1MS376B-QA-A2 Bosch Rexroth Indramat
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MPN: R911258231
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The Bosch Rexroth Indramat 1MS376B-QA-A2 is a stator for 1MB frameless spindle motors in the 1MB High-Speed Asynchronous Motors series. It features a frame size of 376, a motor design that is open kit style, and has a liquid cooling method with an aluminum cooling jacket. The stator comes with a 1.5 meter connection cable conducted through the stator end and has an IP00 protection class.
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Product Description:
The 1MS376B-QA-A2 is a stator supplied for integration into 1MB High-Speed Asynchronous Motors, a series developed by Bosch Rexroth Indramat for spindle applications that require a compact torque source. As a frameless component, it is built directly into a machine tool housing rather than installed in a separate motor frame. This layout lets the surrounding machine structure carry the mechanical support that a standard motor housing would normally provide. In operation, the stator forms the stationary half of a high-speed spindle motor and generates the electromagnetic field required for rotary motion in industrial automation.
This stator is engineered for liquid cooling, so coolant channels remove generated heat and support continuous high-speed operation without thermal derating. Its mechanical envelope uses frame size 376, which matches large-format spindle assemblies. The open kit motor design omits an external frame, permitting close coupling to the host machine structure and lowering overall inertia. Because the winding area is exposed, the protection rating is IP00, so the installation must provide its own enclosure and keep chips, dust, and accidental contact away from energized parts. Heat passes through an aluminum cooling jacket bonded to the lamination stack for efficient transfer to the circulating coolant. The active depth follows length code B, and the electrical characteristics follow winding code QA to match the resistance and inductance values set at production.
A factory-installed 1.5 m connection cable exits through the stator end, giving enough reach to the drive without additional splicing. When paired with the matching rotor, the assembly can be arranged as a compact spindle package with coolant routed through the jacket and power led through the supplied cable loom. This layout reduces the need for extra external mounting space around the motor section. It also helps control temperature, preserves assembly height, and supports positional accuracy in the finished spindle.
Frequently Asked Questions about 1MS376B-QA-A2:
Q: What type and length of connection cable does the 1MS376B-QA-A2 stator feature?
A: This model uses a 1.5 meter connection cable conducted through the stator end.
Q: What cooling method is used for the 1MS376B-QA-A2 stator?
A: The 1MS376B-QA-A2 utilizes liquid cooling to effectively manage operating temperatures.
Q: What is the frame size of the Bosch Rexroth 1MS376B-QA-A2 stator?
A: This stator is built for a frame size of 376.
Q: What is the protection class of the 1MS376B-QA-A2 stator?
A: The protection rating is IP00, which means it does not provide protection against dust or water ingress.
Q: What kind of cooling jacket is included on the 1MS376B-QA-A2 stator?
A: The 1MS376B-QA-A2 stator features an aluminum cooling jacket for improved heat dissipation.
