Strain wave servo-gearbox FHG-I-40

coaxialkeyed bore1000 - 5000 Nm

Introduction
The FHG-I series strain wave gear box features an integrated cam-type wave generator with an adjustable cam-shaft bore to match the customer's motor. The input shaft is designed to fit directly into the inner bore of the wave generator and is secured by a flat key. The unit incorporates a built-in high‑rigidity cross‑roller main bearing. Typical connection methods are: rigid wheel end fixed with flexspline output, or flexspline fixed with rigid wheel end output.

Features

• Integrated cam-type wave generator enabling simplified mounting and multiple installation options.
• Adjustable cam-shaft bore to accommodate various motor models.
• Input shaft fits into the wave generator inner bore and connects via flat key for direct drive coupling.
• Built-in high-rigidity cross-roller main bearing for improved stiffness.
• High torque capacity across available sizes.
• Excellent rotational and positioning accuracy; coaxial input and output.

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

Moment/load capacities (examples)
FHG-14: Mbdi 41 Nm; Mb max 80 Nm; Ft di 270 N; Ft max 490 N; Fa di 270 N; Fa max 490 N
FHG-17: Mbdi 72 Nm; Mb max 140 Nm; Ft di 400 N; Ft max 700 N; Fa di 400 N; Fa max 700 N
FHG-20: Mbdi 140 Nm; Mb max 280 Nm; Ft di 650 N; Ft max 1150 N; Fa di 650 N; Fa max 1150 N
FHG-25: Mbdi 243 Nm; Mb max 480 Nm; Ft di 900 N; Ft max 1600 N; Fa di 900 N; Fa max 1600 N
FHG-32: Mbdi 460 Nm; Mb max 900 Nm; Ft di 1350 N; Ft max 2300 N; Fa di 1350 N; Fa max 2300 N
FHG-40: Mbdi 600 Nm; Mb max 1200 Nm; Ft di 2000 N; Ft max 3500 N; Fa di 2000 N; Fa max 3500 N

Performance summary
The product documentation (technical sheets) provides detailed tables covering: reduction-ratio dependent starting torques for multiple size types (50, 80, 100, 120, 160), model-specific moment and load capacities, permissible peak torques at start/stop, permissible average-load torque values, rated torques at specified input speed, maximum permissible input speeds (vary by model/configuration), backlash (ArcSec), weights and design life per configuration. CAD and PDF drawings and downloadable product sheets are available in the Downloads section.

Specifications

• Series: FHG (FHG-I family and variants).
• Wave generator: integrated cam-type; cam-shaft bore adjustable to match motor models.
• Input shaft: direct fit into wave generator inner bore; connection via flat key.
• Main bearing: built-in high-rigidity cross-roller bearing.
• Connection methods: rigid wheel fixed / flexspline output or flexspline fixed / rigid wheel output.
• Available models: FHG-14, FHG-17, FHG-20, FHG-25, FHG-32, FHG-40.
• Available reduction ratios: 11, 14, 17, 20, 25, 32, 40 (availability depends on size).
• Detailed starting torque, moment/load, maximum speeds, backlash, weights and design life provided per model in product sheets.
• Documentation: multiple downloadable CAD/PDF drawings and technical datasheets included.