Harmonic Drive LLC | 247 Lynnfield St. Peabody, MA 01960 | 800-921-3332
Harmonic Drive and Harmonic Planetary are registered trademarks of Harmonic Drive LLC.


FD-0

The FD series is an extremely compact differential unit that allows you to fine-tune the phase and timing during operation. The unit type is provided with the housing so additional gears or pulleys required for the machine can be directly mounted onto it.
Pancake

Key Features:

  • Pancake component set
  • Ultra compact differential unit
  • Backlash is very small and unit requires no assembly adjustment
  • Very large reduction ratios between the adjusting shaft and the output, it allows precision position adjustment and requires little torque for adjusting the shaft
  • Easily installed into OEM equipment
  • Consists of only four parts and is mounted coaxially

DXF CAD Files

PDF CAD Files

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Rotational direction and reduction ratio

The section describes how to uses the unit as differential unit.
(R indicates the reduction ratio value in the ratings table.)

Model Ordering Code

FD - 20 - 80 - 0 - GR - SP
1 2 3 4 5 6

1. Type : FD series
2. Size : 20 , 25 , 32 , 40 , 50 , 65 , 80 , 100
3. Reduction Ratio : 78 , 80 , 96 , 100 , 104 , 120 , 128 , 131 , 132 , 157 , 158 , 160 , 194 , 200 , 208 , 242 , 258 , 260 , 320
(Note : Ratio size depends upon unit size.)
4. Models and symbols
  • 0 = Unit type
  • 2 = Component type
5. Specification : GR = Standard type
6. SP : Customized Specification

