Description


Cifu Technology specializes in manufacturing frameless torque motors in various specifications. The current offering includes the U68 series—a frameless direct-drive motor with an outer diameter of 68mm—characterized by a compact structure, high positioning accuracy, and low torque ripple. Detailed specifications can be found in the accompanying table, and custom, non-standard configurations are available upon request.
Naming Convention
e.g.:
CF-TM16025
Meaning:
* CF = Cifu
* TM = Torque Motor
* 160 = Outer diameter 160 mm
* 25 = Overall height 25 mm
📌 Please read here for more details on product specifications.


| Model | U6818/U6822/U6836/ |
|---|---|
| Driver Input Voltage (VDC) | 48/48/48 |
| Rated Output Power (W) | 204/270/487 |
| Rated Torque (N·m) | 0.65/0.86/1.55 |
| Rated Current (A) | 6.3/8/12 |
| Rated Speed (rpm) | 3000/3000/3000 |
| No-load Speed (rpm) | 4500/4500/4500 |
| Peak Torque (N·m) | 1.95/2.5/4.65 |
| Peak Current (A) | 18.9/24/36 |
| Line Resistance (ohms @ 20°C) | 0.46/0.28/0.14 |
| Line Inductance (mH) | 0.57/0.37/0.17 |
| Torque Constant (N·m/A) | 0.103/0.1075/0.129 |
| Back-EMF Constant (Vrms/krpm) | 7.5/7.3/7.7 |
| Pole Pairs (2P) | 10/10/10 |
| Rotor Inertia (kg·cm²) | 0.262/0.37/0.68 |
| Weight (kg) | 0.188/0.253/0.427 |
| Dimensions (mm) | L1 (Stator Core Height): 10/14.5/27.5 |