MRS242B-2N-0100-NNNN Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat MRS242B-2N-0100-NNNN is a standard rotor from the MRS Synchronous IndraDyn H Motors series with an internal diameter of 100 mm and a total length of 245 mm. It features a frame size of 242, insulation class F, a step interference fit mounting style, and an IP00 protection rating. The ambient temperature range for this rotor is 0 to 40°C.
Internal Product Review
The MRS242B-2N-0100-NNNN is an IndraDyn H synchronous spindle rotor with step interference fit mounting, making it a well-engineered choice for precise spindle assemblies. A standard design variant and Class F insulation support dependable integration and stable thermal performance. IP00 construction makes this rotor best suited for protected installations, a strong fit for controlled industrial environments.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The Bosch Rexroth Indramat MRS242B-2N-0100-NNNN is a rotor supplied for the MRS Synchronous IndraDyn H Motors series. As the rotating core of a synchronous spindle motor, it converts the stator’s electromagnetic field into mechanical motion for cutting tools, grinding wheels, and other high-speed heads in automated machining centers. The standalone rotor operates with a compatible stator and drive electronics as part of a complete spindle assembly. Its synchronous design supports controlled acceleration and steady rotation during demanding machining processes.
An internal bore of 100 mm provides a consistent press fit on hollow shafts or clamping sleeves, helping keep runout low during rapid acceleration. The outer envelope follows frame size 242, allowing installation in a matching IndraDyn H motor housing. Magnetic performance is supported by an iron stack measuring 200 mm in length, and this active lamination depth provides the magnetic flux needed for spindle torque. The rotor has an IP00 protection rating, so it must operate inside a motor casing that protects it from coolant, chips, and contact with moving components. Materials in the lamination assembly comply with insulation class F and tolerate temperatures up to 155 °C without losing mechanical strength. Proper enclosure and alignment are necessary because the rotor itself does not provide protection against dust or water.
The permitted ambient temperature range is 0–40 °C, which suits the operating conditions of many liquid-cooled machine tools. A precision step interference fit at the bore transmits drive torque without keys and helps reduce imbalance at elevated speeds. The rotor has a total length of 245 mm, providing the axial dimension needed to establish bearing spacing and drawbar travel within the spindle. Its frame length code B indicates a mid-length configuration that balances rotor inertia with acceleration capability. The bore fit, total length, and frame length must match the surrounding spindle components to maintain proper alignment during operation.
