MRS202B-2N-0085-NNNN Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911315557
The Bosch Rexroth Indramat MRS202B-2N-0085-NNNN is a rotor from the MRS Synchronous IndraDyn H Motors series and features an internal diameter of 85 mm and a total length of 237 mm. It has a protection rating of IP00, is built to insulation class F standards, and is designed for step interference fit mounting.
Internal Product Review
The MRS202B-2N-0085-NNNN is an IndraDyn H synchronous spindle rotor with a standard design variant. Step interference fit mounting supports secure spindle integration, and the IP00 protection rating aligns well with enclosed machine assemblies. Insulation class F and a 0-40°C ambient range make this rotor a dependable choice for controlled industrial spindle systems.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The MRS202B-2N-0085-NNNN is a rotor subassembly manufactured by Bosch Rexroth Indramat for the MRS Synchronous IndraDyn H Motors series. As the rotating core of a synchronous spindle motor, it works with the stator winding to generate torque and maintain precise shaft speed in CNC machining centers and other industrial automation equipment. The part is supplied without bearings or end shields, permitting direct integration into the selected motor housing and balancing for the intended operating speed.
The rotor has a frame size of 202, which establishes compatibility with matching stator laminations and the corresponding motor housing. Inside the stack, an 85 mm internal diameter accommodates the spindle shaft and any required coolant passages. The laminated iron core has an Lfe of 200 mm, concentrating magnetic flux over that axial length for stable torque production. The unit has a total length of 237 mm at dimension L1, allowing adequate space to be reserved inside the motor housing. Thermal endurance is classified under insulation class F, supporting winding temperatures up to 155 °C when the rotor is assembled with the corresponding stator.
The acceptable operating air temperature ranges from 0 to 40 °C, making the assembly suitable for typical machine-tool enclosures. The assembly has an IP00 protection rating, so the surrounding motor frame and bearing seals must provide protection against contact, debris, and moisture. Both the rotor bore and outer diameter are machined for a step interference fit, providing a tight mechanical bond to the shaft and preventing slippage during rapid acceleration. The component is supplied in the standard design without additional balancing rings, keyways, or sensor magnets, allowing those features to be selected for the intended spindle application.
