MRS162J-2N-0060-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRS162J-2N-0060-NNNN is part of the MRS Synchronous IndraDyn H Motors series and is designed as a standard rotor with a frame size of 162 and frame length code J. It features an internal diameter of 60 mm, measures 361 mm in total length, and has a protection rating of IP00.
Internal Product Review
The MRS162J-2N-0060-NNNN is a synchronous spindle motor rotor with step interference fit mounting. Class F insulation and IP00 protection give the assembly dependable thermal capability in properly enclosed machine builds. The standard design supports straightforward fit-up and makes the part a strong choice for precision spindle service.
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Product Description:
The MRS162J-2N-0060-NNNN is a rotor produced by Bosch Rexroth Indramat within the MRS Synchronous IndraDyn H Motors series. As the rotating component of a synchronous spindle assembly, it works with a stator and position feedback to convert drive current into controlled speed and torque. This operation supports precise rotation in machine-tool spindles and other automated motion axes where stable acceleration, deceleration, and positioning are required.
The rotor can operate within an ambient temperature range of 0 to 40 °C, helping keep thermal expansion predictable during continuous duty. It is designed for a frame size of 162, which aligns with compatible stator housings and bearing arrangements. The hollow core has an internal diameter of 60 mm, leaving space for a spindle shaft, drawbar, or through-coolant tube. Mechanical coupling uses a stepped interference fit, which maintains concentricity and uniform contact pressure during rapid acceleration and braking. The finish-machined bore supports secure press-fit installation without requiring a separate mechanical coupling inside the spindle assembly. With IP00 protection, the rotor depends on the enclosing spindle housing for protection against contact, debris, moisture, and other contaminants encountered during machine operation.
The rotor uses the standard design, with the baseline magnet grade, balancing method, and coating for this model. A frame length of J establishes the magnetic stack length and provides a midrange inertia profile that balances acceleration performance with torsional rigidity. The insulation system meets Class F, allowing operation alongside stators whose windings reach elevated temperatures during demanding machining cycles. An overall axial length of 361 mm provides the magnet volume needed for torque generation while fitting the corresponding IndraDyn H spindle assembly. The rotor’s hollow construction also accommodates internal spindle components without obstructing the central passage. Its press-fit mounting arrangement keeps the rotor centered on the spindle shaft as rotational speed and mechanical loading change.
