Harmonic servo-gearbox FHG-14 series

coaxialhollow-shaft100 - 200 Nm

Introduction
The FHG-III series harmonic drive features a large hollow shaft structure and an integrated sealed flange design combining harmonic drive components into a single unit. Units are pre-filled with specialized lubricating grease to simplify equipment assembly. An internal high-rigidity cross roller main bearing is integrated. Typical configurations include fixed circular spline with flexspline output or fixed flexspline with circular spline output.

Features

• Large hollow shaft structure for cable and optical line routing
• Fully sealed integrated flange design, pre-filled with specialized lubricating grease
• Input connections via timing pulleys or gear shafts
• Excellent rotational and positioning accuracy (typical backlash ≤20 arc sec depending on version)
• High torque capacity and high rigidity
• Coaxial input and output

Specification - Sheet 1: 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

Specification - Sheet 2: Moment load table of FHT(FHG) series
Selected values per model:
FHG-14: Mb di 41 Nm, Mb max 80 Nm; Ft di 270 N, Ft max 490 N; Fa di 270 N, Fa max 490 N
FHG-17: Mb di 72 Nm, Mb max 140 Nm; Ft di 400 N, Ft max 700 N; Fa di 400 N, Fa max 700 N
FHG-20: Mb di 140 Nm, Mb max 280 Nm; Ft di 650 N, Ft max 1150 N; Fa di 650 N, Fa max 1150 N
FHG-25: Mb di 243 Nm, Mb max 480 Nm; Ft di 900 N, Ft max 1600 N; Fa di 900 N, Fa max 1600 N
FHG-32: Mb di 460 Nm, Mb max 900 Nm; Ft di 1350 N, Ft max 2300 N; Fa di 1350 N, Fa max 2300 N
FHG-40: Mb di 600 Nm, Mb max 1200 Nm; Ft di 2000 N, Ft max 3500 N; Fa di 2000 N, Fa max 3500 N

Specification - Sheet 3: Rated torque / permissible values / performance (selected rows)
Table headers: Model | Reduction ratio | Rated torque at 2000 r/min input (Nm | kgfm) | Permissible peak torque at start/stop (Nm | kgfm) | Permissible maximum average load torque (Nm | kgfm) | Permissible max input speed (grease) r/min | Backlash Arc Sec | Weight kg | Design life Hour

Representative entries (selected models):
Model 14 (reductions 50,80,100,120): Rated torque (Nm): 7,10,10,10; Rated torque columns (2000 r/min input): 23,30,36,36; Permissible max average torque Nm: 9,14,14,14; Permissible max input speed: up to 15000 r/min (depending on ratio); Backlash ≤20 arc sec; Design life factor (example) FHG-III:0.7
Model 17: Rated torque (Nm): 21,29,31,31; Rated torque columns: 44,56,70,70; Permissible max average torque: 34,35,51,51; Permissible max input speed up to 15000 r/min; Backlash ≤20 arc sec; Design life factor FHG-III:0.99
Model 20: Rated torque (Nm): 33,44,52,52,52; Rated torque columns: 73,96,107,113,120; Permissible max average torque: 44,61,64,64,64; Permissible max input speed up to 15000 r/min; Backlash ≤20 arc sec; Design life factor FHG-III:1.32
Model 25: Rated torque (Nm): 51,82,87,87; Rated torque columns: 127,178,204,217; Permissible max average torque: 72,113,140,140; Permissible max input speed up to 15000 r/min; Backlash ≤20 arc sec; Design life factor FHG-III:2.02
Model 32: Rated torque (Nm): 99,153,178,178; Rated torque columns: 281,395,433,459; Permissible max average torque: 140,738,841,892; Permissible max input speed up to 15000 r/min; Backlash ≤20 arc sec; Design life factor FHG-III:4.20
Model 40: Rated torque (Nm): 178,268,345,382; Rated torque columns: 523,675,738,802; Permissible max average torque: 255,1270,1400,1530; Permissible max input speed up to 15000 r/min; Backlash ≤20 arc sec; Design life factor FHG-III:7.20

Technical characteristics / specifications

• Series: FHG-III (large hollow shaft design)
• Integrated sealed flange design; unit pre-filled with specialized grease
• Integrated high-rigidity cross roller main bearing
• Output configurations: fixed circular spline with flexspline output OR fixed flexspline with circular spline output
• Input options: timing pulleys or gear shafts
• High rotational and positioning accuracy (typical backlash ≤20 arc sec)
• High torque capacity and high rigidity; coaxial input and output
• Starting torque values, moment load capacities and permissible torques detailed in the specification tables above