List of Technical Document SITE MAP JAPANESE CHINESE
Harmonic Drive Systems Inc.Corporate InformationProduct InformationIR Information Contact us
Home > Product Information > Harmonic Drive® > FD Series Differential Gear
Product Information
Harmonic Drive®
AccuDrive®
DirectDrive Motor
Rotary Actuator
Linear Actuator
Optical Galvano Scanner
Sensor System
List of Technical Document
Principles of Harmonic Drive®
FD series Differential GearFD series Differential Gear
| Features | Models & Symbols | Specification | Product drawing | Harmonic Drive® list
Features
The differential unit FD series is an extremely compact differential unit that allows you to fine-tune the phase and timing during operation by applying the unique operating principle of Harmonic Drive®.
The FD series consist of four parts like the pancake-type component unit.
The unit type is cased so that the gear and pulley for transmission can be directly installed in it.
• As the differential mechanism is put together as one,it is easily installed in the equipment.
• It consists of only four parts and is coaxially put together.
• As the backlash is very small,the unit requires no assembly adjustment at all,which helps reduce the assembly cost significantly
• As it has very large reduction ration between the adjusting shaft and the output,it allows highly accurate and minute position adjustment easily and requires little torque for adjusting the shaft.
Structure of the FD series Differential Gear
<Rotational direction and reduction ratio>
The rotational direction is the same as the FB.
The section describes how to uses the unit as differential unit.
(R indicates the reduction ratio value in the ratings table.)
Structure of the FD series component type
Structure of the FD series component type

page top
Models & Symbols
Models & Symbols
1 Type: FD series
2 Size: 14, 20, 25, 32, 40, 50, 65, 80, 100
3
Reduction ratio:  78, 80, 88, 96, 100, 104, 110, 120, 128, 131, 132, 157, 158, 160, 194, 200, 208, 242, 258, 260, 320
4 Models and symbols:
• 0 = Unit type
• 2 = Component type
5 Specification: G= New type
•Usage example

•Example of assembly

•Difference between the differential gear and the Harmonic differential

•Example of design

•Gear selection data

•Example of calculation

page top
Specification
Rotational speed r/min 3500 2850 1750 1450 1150 960 870 750 600 500
Size Reduction ratio N·m N·m N·m N·m N·m N·m N·m N·m N·m N·m
20 80 29 30 30 30 30 30 30 30 30 30
100 30 31 36 36 36 36 36 36 36 36
128 31 34 42 43 43 43 43 43 43 43
160 32 35 42 45 48 49 49 49 49 49
25 80 46 50 57 57 57 57 57 57 57 57
100 49 53 67 67 79 79 79 79 79 79
120 52 55 70 70 80 82 89 91 96 96
160 54 57 71 73 80 83 89 92 98 108
200 55 59 71 74 80 84 89 92 98 108
32 78 98 108 108 108 108 108 108 108 108 108
100 108 118 137 147 157 157 157 157 157 157
131 108 118 137 157 167 176 176 196 206 206
157 108 118 137 157 167 176 176 196 206 216
200 108 118 137 157 167 176 176 196 206 216
260 108 118 137 157 167 176 176 196 206 216
40 80 196 196 196 196 196 196 196 196 196 196
100 235 245 265 265 265 265 265 265 265 265
128 235 245 294 314 343 363 372 372 372 372
160 235 245 294 314 343 363 372 392 421 451
200 235 245 294 314 343 363 372 392 421 451
258 235 245 294 314 343 363 372 392 421 451
50 80 353 353 353 353 353 353 353 353 353 353
100 441 470 549 559 559 559 559 559 559 559
120 441 470 549 588 637 666 666 666 666 666
160 441 470 549 588 637 676 696 754 794 843
200 441 470 549 588 637 676 696 754 794 843
242 441 470 549 588 637 676 696 754 794 843
65 78 - - 764 764 764 764 764 764 764 764
104 - - 1030 1100 1180 1190 1190 1190 1190 1190
132 - - 1030 1100 1180 1250 1290 1380 1460 1570
158 - - 1030 1100 1180 1250 1290 1380 1460 1570
208 - - 1030 1100 1180 1250 1290 1380 1460 1570
260 - - 1030 1100 1180 1250 1290 1380 1460 1570
80 80 - - 1370 1370 1370 1370 1370 1370 1370 1370
96 - - 1800 1800 1800 1800 1800 1800 1800 1800
128 - - 2040 2180 2340 2490 2570 2710 2710 2710
160 - - 2040 2180 2340 2490 2570 2740 2950 3130
194 - - 2040 2180 2340 2490 2570 2740 2950 3130
258 - - 2040 2180 2340 2490 2570 2740 2950 3130
320 - - 2040 2180 2340 2490 2570 2740 2950 3130
100 80 - - 2470 2470 2470 2470 2470 2740 2470 2470
100 - - 3720 3720 3720 3720 3720 3720 3720 3720
120 - - 3720 3980 4280 4560 4710 4740 4740 4740
160 - - 3720 3980 4280 4560 4710 5010 5390 5720
200 - - 3720 3980 4280 4560 4710 5010 5390 5720
242 - - 3720 3980 4280 4560 4710 5010 5390 5720
320 - - 3720 3980 4280 4560 4710 5010 5390 5720

page top
Product drawing
Unit type (FD-0)
Product drawing
(Unit:mm)
Symbol /Size 20 25 32 40 50 65
øA 85 95 120 145 185 235
øB(h7) 52 65 85 100 125 140
øC 20 30 40 50 60 70
D 73 81 95 113 132 147
Mass(kg) 2.0 2.6 5.0 8.3 17 34
Symbol /Size 80 100 - - - -
øA 290 360 - - - -
øB(h7) 180 210 - - - -
øC 90 110 - - - -
D 178 212 - - - -
Mass(kg) 59 118 - - - -

Component type (FD-2)
Product drawing
(Unit:mm)
Symbol /Size 20 25 32 40 50 65
øA(g7) 70 85 110 135 170 215
B 12 14 18 21 26 35
C 1 1 1 1 1 1
D 25 29 37 43 53 71
Mass(kg) 0.6 1.0 2.0 3.6 7.2 14
Symbol /Size 80 100 - - - -
øA(g7) 265 330 - - - -
B 41 50 - - - -
C 1 1 - - - -
D 83 101 - - - -
Mass(kg) 26 48 - - - -

Please confirm dimensions and specification with the drawing issued by Harmonic Drive Systems.

page top
| Features | Models & Symbols | Specification | Product drawing | Harmonic Drive® list
JASDAQJ STOCKSystem management attestationHarmonic Drive Systems Inc.
The academic and general nomenclature for "Harmonic Drive®" is "harmonic drive gearing". "Harmonic Drive®"is a registered trademark that can be used only on products which are manufactured and sold by Harmonic Drive Systems Inc.
Last UpdateCopyright