temperatures range from 0 to +40 °C, matching the controlled conditions commonly maintained inside machine tools with filtered air and coolant systems. The mechanical stack has a frame length of D, which provides the required axial build length when the stator is paired with its rotor and end-shield assembly. Its large active diameter supports the torque demands of spindle applications without requiring an independently housed motor assembly.
