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Features

SHF Unit 2UH:
SHF unit 2UH Harmonic Drive® have been developed focusing on ease of use and total cost reduction. With a hollow-shaft construction adopted as standard, these Harmonic Drive® are credited with a high level of space economy, because the hollow-shaft construction provides room for other drive shafts and can also be used for wiring. Harmonic Drive® of this type can also provide direct support for external loads due to their built-in high rigidity cross roller bearings.

• Simple and compact configuration
• High torque capacity
• High rigidity
• Non backlash
• High positional accuracy and high rotational accuracy
• High efficiency
• Smoothness of operation
• Coaxial input and output
• Available in component and unit types:
  Outer diameter: ø74 to ø246mm for all 9 sizes
  Reduction ratio: 30 to 160
  Rated torque: 4.0 to 745 N·m.
SHF Unit 2UJ:
Harmonic Drive® have been developed focusing on the importance of ease of use and total cost reduction. In order to facilitate connectivity with motors, SHF Unit 2UJ Harmonic Drive® are offered with input axes included as standard. SHF Unit 2UJ series products are general purpose Harmonic Drive® that are finding their way into a wider variety of applications. Main features are:

• Simple and compact configuration
• High torque capacity
• High rigidity
• Non backlash
• High positional accuracy and high rotational accuracy
• High efficiency
• Smoothness of operation
• Coaxial input and output
• Available in component and unit types:
  Outer diameter: ø74 to ø246mm for all 9 sizes
  Reduction ratio: 30 to 160
  Rated torque: 4.0 to 30 N·m.

Models & Symbols
a
1. Type: SHF series
2. Size: 14, 17, 20, 25, 32, 40, 45, 50, 58
3. Reduction ratio: 30, 50, 80, 100, 120, 160
4. Models and symbols:
    • 2A-GR = Component type ("2A-R" for sizes 14 and 17)
    • 2UH = Unit / Hollow shaft type
    • 2UJ = Unit / Shaft input type
    • 2SO = Simple unit (Flat type)
    • 2SH = Simple unit (Hollow shaft type)
5. Special specification (Suffix "SP" is only special specification)

  Specification
Size
Reduction ratio
Rated torque at 2000r/min
Allowable peak torque at start and stop
Allowable average torque
Allowable maximum momentary torque
Maximum input speed (Grease lubrication)
N·m
N·m
N·m
N·m
r/min
14
30
4.0
9
6.8
17
8500
50
5.4
18
6.9
35
80
7.8
23
11
47
100
7.8
28
11
54
17
30
8.8
16
12
30
7300
50
16
34
26
70
80
22
43
27
87
100
24
54
39
110
120
24
54
39
86
20
30
15
27
20
50
6500
50
25
56
34
98
80
34
74
47
127
100
40
82
49
147
120
40
87
49
147
160
40
92
49
147
25
30
27
50
38
95
5600
50
39
98
55
186
80
63
137
87
255
100
67
157
108
284
120
67
167
108
304
160
67
176
108
314
Size
Reduction ratio
Rated torque at 2000r/min
Allowable peak torque at start and stop
Allowable average torque
Allowable maximum momentary torque
Maximum input speed (Grease lubrication)
N·m
N·m
N·m
N·m
r/min
32
30
54
100
75
200
4800
50
76
216
108
382
80
118
304
167
568
100
137
333
216
647
120
137
353
216
686
160
137
372
216
686
40
50
137
402
196
686
4000
80
206
519
284
980
100
265
568
372
1080
120
294
617
451
1180
160
294
647
451
1180
45
50
176
500
265
950
3800
80
313
706
390
1270
100
353
755
500
1570
120
402
823
620
1760
160
402
882
630
1910
50
50
245
715
350
1430
3500
80
372
941
519
1860
100
470
980
666
2060
120
529
1080
813
2060
160
529
1180
843
2450
58
50
353
1020
520
1960
3000
80
549
1480
770
2450
100
696
1590
1060
3180
120
745
1720
1190
3330
160
745
1840
1210
3430

Product Drawing

• Hollow shaft type Unit (Full unit <2UH> / simple unit <2SH>)
S
- Indicates the construction of the simple unit type.
(Unit:mm)
Symbol /Size
14
17
20
25
32
40
45
50
58
øA
54
64
75
90
115
140
160
175
201
B
52.5
56.5
51.5
55.5
65.5
79
85
93
106
C
12
12
5
6
7
8
8
9
10
øD h7
74
84
95
115
147
175
195
220
246
øE
14
19
21
29
36
46
52
60
70
Mass(kg)
2UH
0.71
1.00
1.38
2.1
4.5
7.7
10.0
14.5
20.0
2SH
0.45
0.63
0.89
1.44
3.1
5.4
6.9
10.2
14.1

• Shaft input type unit (Full unit <2UJ> / Simple unit <2SO>)

- Indicates the construction of the simple unit type.
(Unit:mm)
Symbol /Size
14
17
20
25
32
40
45
50
58
øA
54
64
75
90
115
140
160
175
201
B
50.5
56
63.5
72.5
84.5
100
108
121
133
C
14
16
20
25
25
30
30
35
35
øD h7
74
84
95
115
147
175
195
220
246
øE h6
6
8
10
14
14
16
19
22
22
Mass(kg)
2UJ
0.66
0.94
1.38
2.1
4.4
7.3
9.8
13.9
19.4
2SO
0.41
0.57
0.81
1.31
2.94
5.1
6.5
9.6
13.5

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