Harmonic gear reducer FHG-IV-17

coaxial20 - 50 Nm200 - 500 Nm

Introduction
The FHG-IV series harmonic drive features an input shaft configuration. It adopts an integrated sealed flange structure that combines harmonic drive components into a single unit, internally filled with specialized lubricating grease for simplified equipment integration. A high-rigidity cross roller bearing (main bearing) is integrated within the assembly. It is typically configured with either fixed circular spline and flexspline output or fixed flexspline and circular spline output.

Features

• Versatile input shaft design with multiple connection options
• Fully sealed unit pre-filled with specialized lubricant
• Timing pulley or gear shaft input connections
• High-precision rotation and accurate positioning
• High torque capacity
• Enhanced structural rigidity
• Inline input/output alignment

Specification — Starting torque of FHG series (unit: cNm)
Type / Reduction ratio | 11 | 14 | 17 | 20 | 25 | 32 | 40
50 | - | 8.8 | 27 | 36 | 56 | 85 | 136
80 | - | 7.5 | 25 | 33 | 50 | 74 | 117
100 | - | 6.9 | 24 | 32 | 49 | 72 | 112
120 | - | 6.9 | 24 | 31 | 48 | 68 | 110
160 | - | - | - | - | 31 | 47 | 67 | 105

Moment load table of FHT (FHG) series
Model: FHG-14 | Mbdi: 41 Nm | Mb max: 80 Nm | Ftdi: 270 N | Ft max: 490 N | Fadi: 270 N | Fa max: 490 N
Model: FHG-17 | Mbdi: 72 Nm | Mb max: 140 Nm | Ftdi: 400 N | Ft max: 700 N | Fadi: 400 N | Fa max: 700 N
Model: FHG-20 | Mbdi: 140 Nm | Mb max: 280 Nm | Ftdi: 650 N | Ft max: 1150 N | Fadi: 650 N | Fa max: 1150 N
Model: FHG-25 | Mbdi: 243 Nm | Mb max: 480 Nm | Ftdi: 900 N | Ft max: 1600 N | Fadi: 900 N | Fa max: 1600 N
Model: FHG-32 | Mbdi: 460 Nm | Mb max: 900 Nm | Ftdi: 1350 N | Ft max: 2300 N | Fadi: 1350 N | Fa max: 2300 N
Model: FHG-40 | Mbdi: 600 Nm | Mb max: 1200 Nm | Ftdi: 2000 N | Ft max: 3500 N | Fadi: 2000 N | Fa max: 3500 N

Performance tables (selected rows consolidated)
Sheet3 — column headers (condensed): Model | Reduction ratio | Rated torque at 2000 r/min input (Nm / kgfm) | Permissible peak torque at start/stop (Nm / kgfm) | Permissible maximum value for average load torque (Nm / kgfm) | Permissible maximum input speed (Grease) r/min | Backlash Arc Sec | Weight kg | Design life Hour

Model 14 — Reduction ratio 50: Rated torque 7 Nm / 0.7 kgfm | Permissible peak 23 Nm / 2.3 kgfm | Permissible avg torque 9 Nm / 0.9 kgfm | Max input speed 8500 r/min | Backlash ≤20 Arc Sec | Weight (FHG-I/II:0.40; FHG-III:0.7; FHG-IV:0.66; FHG-V:0.40) | Design life 10000 Hour
Model 14 — Reduction ratio 80: Rated torque 10 Nm / 1.0 kgfm | Permissible peak 30 Nm / 3.1 kgfm | Permissible avg torque 14 Nm / 1.4 kgfm | Max input speed 15000 r/min
Model 14 — Reduction ratio 100: Rated torque 10 Nm / 1.0 kgfm | Permissible peak 36 Nm / 3.7 kgfm | Permissible avg torque 14 Nm / 1.4 kgfm | Max input speed 15000 r/min
Model 14 — Reduction ratio 120: Rated torque 10 Nm / 1.0 kgfm | Permissible peak 36 Nm / 3.7 kgfm | Permissible avg torque 14 Nm / 1.4 kgfm | Max input speed 15000 r/min

Model 17 — Reduction ratio 50: Rated torque 21 Nm / 2.1 kgfm | Permissible peak 44 Nm / 4.5 kgfm | Permissible avg torque 34 Nm / 3.4 kgfm | Max input speed 7300 r/min | Backlash ≤20 Arc Sec | Design life 10000 Hour
Model 17 — Reduction ratio 80: Rated torque 29 Nm / 2.9 kgfm | Permissible peak 56 Nm / 5.7 kgfm | Permissible avg torque 35 Nm / 3.6 kgfm | Max input speed 15000 r/min
Model 17 — Reduction ratio 100: Rated torque 31 Nm / 3.2 kgfm | Permissible peak 70 Nm / 7.2 kgfm | Permissible avg torque 51 Nm / 5.2 kgfm | Max input speed 15000 r/min
Model 17 — Reduction ratio 120: Rated torque 31 Nm / 3.2 kgfm | Permissible peak 70 Nm / 7.2 kgfm | Permissible avg torque 51 Nm / 5.2 kgfm | Max input speed 15000 r/min

