Product Description:

The MRS142F-1N-0058-NNNN is a synchronous servo motor built by Bosch Rexroth Indramat for the MRS Synchronous IndraDyn H Motors series. It provides electronically commutated torque for precision axes where gearboxes are undesirable, enabling direct coupling of the load to the drive shaft. Its open-frame construction allows installation inside sealed machine housings or air-conditioned electrical cabinets. The motor is suited to packaging, printing, and material-handling equipment that requires accurate speed and position control under continuous duty.

The motor belongs to size 142, a diameter class that establishes its outer envelope, while the axial stack height corresponds to the F frame length. Dynamic response is influenced by a moment of inertia of 0.017 kg·m², which balances rapid acceleration with rotational stability. Powertrain coupling is supported by a rotor bore of 58 mm, allowing shafts or hubs to pass through without secondary machining. The motor has a total mass of 8.9 kg, which eases mounting requirements and limits the weight added to the machine structure during installation.

Mechanical fixation uses a plain drilling mounting style, so the housing provides untapped holes that accommodate application-specific fasteners or adapter flanges. The electromagnetic topology inside the lamination stack contains 4 pole pairs, producing eight magnetic poles that synchronize precisely with inverter output frequencies. The winding set and core are left unenclosed; consequently, the motor carries a protection rating of IP00 and must be installed where contamination and accidental contact are controlled. Typical applications include direct-drive tables, rotary indexing stations, and high-speed spindles that require a compact form factor and consistent torque delivery. Its hollow-bore arrangement also supports machine layouts that route shafts, cables, or process equipment through the center of the motor.