1MS160B-4A-A2

The Bosch Rexroth Indramat 1MS160B-4A-A2 is a high-performance stator component in the 1MB High-Speed Asynchronous Motors series designed for use as a direct drive in motor spindles. With a Motor Size of 160 and a Motor Length code of B, as well as a Windings Code of 4A, this stator delivers the robust performance required for transfer lines, turning, mining, and grinding applications in machine tools, processing centers, and special-purpose machines. Its primary function is to provide efficient electromagnetic excitation and heat dissipation within the frameless spindle motor, ensuring smooth, precise rotary motion under demanding industrial conditions.

Constructed around a laminated core with end windings located at the front, the 1MS160B-4A-A2 stator integrates an aluminum cooling jacket to facilitate rapid and effective heat transfer from the stator windings to the coolant. The stator assembly comprises a sturdy stationary part that supports the rotor and maintains structural integrity at high speeds. The fluid-cooled jacket surrounds the stator laminations, channeling coolant uniformly around the windings to maintain optimal operating temperature and prevent thermal overload. All materials and design features are specified to ensure consistent performance at rated speeds for continuous duty cycles.

The stator’s electrical connection is provided by a 1.5 m long loom of cables housed within a protective hose and terminating in three power conductors. It is engineered to operate reliably in ambient temperatures up to 40°C and at elevations up to 1000 m above sea level. With a protection class of IP 00 in accordance with IEC 60529, the unit must be shielded from moisture and jets of liquid; optional seals can be fitted when damp environments are unavoidable. This motor stator can be shipped globally with a one-year warranty, and its precision cooling, robust construction, and compatibility with standard industrial controls make it an ideal choice for high-speed machining and automation systems that demand efficiency, reliability, and long-term durability.