Harmonic servo-gearbox FHG-IV-40

coaxialsolid-shaft200 - 500 Nm

Introduction
The FHG-IV series harmonic drive is an input-shaft type with an integrated sealed flange structure. The assembly is pre-filled with specialized lubricating grease and includes a high-rigidity cross roller main bearing to simplify equipment integration. Typical output configurations are fixed circular spline + flexspline or fixed flexspline + circular spline output.

Features

• Input-shaft design with multiple connection options (timing pulley or gear shaft)
• Fully sealed flange unit, internally pre-filled with specialized grease
• Integrated high-rigidity cross roller main bearing
• High-precision rotation and accurate positioning; low backlash (≤20 arc sec typical)
• High torque capacity across sizes FHG-14 to FHG-40
• Inline input/output alignment and enhanced structural rigidity

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

Specification - Moment load table of FHT (FHG) series

• FHG-14: Design Mb 41 Nm; Mb max 80 Nm; Ft design 270 N; Ft max 490 N; Fa design 270 N; Fa max 490 N
• FHG-17: Design Mb 72 Nm; Mb max 140 Nm; Ft design 400 N; Ft max 700 N; Fa design 400 N; Fa max 700 N
• FHG-20: Design Mb 140 Nm; Mb max 280 Nm; Ft design 650 N; Ft max 1150 N; Fa design 650 N; Fa max 1150 N
• FHG-25: Design Mb 243 Nm; Mb max 480 Nm; Ft design 900 N; Ft max 1600 N; Fa design 900 N; Fa max 1600 N
• FHG-32: Design Mb 460 Nm; Mb max 900 Nm; Ft design 1350 N; Ft max 2300 N; Fa design 1350 N; Fa max 2300 N
• FHG-40: Design Mb 600 Nm; Mb max 1200 Nm; Ft design 2000 N; Ft max 3500 N; Fa design 2000 N; Fa max 3500 N

Performance / Moment tables (key values)
Summary by model (examples): Model 14 (ratios 50–120) rated torque ~7–10 Nm, peak torque ~23–36 Nm, permissible max torque values and input speeds vary by ratio (max input speed up to 15000 r/min depending on model). Models 17–40 increase in rated and peak torque with size (e.g., Model 32 rated up to ~178 Nm, peak up to ~459 Nm; Model 40 rated up to ~382 Nm, peak up to ~802 Nm). Backlash typical ≤20 arc sec; design life indicated ~10000 h in datasheet.

Technical specifications

• Series: FHG (FHG-IV = input-shaft configuration)
• Integrated sealed flange structure; unit pre-filled with specialized grease
• High-rigidity cross roller main bearing integrated
• Typical output options: fixed circular spline + flexspline OR fixed flexspline + circular spline
• Input connections: timing pulley or gear shaft
• Designed for high-precision rotation, accurate positioning and high torque capacity
• Available models: FHG-14, FHG-17, FHG-20, FHG-25, FHG-32, FHG-40; consult datasheet for full torque, load, speed and weight tables