Technical Description: Oriental Motor TM203C-18SE
The TM203C-18SE is a specialized AC Torque Motor from Oriental Motor’s TM Series. Unlike standard induction motors, torque motors are engineered to provide high torque at low speeds and are capable of operating in a stalled condition without overheating. This makes the TM203C-18SE the ideal solution for tensioning, winding/unwinding, and «pushing» applications in industrial web handling, textile manufacturing, and automated packaging lines.
Precision Torque Control and Winding Logic
The TM203C-18SE features a 200-230V AC winding designed to vary its torque output based on the input voltage. This allows operators to fine-tune the tension of delicate materials (like film, paper, or wire) as the reel diameter changes. The motor is equipped with a high-resistance rotor that creates a sloping speed-torque curve, ensuring stable operation across a wide speed range. The «18SE» designation indicates its specific power rating and electrical configuration, optimized for 3-watt to 10-watt class output depending on the duty cycle.
Key Characteristics
- Part Number: TM203C-18SE.
- Series: TM Series (Torque Control).
- Input Voltage: 200-230V AC (Single Phase).
- Frequency: 50/60 Hz.
- Duty Cycle: 5 minutes (Intermittent) or Continuous (with voltage reduction).
- Protection: Built-in thermal protector.
- Frame Size: 60 mm (2.36 in.).
- Output Power: Approx. 3W class.
Operational Modes and Efficiency
The TM203C-18SE supports three primary modes: Winding (keeping tension constant as diameter increases), Pushing (maintaining force against a stationary object), and Braking (creating reverse torque to keep tension). Because it generates significant heat during stalled operation, the motor features a robust aluminum housing designed for efficient heat dissipation. It is frequently paired with Oriental Motor’s TM-series torque controllers for automated voltage regulation.
| Category | Specification |
| Starting Torque | 0.18 N·m (at 200V) |
| Connection | Lead wire type |
| Standards | RoHS, CE, UL Recognized |
Maintenance Insights
The TM203C-18SE is essentially maintenance-free due to its lack of brushes. However, in applications requiring high-voltage stall for extended periods, external fan cooling is recommended to prevent the thermal protector from tripping. Ensure the capacitor provided with the motor is always used to maintain the correct phase shift.
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