Strain wave gear reducer FHG series

coaxialkeyed bore100 - 200 Nm

Introduction
The FHG-I series strain wave gear box integrates a cam-type wave generator. The cam shaft bore can be adapted to the customer's motor model; the input shaft fits into the wave generator inner bore and connects by a flat key. A built-in high-rigidity cross roller bearing serves as the main bearing. Typical connection methods are rigid wheel end fixed with flexspline output, or flexspline fixed with rigid wheel end output.

Features

• Integrated cam wave generator enabling simplified installation and multiple mounting options.
• Input shaft designed to fit directly into the wave generator bore and connect via flat key.
• Built-in high-rigidity cross roller main bearing.
• High positioning and rotational accuracy.
• High torque capacity and stiffness.
• Coaxial input and output configuration.

Starting torque — FHG series (unit: cNm)
Type / Reduction ratios: 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 limits (FHT/FHG series)

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

Performance highlights (selected values)
Selected extracted rows from performance table (columns: Model | Reduction ratio | Rated torque at 2000 r/min input (Nm) | Permissible peak torque at start/stop (Nm) | Permissible average load torque (Nm) | Permissible max input speed (Grease) r/min | Backlash (Arc Sec) | Weight (kg) | Design life (h) | FHG subtype coefficients)

• Model 14 (ratio 50/80/100/120): rated torque 7/10/10/10 Nm; peak 23/30/36/36 Nm; avg 9/14/14/14 Nm; permissible max input speed examples: 8500/—/—/— r/min; backlash ≤20; design life 10000–15000 h
• Model 17 (50/80/100/120): rated torque 21/29/31/31 Nm; peak 44/56/70/70 Nm; avg 34/35/51/51 Nm; permissible max input speed example: 7300 r/min; backlash ≤20; design life 10000–15000 h
• Model 20 (50/80/100/120/160): rated torque 33/44/52/52/52 Nm; peak 73/96/107/113/120 Nm; avg 44/61/64/64/64 Nm; permissible max input speed example: 6500 r/min; backlash ≤20; design life 10000–15000 h
• Model 25,32,40: see performance table for full numeric rows (examples: FHG-25 ratio 50 rated torque 51 Nm, peak 127 Nm; FHG-32 ratio 50 rated torque 99 Nm, peak 281 Nm; FHG-40 ratio 50 rated torque 178 Nm, peak 523 Nm).

Applications & selection notes

• Suitable for precision rotary drive applications requiring coaxial input/output and compact high-rigidity transmission (robotics, rotary tables, indexing mechanisms, machine tools, medical devices, etc.).
• Select model and reduction ratio based on rated torque, peak torque at start/stop, permissible radial/axial loads (Ft, Fa), allowable input speed and backlash requirements; consult the full manufacturer tables for exact values per variant (FHG-I to FHG-V).

Technical specifications

• Series: FHG (e.g., FHG-I)
• Structure: cam-integrated wave generator
• Input: shaft fits into wave generator bore, flat key connection
• Output: options – rigid wheel fixed / flexspline output or flexspline fixed / rigid wheel output
• Main bearing: built-in cross roller bearing (high rigidity)
• Available models: FHG-14, FHG-17, FHG-20, FHG-25, FHG-32, FHG-40
• Parameters provided: reduction ratios, rated and peak torques, radial/axial permissible loads, max input speeds, backlash (arc sec), weight, design life.