1MS270C-4B-A2

The Bosch Rexroth Indramat 1MS270C-4B-A2 stator is part of the 1MB High-Speed Asynchronous Motors series, designed for integration into high-performance spindle drives. Key features include a Motor Size: 270 and a Motor Length: C, complemented by a Windings Code: 4B. This frameless stator assembly serves as the stationary component of the main spindle motor, providing the electromagnetic field required to induce rotor motion and deliver precise rotary power in industrial machining and tooling applications.

Featuring a 255 V electrical connection via a robust terminal box, the 1MS270C-4B-A2 stator employs an aluminum cooling jacket circulating coolant at 5.2 l/min to maintain optimal operating temperatures. It is engineered with two pole pairs to generate a continuous torque of 190 Nm on the rotor while drawing a rated current of 96 A. The stator supports continuous operation at 1,500 rpm, transmitting 30 kW of power to the rotor end. Its windings exhibit a resistance of 0.099 Ω, and the torque constant is specified at 2.12 Nm/A, ensuring efficient conversion of electrical energy into mechanical torque.

Built to IP00 protection standards, this stator includes two NTC temperature sensors to monitor winding temperature and safeguard against thermal overload. With a mass of 82 kg (excluding accessories) and an operating temperature range of 0 °C to +40 °C without derating, it meets the insulation class-F criteria defined by DIN VDE 0530-1. A 1.5 m power cable with a slim exterior diameter facilitates straightforward installation and global deployment. Rugged construction and precise thermal management make the 1MS270C-4B-A2 stator a durable, efficient choice for demanding industrial environments, ensuring reliable performance and extended service life in modern spindle drive systems.