Output shaft FHG-IV-25

driveprecisionwith flange

Introduction
The FHG-IV series harmonic drive is supplied as an input-shaft configuration with an integrated sealed flange. The unit combines harmonic drive components into a single sealed assembly pre-filled with specialized lubricating grease for simplified equipment integration. A high-rigidity cross roller bearing is incorporated as the main bearing. Output can be supplied as fixed circular spline with flexspline output or fixed flexspline with circular spline output.

Features

• Input-shaft design with multiple connection options (timing pulley or gear shaft)
• Fully integrated sealed flange, pre-filled with specialized lubricant
• High-precision rotation and accurate positioning
• High torque capacity with enhanced structural rigidity
• Inline input/output alignment for compact installation
• Integrated high-rigidity cross roller main bearing

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
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 / Rated torque / Permissible values (extracts)
Tables provide rated torque at 2000 r/min, permissible peak torque at start/stop, permissible average load torque, permissible maximum input rotational speed (with grease), backlash (Arc Sec), weight and design life per model and reduction ratio.
Examples (selected entries):
Model FHG-14 (reduction 50): Rated 7 Nm | Peak 23 Nm | Permissible avg 9 Nm | Typical max input speed entries vary by ratio (table values up to 15000 r/min for some ratios) | Backlash ≤20 Arc Sec | Design life ≈10000 h
Model FHG-17 (reduction 50): Rated 21 Nm | Peak 44 Nm | Permissible avg 34 Nm | Typical design life ≈10000 h
Model FHG-20 (reduction 50): Rated 33 Nm | Peak 73 Nm | Permissible avg 44 Nm
Model FHG-25 (reduction 50): Rated 51 Nm | Peak 127 Nm | Permissible avg 72 Nm
Models FHG-32 / FHG-40: higher nominal torques and weights; permissible maximum input speeds and design life vary by ratio and model (consult tables for exact values).

Notes
The product is offered as an integrated sealed-flange harmonic drive (FHG-IV series) with multiple sizes (FHG-14, FHG-17, FHG-20, FHG-25, FHG-32, FHG-40). Detailed tables above list starting torque, moment load capacities, rated torques, permissible peaks and average loads, permissible maximum input rotational speeds (grease), backlash and design life. Refer to the tables for selecting the correct size and reduction ratio for your application.

Technical specifications

• Series / Model family: FHG-IV
• Product type: Sealed flange structure input-shaft harmonic drive
• Integrated sealed flange pre-filled with specialized lubricant
• Main bearing: high-rigidity cross roller bearing (integrated)
• Output configurations: fixed circular spline + flexspline OR fixed flexspline + circular spline
• Input connections: timing pulley or gear shaft (multiple options)
• Key parameters provided in tables: starting torque (cNm), moment loads (Mb, Ft, Fa), rated torque, permissible peak/start-stop torque, permissible average torque, permissible max input speed (grease), backlash, weight, design life