ETEL TMB0140-030-3RAS-S82-EL Direct Drive Motor – High Torque Rotary Motion

The ETEL TMB0140-030-3RAS-S82-EL is a high-performance direct drive rotary motor engineered for applications that demand exceptional torque density, precise motion control, and long-term reliability. This motor features a frameless design, allowing it to be integrated directly into machine structures, eliminating the need for mechanical transmissions such as gearboxes, belts, or couplings. The direct drive architecture ensures zero backlash, high stiffness, and immediate response to command signals.

This model belongs to ETEL's TMB series, which is known for its high torque output and compact dimensions. The TMB0140-030-3RAS-S82-EL is specifically designed for use in demanding industrial environments, including machine tools, robotics, and rotary indexing systems. Its robust construction and advanced magnetic design provide smooth, cogging-free rotation across the entire speed range.

Key Features

• High Torque Density: Provides substantial torque in a compact form factor, enabling space-efficient machine designs.

• Direct Drive Operation: Zero backlash, high stiffness, and exceptional dynamic performance.

• Low Cogging Torque: Optimized magnet design minimizes torque ripple for smooth rotation at low speeds.

• Integrated Thermal Protection: Built-in temperature sensors prevent overheating during continuous operation.

• High-Resolution Feedback: Compatible with absolute and incremental encoders for precise position control.

• Durable Construction: Sealed design protects against dust, coolant, and other contaminants.

Technical Specifications

The TMB0140-030-3RAS-S82-EL operates with a three-phase winding configuration and is rated for a continuous torque of 30 Nm, with peak torque capabilities exceeding 90 Nm. The motor has a diameter of 140 mm and is designed for use with ETEL's compatible drive and feedback systems. The maximum speed is dependent on the drive and application requirements, but the motor is capable of speeds up to several hundred RPM with exceptional smoothness.

Electrical parameters include low inductance and resistance, enabling high bandwidth current control and rapid torque response. The motor includes integrated thermal sensors for overtemperature protection and is compatible with a wide range of encoder types, including EnDat, BiSS, and incremental encoders.

Applications

• Machine Tools: Direct drive rotary tables, spindle drives, and tool changers.

• Robotics: Wrist and joint actuators for industrial and collaborative robots.

• Rotary Indexing: High-speed indexing tables for assembly and packaging.

• Test and Measurement: Dynomometers and precision rotation stages.

Installation and Integration

Integrating the TMB0140-030-3RAS-S82-EL into a machine is facilitated by its frameless design, which allows the motor's stator and rotor to be directly mounted into the machine structure. This approach maximizes thermal transfer and mechanical stiffness, enhancing overall system performance. ETEL provides detailed mechanical drawings and assembly guidelines to ensure proper installation and alignment.

The motor's electrical connections are made via robust industrial connectors, and the feedback system is configured using ETEL's software tools. The auto-tuning function simplifies the commissioning process, automatically optimizing current and velocity loop parameters based on the connected drive and load conditions.

Benefits

• Superior Accuracy: Zero backlash and high resolution enable precise positioning and repeatability.

• High Throughput: High torque and acceleration capabilities reduce cycle times.

• Reliability: Robust construction and thermal management ensure long service life.

• Maintenance-Free: No brushes or gearboxes to wear out, reducing maintenance costs.

Conclusion

The ETEL TMB0140-030-3RAS-S82-EL direct drive motor is a high-performance rotary motion solution that delivers exceptional torque, precision, and reliability. Its direct drive architecture, robust construction, and flexible integration options make it an ideal choice for demanding industrial applications requiring high accuracy and durability.