MRT290E-3N-0202-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRT290E-3N-0202-NNNN is part of the MRT Synchronous IndraDyn T Motors series. It features a 202 mm inside rotor diameter and has an IP00 protection class. The motor supports a maximum axial vibration of 10 m/s², a maximum radial vibration of 30 m/s², and a nominal altitude limit of 1000 meters above sea level.
Internal Product Review
The MRT290E-3N-0202-NNNN is a Bosch Rexroth Indramat synchronous IndraDyn T motor rotor well suited for precise direct-drive applications. Fixing by screws supports secure mechanical integration, and the IP00 protection class suits enclosed machine designs. Climate class 3K4 and a nominal altitude limit of 1000 m ASL make this unit a dependable choice for controlled industrial environments.
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Product Description:
The MRT290E-3N-0202-NNNN is a built-in torque motor component produced by Bosch Rexroth Indramat within the MRT Synchronous IndraDyn T Motors series. In direct-drive rotary axes, this motor section delivers continuous torque without belts or gearboxes, allowing tight process control in machining centers, indexing tables, and handling systems. Because the product ships as an active part rather than a complete housed motor, the machine builder must install it in a protected assembly and maintain the required mechanical alignment for proper operation. This design is suited to applications where backlash must be minimized and rotary motion must respond immediately to drive commands.
The unit carries an IP00 protection rating, so all electrical and mechanical parts remain open to the surrounding air and must be shielded by the machine enclosure. Its inside rotor diameter measures 202 mm, leaving a clear opening for feed-through cables, media lines, or hollow-shaft spindles. Mechanical retention is provided by fixing by screws, which gives the rotor a rigid axial clamp against the hub. This climate-class 3K4 device operates from +5 °C to +40 °C, and winding heat must be managed by the host machine’s cooling concept. Relative humidity may range from 5 percent to 95 percent without condensation, so the insulation system can tolerate normal moisture variation.
The unit withstands a maximum radial vibration load of 30 m/s² and an axial vibration load of 10 m/s², helping the rotor maintain magnetic concentricity during rapid speed changes. Shock resistance reaches 100 m/s², allowing the motor section to tolerate transport loads or abrupt stops without demagnetizing the permanent magnets. Continuous performance is maintained up to 1000 m ASL, and installations above that altitude require derating because thinner air reduces heat transfer. The permitted temperature-change rate is 0.5 °C per minute, and absolute moisture ranges from 1 g/m³ to 29 g/m³.
