FHT-I MINI Harmonic Drive Bearing with Zero Backlash High Rigidity and P4 Precision for Industrial Robots
The FHT Series is a Miniature hat-type standard Unit designed for applications that demand compact size, smooth operation, and easy integration.
It features a large-diameter hollow shaft, allowing for convenient cable routing, piping, or installation of additional components through the center of the unit. This design not only improves system flexibility but also simplifies assembly and maintenance in complex mechanical layouts.
The FHT unit’s robust yet lightweight structure ensures high rotational accuracy and stable performance, even under continuous or high-speed operation. Its compact profile makes it ideal for use in robotic joints, semiconductor production equipment, precision instruments, and automated systems where space efficiency and operational reliability are crucial.
By combining ease of operation, excellent concentricity, and a versatile hollow-shaft design, the FHT Series provides engineers with a dependable solution for next-generation precision motion systems.
- Easy installation and integration – The unit type design simplifies assembly and ensures stable performance, minimizing errors caused by misalignment.
- Full Dimensional & Runout Inspection Report Includes certificates of conformity, roundness data, and preload verification-trusted by Tier-1 robot manufacturers.
- OEM/ODM Supported Custom marking, packaging, or minor dimension tweaks available for qualified partners.
- Proven in Real Robot Applications Already deployed in 6-axis arms, surgical robots, and AGV steering modules across EU, Japan, and North America.
| Model | Speed ratio | Rated torque at 2000 rpm | Permissible peak torque during start-stop operation | Maximum permissible average load torque | Instantaneous maximum permissible torque | Permissible maximum input speed (grease lubrication) | Permissible average input speed (grease lubrication) | Backlash | Weight | Design life | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N·m | kgf·m | N·m | kgf·m | N·m | kgf·m | N·m | kgf·m | r/min | r/min | Arc Sec | Kg | Hour | ||
| 11 | 50 | 3.5 | 0.36 | 8.3 | 0.85 | 5.5 | 0.56 | 17 | 1.73 | 8500 | 3500 | ≤30 | FHT-I:0.27 | 10000 |
| 100 | 5 | 0.51 | 11 | 1.12 | 8.9 | 0.91 | 25 | 2.55 | 10000 | |||||
| 14 | 50 | 5.4 | 0.55 | 18 | 1.8 | 6.9 | 0.7 | 35 | 3.6 | 8500 | 3500 | ≤20 | FHT-I/II:0.4 | 10000 |
| FHT-III:0.7 | ||||||||||||||
| FHT-IV:0.66 | ||||||||||||||
| FHT-V:0.4 | ||||||||||||||
| FHT-C: 0.14 | ||||||||||||||
| 80 | 7.8 | 0.8 | 23 | 2.4 | 11 | 1.1 | 47 | 4.8 | FHN-III: 0.55 | 15000 | ||||
| 100 | 7.8 | 0.8 | 28 | 2.9 | 11 | 1.1 | 54 | 5.5 | FHN-IV: 0.5 | 15000 | ||||
| 17 | 50 | 16 | 1.6 | 34 | 3.5 | 26 | 2.6 | 70 | 7.1 | 7300 | 3500 | ≤20 | FHT-I/II: 0.54 | 10000 |
| FHT-III: 0.99 | ||||||||||||||
| FHT-IV:0.9 | ||||||||||||||
| FHT-V:0.62 | ||||||||||||||
| 80 | 22 | 2.2 | 43 | 4.4 | 27 | 2.7 | 87 | 8.9 | FHT-C: 0.19 | 15000 | ||||
| 100 | 24 | 2.4 | 54 | 5.5 | 39 | 4 | 110 | 11 | FHN-III:0.79 | 15000 | ||||
| 120 | 24 | 2.4 | 54 | 5.5 | 39 | 4 | 86 | 8.8 | FHN-IV:0.69 | 15000 | ||||
| 20 | 50 | 25 | 2.5 | 56 | 5.7 | 34 | 3.5 | 98 | 10 | 6500 | 3500 | ≤20 | FHT-I/II:0.72 | 10000 |
| FHT-III:1.32 | ||||||||||||||
| FHT-IV:1.29 | ||||||||||||||
| 80 | 34 | 3.5 | 74 | 7.5 | 47 | 4.8 | 127 | 13 | FHT-V:0.82 | 15000 | ||||
| 100 | 40 | 4.1 | 82 | 8.4 | 49 | 5 | 147 | 15 | FHT-C:0.27 | 15000 | ||||
| 120 | 40 | 4.1 | 87 | 8.9 | 49 | 5 | 147 | 15 | FHN-III:1.04 | 15000 | ||||
| 160 | 40 | 4.1 | 92 | 9.4 | 49 | 5 | 147 | 15 | FHN-IV:0.98 | 15000 | ||||
| 25 | 50 | 39 | 4 | 98 | 10 | 55 | 5.6 | 186 | 19 | 5600 | 3500 | ≤20 | FHT-I/II:1.22 | 10000 |
| FHT-III:2.02 | ||||||||||||||
| FHT-IV:1.99 | ||||||||||||||
| 80 | 63 | 6.4 | 137 | 14 | 87 | 8.9 | 255 | 26 | FHT-V:1.4 | 15000 | ||||
| 100 | 67 | 6.8 | 157 | 16 | 108 | 11 | 284 | 29 | FHT-C:0.46 | 15000 | ||||
| 120 | 67 | 6.8 | 167 | 17 | 108 | 11 | 304 | 31 | FHN-III: 1.6 | 15000 | ||||
| 160 | 67 | 6.8 | 176 | 18 | 108 | 11 | 314 | 32 | FHN-IV: 1.43 | 15000 | ||||
| 32 | 50 | 76 | 7.8 | 216 | 22 | 108 | 11 | 382 | 39 | 4800 | 3500 | ≤20 | FHT-I/II:2.54 | 10000 |
| FHT-III:4.2 | ||||||||||||||
| FHT-IV:4 | ||||||||||||||
| 80 | 118 | 12 | 304 | 31 | 167 | 17 | 568 | 58 | FHT-V:2.7 | 15000 | ||||
| 100 | 137 | 14 | 333 | 34 | 216 | 22 | 647 | 66 | FHT-C:1 | 15000 | ||||
| 120 | 137 | 14 | 353 | 36 | 216 | 22 | 686 | 70 | FHN-III: 3.19 | 15000 | ||||
| 160 | 137 | 14 | 372 | 38 | 216 | 22 | 686 | 70 | FHN-IV: 3.17 | 15000 | ||||
| 40 | 50 | 137 | 14 | 402 | 41 | 196 | 20 | 686 | 70 | 4000 | 3000 | ≤20 | FHT-I/II: 4.4 | 10000 |
| FHT-III:7.2 | ||||||||||||||
| 80 | 206 | 21 | 519 | 53 | 284 | 29 | 980 | 100 | FHT-IV:7 | 15000 | ||||
| 100 | 265 | 27 | 568 | 58 | 372 | 38 | 1080 | 110 | FHT-V:4.06 | 15000 | ||||
| 120 | 294 | 30 | 617 | 63 | 451 | 46 | 1180 | 120 | FHT-C:1.87 | 15000 | ||||
| 160 | 294 | 30 | 647 | 66 | 451 | 46 | 1180 | 120 | FHN-III:5.95 | 15000 | ||||
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