Model 20 — Reduction ratio 50: Rated torque 33 Nm / 3.3 kgfm | Permissible peak 73 Nm / 7.4 kgfm | Permissible avg torque 44 Nm / 4.5 kgfm | Max input speed 6500 r/min | Backlash ≤20 Arc Sec | Design life 10000 Hour
Model 20 — Reduction ratio 80: Rated torque 44 Nm / 4.5 kgfm | Permissible peak 96 Nm / 9.8 kgfm | Permissible avg torque 61 Nm / 6.2 kgfm | Max input speed 15000 r/min
Model 20 — Reduction ratio 100: Rated torque 52 Nm / 5.3 kgfm | Permissible peak 107 Nm / 10.9 kgfm | Permissible avg torque 64 Nm / 6.5 kgfm | Max input speed 15000 r/min
Model 20 — Reduction ratio 120: Rated torque 52 Nm / 5.3 kgfm | Permissible peak 113 Nm / 11.5 kgfm | Permissible avg torque 64 Nm / 6.5 kgfm | Max input speed 15000 r/min

Model 25 — Reduction ratio 50: Rated torque 51 Nm / 5.2 kgfm | Permissible peak 127 Nm / 13 kgfm | Permissible avg torque 72 Nm / 7.3 kgfm | Max input speed 5600 r/min | Backlash ≤20 Arc Sec | Design life 10000 Hour
Model 25 — Reduction ratio 80: Rated torque 82 Nm / 8.4 kgfm | Permissible peak 178 Nm / 18 kgfm | Permissible avg torque 113 Nm / 12 kgfm | Max input speed 15000 r/min
Model 25 — Reduction ratio 100: Rated torque 87 Nm / 8.9 kgfm | Permissible peak 204 Nm / 21 kgfm | Permissible avg torque 140 Nm / 14 kgfm | Max input speed 15000 r/min
Model 25 — Reduction ratio 120: Rated torque 87 Nm / 8.9 kgfm | Permissible peak 217 Nm / 22 kgfm | Permissible avg torque 140 Nm / 14 kgfm | Max input speed 15000 r/min

Model 32 — Reduction ratio 50: Rated torque 99 Nm / 10 kgfm | Permissible peak 281 Nm / 29 kgfm | Permissible avg torque 140 Nm / 14 kgfm | Max input speed 4800 r/min | Backlash ≤20 Arc Sec | Design life 10000 Hour
Model 32 — Reduction ratio 80: Rated torque 153 Nm / 16 kgfm | Permissible peak 395 Nm / 40 kgfm | Permissible avg torque 217 Nm / 22 kgfm | Max input speed 15000 r/min
Model 32 — Reduction ratio 100: Rated torque 178 Nm / 18 kgfm | Permissible peak 433 Nm / 44 kgfm | Permissible avg torque 281 Nm / 29 kgfm | Max input speed 15000 r/min
Model 32 — Reduction ratio 120: Rated torque 178 Nm / 18 kgfm | Permissible peak 459 Nm / 47 kgfm | Permissible avg torque 281 Nm / 29 kgfm | Max input speed 15000 r/min

Model 40 — Reduction ratio 50: Rated torque 178 Nm / 18 kgfm | Permissible peak 523 Nm / 53 kgfm | Permissible avg torque 255 Nm / 26 kgfm | Max input speed 4000 r/min | Backlash ≤20 Arc Sec | Design life 10000 Hour
Model 40 — Reduction ratio 80: Rated torque 268 Nm / 27 kgfm | Permissible peak 675 Nm / 69 kgfm | Permissible avg torque 369 Nm / 38 kgfm | Max input speed 15000 r/min
Model 40 — Reduction ratio 100: Rated torque 345 Nm / 35 kgfm | Permissible peak 738 Nm / 75 kgfm | Permissible avg torque 484 Nm / 49 kgfm | Max input speed 15000 r/min
Model 40 — Reduction ratio 120: Rated torque 382 Nm / 39 kgfm | Permissible peak 802 Nm / 82 kgfm | Permissible avg torque 586 Nm / 60 kgfm | Max input speed 15000 r/min

Caractéristiques / spécifications techniques

• Series: FHG-IV series harmonic drive (input shaft configuration)
• Structure: Integrated sealed flange structure, unit pre-filled with specialized lubricating grease
• Integrated bearings: High-rigidity cross roller main bearing
• Input connections: Timing pulley or gear shaft input; multiple shaft connection options
• Output configurations: Fixed circular spline with flexspline output, or fixed flexspline with circular spline output
• Performance range: Models FHG-14, FHG-17, FHG-20, FHG-25, FHG-32, FHG-40 (starting torque, rated torques, peak and permissible loads vary by model and reduction ratio — see tables above)
• Permissible input speeds: up to 15000 r/min for many configurations (grease-lubricated), with some larger models limited to lower maximum speeds (e.g., 4000–8500 r/min depending on model)
• Backlash: ≤20 arc sec (typical across listed configurations)
• Design life (example values shown in tables): typically 10000 hours (varies by model and configuration)