List of Ratings

Rotational speed rpm 3500 2850 1750 1450 1150 960 870 750 600 500 CAD Downloads
Size Gear Ratio N.m In.lb N.m In.lb N.m. In.lb N.m In.lb N.m In.lb N.m In.lb N.m In.lb N.m In.lb N.m In.lb N.lm In.lb Component Type Unit Type
20 80 29 257 30 266 30 266 30 266 30 266 30 266 30 266 30 266 30 266 30 266 PDF DXF PDF DXF
100 30 266 31 274 36 319 36 319 36 319 36 319 36 319 36 319 36 319 36 319
128 31 274 34 301 42 372 43 381 43 381 43 381 43 381 43 381 43 381 43 381
160 32 283 35 310 42 372 45 398 48 425 49 434 49 434 49 434 49 434 49 434
25 80 46 407 50 443 57 504 57 504 57 504 57 504 57 504 57 504 57 504 57 504 PDF DXF PDF DXF
100 49 434 53 469 67 593 67 593 79 699 79 699 79 699 79 699 79 699 79 699
120 52 460 55 487 70 620 70 620 80 708 82 726 89 788 91 805 96 850 96 850
160 54 478 57 504 71 628 73 646 80 708 83 735 89 788 92 814 98 867 108 956
200 55 487 59 522 71 628 74 655 80 708 84 743 89 788 92 814 98 867 108 956
32 78 98 867 108 956 108 956 108 956 108 956 108 956 108 956 108 956 108 956 108 956 PDF DXF PDF DXF
100 108 956 118 1044 137 1212 147 1301 157 1389 157 1389 157 1389 157 1389 157 1389 157 1389
131 108 956 118 1044 137 1212 157 1389 167 1478 176 1558 176 1558 196 1735 206 1823 206 1823
157 108 956 118 1044 137 1212 157 1389 167 1478 176 1558 176 1558 196 1735 206 1823 216 1912
200 108 956 118 1044 137 1212 157 1389 167 1478 176 1558 176 1558 196 1735 206 1823 216 1912
260 108 956 118 1044 137 1212 157 1389 167 1478 176 1558 176 1558 196 1735 206 1823 216 1912
40 80 196 1735 196 1735 196 1735 196 1735 196 1735 196 1735 196 1735 196 1735 196 1735 196 1735 PDF DXF PDF DXF
100 235 2080 245 2168 265 2345 265 2345 265 2345 265 2345 265 2345 265 2345 265 2345 265 2345
128 235 2080 245 2168 294 2602 314 2779 343 3036 363 3213 372 3292 372 3292 372 3292 372 3292
160 235 2080 245 2168 294 2602 314 2779 343 3036 363 3213 372 3292 392 3469 421 3726 451 3991
200 235 2080 245 2168 294 2602 314 2779 343 3036 363 3213 372 3292 392 3469 421 3726 451 3991
258 235 2080 245 2168 294 2602 314 2779 343 3036 363 3213 372 3292 392 3469 421 3726 451 3991
50 80 353 3124 353 3124 353 3124 353 3124 353 3124 353 3124 353 3124 353 3124 353 3124 353 3124 PDF DXF PDF DXF
100 441 3903 470 4160 549 4859 559 4947 559 4947 559 4947 559 4947 559 4947 559 4947 559 4947
120 441 3903 470 4160 549 4859 588 5204 637 5637 666 5894 666 5894 666 5894 666 5894 666 5894
160 441 3903 470 4160 549 4859 588 5204 637 5637 676 5983 696 6160 754 6673 794 7027 843 7461
200 441 3903 470 4160 549 4859 588 5204 637 5637 676 5983 696 6160 754 6673 794 7027 843 7461
242 441 3903 470 4160 549 4859 588 5204 637 5637 676 5983 696 6160 754 6673 794 7027 843 7461
65 78 - - - - 764 6761 764 6761 764 6761 764 6761 764 6761 764 6761 764 6761 764 6761 PDF DXF PDF DXF
104 - - - - 1030 9116 1100 9735 1180 10443 1190 10532 1190 10532 1190 10532 1190 10532 1190 10532
132 - - - - 1030 9116 1100 9735 1180 10443 1250 11063 1290 11417 1380 12213 1460 12921 1570 13895
158 - - - - 1030 9116 1100 9735 1180 10443 1250 11063 1290 11417 1380 12213 1460 12921 1570 13895
208 - - - - 1030 9116 1100 9735 1180 10443 1250 11063 1290 11417 1380 12213 1460 12921 1570 13895
260 - - - - 1030 9116 1100 9735 1180 10443 1250 11063 1290 11417 1380 12213 1460 12921 1570 13895
80 80 - - - - 1370 12125 1370 12125 1370 12125 1370 12125 1370 12125 1370 12125 1370 12125 1370 12125 PDF DXF PDF DXF
96 - - - - 1800 15930 1800 15930 1800 15930 1800 15930 1800 15930 1800 15930 1800 15930 1800 15930
128 - - - - 2040 18054 2180 19293 2340 20709 2490 22037 2570 22745 2710 23984 2710 23984 2710 23984
160 - - - - 2040 18054 2180 19293 2340 20709 2490 22037 2570 22745 2740 24249 2950 26108 3130 27701
194 - - - - 2040 18054 2180 19293 2340 20709 2490 22037 2570 22745 2740 24249 2950 26108 3130 27701
258 - - - - 2040 18054 2180 19293 2340 20709 2490 22037 2570 22745 2740 24249 2950 26108 3130 27701
320 - - - - 2040 18054 2180 19293 2340 20709 2490 22037 2570 22745 2740 24249 2950 26108 3130 27701
100 80 - - - - 2470 21860 2470 21860 2470 21860 2470 21860 2470 21860 2740 24249 2470 21860 2470 21860 PDF DXF PDF DXF
100 - - - - 3720 32922 3720 32922 3720 32922 3720 32922 3720 32922 3720 32922 3720 32922 3720 32922
120 - - - - 3720 32922 3980 35223 4280 37878 4560 40356 4710 41684 4740 41949 4740 41949 4740 41949
160 - - - - 3720 32922 3980 35223 4280 37878 4560 40356 4710 41684 5010 44339 5390 47702 5720 50622
200 - - - - 3720 32922 3980 35223 4280 37878 4560 40356 4710 41684 5010 44339 5390 47702 5720 50622
242 - - - - 3720 32922 3980 35223 4280 37878 4560 40356 4710 41684 5010 44339 5390 47702 5720 50622
320 - - - - 3720 32922 3980 35223 4280 37878 4560 40356 4710 41684 5010 44339 5390 47702 5720 50622


Product Drawing

Unit type (FD-0)

Unit: mm

Symbol /Size 20 25 32 40 50 65

80

100

ØA 85 95 120 145 185 235

290

360

ØB(h7) 52 65 85 100 125 140

180

210

ØC 20 30 40 50 60 70

90

110

D 73 81 95 113 132 147

178

212

Mass(kg) 2.0 2.6 5.0 8.3 17 34

59

118



Component type (FD-2)

Unit: mm

Symbol /Size 20 25 32 40 50 65

80

100

ØA(g7) 70 85 110 135 170 215

265

330

B 12 14 18 21 26 35

41

50

C 1 1 1 1 1 1

1

1

D 25 29 37 43 53 71

83

101

Mass(kg) 0.6 1.0 2.0 3.6 7.2 14

26

48

Please confirm dimensions and specifications with the drawing issued by Harmonic Drive LLC.

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