Harmonic gear reducer FHD-25

coaxial50 - 100 Nm10 - 20 Nm

Introduction
The FHD Series harmonic reducer employs an ultra-short top-hat flexspline design, designed for applications demanding extreme compactness and lightweight performance. The FHD Combined Type pursues the ultimate flat-profile design. Compared to the FHG series, its axial length is reduced by approximately 50%. Equipped with high-rigidity cross roller bearings on the output side, it is ideally suited for applications requiring space-constrained designs.

Features

• Ultra-thin profile with hollow structure
• Compact and streamlined design
• High torque capacity
• High rigidity, zero backlash
• Coaxial input/output

Starting torque of FHD series (unit: cNm)
Type / Reduction ratio: 14 | 17 | 20 | 25 | 32
50: 6.2 | 19 | 25 | 39 | 60
80: 5 | 16 | 23 | 36 | 55
100: 4.8 | 17 | 22 | 34 | 50

Mechanical limits (Sheet 2)

• FHD-14: Mb di 41 Nm; Mb max 80 Nm; Ft di 270 N; Ft max 490 N; Fa di 270 N; Fa max 490 N
• FHD-17: Mb di 59 Nm; Mb max 140 Nm; Ft di 330 N; Ft max 570 N; Fa di 330 N; Fa max 570 N
• FHD-20: Mb di 117 Nm; Mb max 230 Nm; Ft di 550 N; Ft max 975 N; Fa di 550 N; Fa max 975 N
• FHD-25: Mb di 213 Nm; Mb max 420 Nm; Ft di 790 N; Ft max 1400 N; Fa di 790 N; Fa max 1400 N
• FHD-32: Mb di 400 Nm; Mb max 800 Nm; Ft di 1240 N; Ft max 2100 N; Fa di 1240 N; Fa max 2100 N

Performance Data (Sheet 3)
All values units indicated per column headings.

• Model FHD-14 (shared values: Permissible max input speed (Grease) 8500 r/min; Permissible average input speed 3500 r/min; Backlash ≤20 Arc Sec; Weight: FHD-I 0.34 kg, FHD-II 0.64 kg):
    Reduction 50: Rated torque 3.7 Nm; Permissible peak torque (start/stop) 12 Nm; Permissible max average load torque 4.8 Nm; Permissible max momentary torque 23 Nm; Design life 9000 h
    Reduction 80: Rated torque 5.1 Nm; Permissible peak 15 Nm; Permissible avg 6.2 Nm; Permissible momentary 29 Nm; Design life 10000 h
    Reduction 100: Rated torque 5.4 Nm; Permissible peak 19 Nm; Permissible avg 7.7 Nm; Permissible momentary 35 Nm; Design life 10000 h
• Model FHD-17 (shared values: Permissible max input speed 7300 r/min; Permissible average input speed 3500 r/min; Backlash ≤20 Arc Sec; Weight: FHD-I 0.42 kg, FHD-II 0.87 kg):
    Reduction 50: Rated torque 11 Nm; Permissible peak 23 Nm; Permissible avg 18 Nm; Permissible momentary 48 Nm; Design life 9000 h
    Reduction 80: Rated torque 14 Nm; Permissible peak 29 Nm; Permissible avg 21 Nm; Permissible momentary 54 Nm; Design life 10000 h
    Reduction 100: Rated torque 16 Nm; Permissible peak 37 Nm; Permissible avg 27 Nm; Permissible momentary 71 Nm; Design life 10000 h
• Model FHD-20 (shared values: Permissible max input speed 6500 r/min; Permissible average input speed 3500 r/min; Backlash ≤20 Arc Sec; Weight: FHD-I 0.54 kg, FHD-II 1.14 kg):
    Reduction 50: Rated torque 17 Nm; Permissible peak 39 Nm; Permissible avg 24 Nm; Permissible momentary 69 Nm; Design life 9000 h
    Reduction 80: Rated torque 23 Nm; Permissible peak 49 Nm; Permissible avg 28 Nm; Permissible momentary 78 Nm; Design life 10000 h
    Reduction 100: Rated torque 28 Nm; Permissible peak 57 Nm; Permissible avg 34 Nm; Permissible momentary 95 Nm; Design life 10000 h
• Model FHD-25 (shared values: Permissible max input speed 5600 r/min; Permissible average input speed 3500 r/min; Backlash ≤20 Arc Sec; Weight: FHD-I 0.95 kg, FHD-II 1.75 kg):
    Reduction 50: Rated torque 27 Nm; Permissible peak 69 Nm; Permissible avg 38 Nm; Permissible momentary 127 Nm; Design life 9000 h
    Reduction 80: Rated torque 42 Nm; Permissible peak 91 Nm; Permissible avg 62 Nm; Permissible momentary 157 Nm; Design life 10000 h
    Reduction 100: Rated torque 47 Nm; Permissible peak 110 Nm; Permissible avg 75 Nm; Permissible momentary 184 Nm; Design life 10000 h
• Model FHD-32 (shared values: Permissible max input speed 4800 r/min; Permissible average input speed 3500 r/min; Backlash ≤20 Arc Sec; Weight: FHD-I 1.90 kg, FHD-II 3.56 kg):
    Reduction 50: Rated torque 53 Nm; Permissible peak 151 Nm; Permissible avg 75 Nm; Permissible momentary 268 Nm; Design life 9000 h
    Reduction 80: Rated torque 79 Nm; Permissible peak 202 Nm; Permissible avg 126 Nm; Permissible momentary 350 Nm; Design life 10000 h
    Reduction 100: Rated torque 96 Nm; Permissible peak 233 Nm; Permissible avg 151 Nm; Permissible momentary 420 Nm; Design life 10000 h

Caractéristiques / Spécifications techniques

• Series: FHD Series (Ultra-short top-hat flexspline, combined type flat-profile)
• Axial length: approx. 50% shorter vs FHG series (as stated)
• Output side bearing: high-rigidity cross roller bearings
• Features: ultra-thin hollow profile; compact/streamlined; high torque; zero backlash; coaxial I/O
• Starting torque (cNm) by reduction ratio: see Starting torque table above
• Mechanical limits (Mb, Ft, Fa) by model: see Mechanical limits table above
• Performance: rated torque, permissible peak/average/momentary torques, input speed limits, backlash, weight and design life by model and reduction ratio: see Performance Data above