Product Description:

The MSS142B-0700-FA-N0CN-NNNN is a frameless stator-rotor assembly produced by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. Supplied as a kit, it is integrated directly into the machine housing so machine builders can create high-torque, direct-drive axes without additional couplings or bearings. In industrial automation, this arrangement reduces drivetrain compliance and improves positioning accuracy, making the unit well suited for rotary tables, printing cylinders, and similar precision stages.

The unit follows an open kit motor design, exposing windings that must be cooled through the internal liquid circuit. To maintain thermal stability, the stator requires a coolant flow of 4.0 L/min. Inlet and outlet connections are provided by G 1/8 and M16 × 1 axial threads, which simplify hose routing in compact housings. Coolant pressure must remain below 6 bar, while the motor produces a pressure drop of 1.4 bar across the cooling jacket. Because the assembly has an IP00 protection rating, it relies entirely on the host enclosure for protection against contact, debris, and moisture. Ten mounting holes on the front face and M6 × 12 mm fixing threads at the stator flange provide repeatable alignment. An identical thread is reserved for the ground conductor so the magnetic core can be bonded to the machine frame.

When energized, the magnetic circuit exerts an axial force of 265 N and a radial force of 635 N, which must be accommodated when selecting the supporting bearings. The motor operates at ambient temperatures from 0 °C to 40 °C and can be installed at altitudes up to 1,000 m without derating. Acoustic emissions remain below 75 dB(A), supporting operation in production cells where machine noise must be controlled. The minimum ambient temperature of 0 °C, combined with the open-frame design, may require controlled cabinet heating during extended idle periods to prevent condensation around the exposed assembly.