1MS160E-4B-A1 Bosch Rexroth Indramat
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MPN: R911246976
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The Bosch Rexroth Indramat 1MS160E-4B-A1 is a stator for the 1MB Frameless Spindle Motor series, featuring a frame size of 160 and coded as length E. It uses liquid cooling with an aluminum cooling jacket and comes with a 1.5 meter connection cable conducted through the stator end.
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Product Description:
The 1MS160E-4B-A1 stator is produced by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. Serving as the stationary half of a frameless spindle assembly, it mates with a rotor to generate high-speed rotation for milling, grinding, and drilling spindles used in automated production equipment. Using a separate stator lets machine builders embed the drive directly into the spindle cartridge, conserving space and eliminating external motor mounts within industrial automation cells. This arrangement is suited to spindle systems that need a compact drive section while keeping the rotating assembly closely integrated with the machine structure.
Thermal management relies on liquid cooling, which channels coolant around the laminations so continuous power can be maintained without airflow through the machine enclosure. The stator housing incorporates an aluminum cooling jacket, and this material conducts heat efficiently while resisting corrosion from glycol-based coolants. Power and sensor conductors exit through the rear via a pre-terminated 1.5 m loom, which helps simplify cabinet wiring. The stator uses frame size 160, which sets the outer diameter and bolt circle common to this family. The winding variant is 4B, which supports the voltage and speed range expected from conventional 400 V spindle drives.
The motor length code is E, which provides the lamination stack height needed for the continuous torque of this frame. As a Stator for 1MB Frameless Spindle Motor, the unit is pressed directly into the spindle housing, reducing shaft length and improving dynamic stiffness. This frameless layout is intended for spindle assemblies that support the motor components directly within the machine structure. It also keeps the motor package compact around the rotating elements and surrounding hardware.
Frequently Asked Questions about 1MS160E-4B-A1:
Q: What cooling method is used in the 1MS160E-4B-A1 stator?
A: This stator uses a liquid cooling method, supporting efficient heat dissipation during operation.
Q: What type of cooling jacket does the 1MS160E-4B-A1 stator have?
A: The 1MS160E-4B-A1 features a robust aluminum cooling jacket built into the stator.
Q: What is the length and routing of the connection cable on the 1MS160E-4B-A1?
A: A 1.5 meter loom connection cable is included and is conducted through the stator end.
Q: What frame size does the 1MS160E-4B-A1 stator use?
A: This model has a frame size of 160, which may impact mounting requirements.
Q: What is the winding variant for the 1MS160E-4B-A1 stator?
A: The winding variant used in this model is labeled as 4B.
