1MR240B-A072

The 1MR240B-A072 rotor from Bosch Rexroth Indramat is part of the 1MB High-Speed Asynchronous Motors series and is engineered for frameless spindle applications in high-performance industrial drives. Key specifications include an Inside Diameter of Rotor: 72 mm, a Motor Length: B, and a Motor Size: 240. This product is designed to deliver precise, high-speed rotation as the primary component of an asynchronous motor, enabling efficient torque transmission and seamless integration with stator assemblies.

Featuring a Rated Torque: 62 Nm at a Maximum Speed: 4000 rpm, the 1MR240B-A072 ensures robust performance under demanding conditions. It operates at a Nominal Voltage: 122 V and incorporates a Stator Winding Resistance: 0.213 Ω for optimized power consumption. The rotor mass of 19 kg contributes to stable inertia management, while its frameless design allows direct coupling to spindle bearings without added housing. Heat generated during operation is primarily dissipated across the air gap of the stator, with residual heat evacuated through the spindle, bearing, and endplate assemblies, ensuring consistent thermal stability.

Additional features include an Insulation Class F rating for reliable operation in humid environments and a qualified shipping temperature range of -20 to +80 °C (operational) and 0 to +40 °C (transport). The rotor is housed in protective Styrofoam half-shells to guard against mechanical damage during transit. Precise alignment in the stator bore and horizontal mounting are required to achieve vibration-free operation. These characteristics yield enhanced durability, efficient heat management, and compatibility with a broad spectrum of high-speed industrial applications, making the 1MR240B-A072 an ideal choice for modern drive systems.