ETEL TMB+0291‑150‑UD2ST‑ON‑AA0 Torque Motor Stator Assembly

The ETEL TMB+0291‑150‑UD2ST‑ON‑AA0 is a torque motor stator assembly designed for direct‑drive rotary applications requiring high torque and precision. This stator is part of ETEL's TMB series of frameless torque motors, which are widely used in robotics, rotary tables, and machining spindles. The assembly includes the laminated stator core with windings, integrated thermal sensor, and connection cables.

It features a high pole‑count design for smooth torque output at low speeds, and a compact outer diameter of 291 mm with a stack length of 150 mm, providing substantial torque density. The stator is designed to be mounted directly into the machine housing, with the rotor (sold separately) attached to the rotating shaft.

Key Features

• Outer diameter: 291 mm, stack length: 150 mm

• Rated torque: 150 Nm (typical, depending on cooling)

• Peak torque: 300 Nm

• Voltage: 400 VAC, three‑phase

• Integrated thermal protection (PTC thermistor)

• Pre‑wired leads with connector

• High‑performance magnetic circuit

Technical Specifications

Insulation class: F (155°C); torque constant: 2.5 Nm/A; maximum speed: 500 rpm; inductance: 15 mH; resistance: 0.5 Ω (phase); cooling: natural convection or water‑cooled option; operating temperature: 0°C to +40°C; weight: 12 kg.

Applications

Used in direct‑drive rotary tables, industrial robotics, winder drives, and aerospace test equipment. Ideal for applications requiring zero backlash and high stiffness.

Installation and Integration

Mount the stator into the machine housing with the provided screws, ensuring proper concentricity with the rotor. Connect the motor cables to a compatible servo drive. Install the thermal sensor to the drive's protection circuit.

Reliability and Maintenance

Frameless design eliminates mechanical couplings. The stator is epoxy‑sealed for protection against contaminants. Periodic inspection of connections and insulation resistance is recommended.

Why Choose the TMB+0291‑150?

This stator assembly offers high torque density and precision for demanding direct‑drive applications, with ETEL's proven motor technology ensuring long‑term reliability.

In summary, the ETEL TMB+0291‑150‑UD2ST‑ON‑AA0 provides a powerful and compact solution for high‑torque rotary motion.