Strain wave servo-gearbox FHG-II-32

coaxialkeyed bore20 - 50 Nm

Introduction
The FHG-II series strain wave drive features a cross-roller bearing coupling structure for its wave generator, allowing automatic fine-tuning of coaxiality. The cam-shaft bore can be adapted to the customer's motor model: the input shaft fits into the inner bore of the wave generator and connects via a flat key. A built-in high-rigidity cross-roller bearing serves as the main bearing. Typical connection options are rigid wheel fixed / flexspline output or flexspline fixed / rigid wheel output.

Features

• Wave generator with cross-roller bearing coupling for easier installation and automatic coaxial adjustment.
• Excellent rotational and positioning accuracy (backlash ≤20 arc sec depending on model/version).
• High torque capacity and high rigidity.
• Coaxial input and output; cam-shaft bore size adjustable to customer's motor.

Starting torque of FHG series (Sheet 1)
Unit: cNm. Type / Reduction ratio: 11 | 14 | 17 | 20 | 25 | 32 | 40. Examples by size: 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 (Sheet 2)
Model | Design value (Mbdi) | Instant permissible value (Mb max) | Ft di | Ft max | Fa di | Fa max. 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.

Notes from performance specification (summary)
The family includes multiple models (FHG-14, -17, -20, -25, -32, -40) and various reduction ratios. Detailed tables provide rated torque at 2000 r/min input, permissible peak torque at start/stop, permissible maximum average load torque, permissible maximum input speed (with grease), backlash (arc sec), weight (kg) and design life (hours). Refer to model tables for exact values per ratio and series variant.

Technical specifications / characteristics

• Series: FHG (FHG-II referenced).
• Wave generator coupling: cross-roller bearing coupling for automatic coaxial adjustment.
• Built-in high-rigidity cross-roller main bearing.
• Cam bore adaptable to customer motor; input shaft connects by flat key.
• Typical connection: rigid wheel fixed / flexspline output or flexspline fixed / rigid wheel output.
• High rigidity, high torque capacity, excellent rotational and positioning accuracy.
• Coaxial input/output; typical backlash ≤20 arc sec depending on model/version.
• Starting torque and moment load tables provided per model; see tables for Mbdi, Mb max, Ft, Fa and speed/weight/life data.