Harmonic Drive Bearings
Bearing
Inner ring
Outer ring
Width
Dynamic load rating
Static load rating
Radial Deformation
Input rotate speed
Output torque
Model
ID
OD
B
Cr
Cor
Max. mm
r/min
N.m
3E904KAT2
18.8
25
4
3.75
3.12
0.2
3000
2
3E905KAT2
24
32
5
4.74
3.75
0.2
3000
6
3E806KAT2
30
40
6
7.12
5.83
0.3
3000
16
1000907AKIT2
35.8
48.2
8
9.93
8.36
0.3
3000
30
3E907KAT2
37
50
8
12.63
12
0.3
3000
30
3E809KAT2
45
60
9
12.89
11.55
0.4
3000
50
1000809AKIT2
45.7
61.8
9.5
12.89
11.55
0.4
3000
50
10008810AKT2
48
63
9.7
12.89
11.55
0.4
3000
50
1000912AKT2
60
80
12
27.19
28.18
0.5
3000
120
3E911KAT2
57
75
12
14.76
13.18
0.5
3000
7.5
3E812KAT2
60
80
13
15.51
14.44
0.5
3000
12
3E814KAT2
70
95
15
22.38
21.57
0.6
3000
20
3E815KAT2
75
100
15
26.4
25.67
0.6
3000
25
3E816KAT2
71
95
15
0.8
3E818KAT2
90
120
18
34.7
34.94
1
3000
45
3E822KAT2
110
150
24
43.55
45.63
1
1500
80
3E824KAT2
120
160
24
57.02
57.75
1
1500
120
3E826KAT2
130
175
30
81.59
86.1
1
1500
170
3E830KAT2
150
200
30
91.6
102.67
1
1500
200
3E832KAT2
160
220
35
115.66
127.59
1.25
1500
220
3E836KAT2
180
240
35
130.04
146.47
1.5
1500
250
3E838KAT2
190
250
40
139.96
160.42
1.5
1500
350
3E842KAT2
210
280
45
173.15
210.91
1.5
1500
400
3E844KAT2
220
300
45
181.72
231
1.5
1500
500
3E848KAT2
240
320
48
190.2
231
2
1500
560
3E860KAT2
300
400
60
252
502
3
1200
3E862KAT2
310
420
60
252
502
3
1200
3E872KAT2
360
480
72
338
731
3
1200
F14
25.07
33.896
6.095
4.74
3.75
0.2
3000
8
M14
25.07
33.896
6.095
5.53
4.73
0.2
3000
12
F17
30.3
41.722
6.16
7.12
5.83
0.3
3000
16
M17
30.3
41.722
6.16
8.31
7.35
0.3
3000
24
F20
35.56
49.073
7.24
9.93
8.36
0.3
3000
30
M20
35.56
49.073
7.24
12.63
12
0.3
3000
45
F25
45.212
61.341
9.015
12.89
11.55
0.4
3000
50
M25
45.212
61.341
9.015
16.4
16.58
0.4
3000
75
F32
58.928
79.756
11.81
22.28
20.91
0.5
3000
120
M32
58.928
79.756
11.81
27.19
28.18
0.5
3000
180
F40
71.12
98.171
14.47
26.4
25.67
0.6
3000
200
M40
71.12
98.171
14.47
34.51
33.51
0.6
3000
200
F5-Y1
9.8
13.026
2.1
1.2
1
0.15
3000
1.5
F8-Y1
14.22
19.63
3.3
2.8
2.4
0.15
3000
5
F10-Y1
14.5
20
4
2.05
1.46
0.2
3000
0.2
F10-Y2
20.4
27.5
4.5
2.05
1.46
0.2
3000
0.2
F10-Y3
22
30
6
3.44
2.6
0.2
3000
0.6
F11
20.73
27.262
4.6
3.51
3.1
0.2
3000
6
F14-Y1
25.7
33.896
6.35
5.15
4.07
0.3
3000
1.6
F14-Y2
25.5
34
5
5.15
4.07
0.3
3000
1.6
F14-Y3
26.5
35.5
6
5.15
4.07
0.3
3000
1.6
F14-F1
25.07
33.896
4
4.74
3.75
0.8
3000
6
F14-F2
25.07
33.896
6.35
4.74
3.75
0.8
3000
6
F17-Y1
30.3
41.72
6.68
5.15
4.07
0.3
3000
1.6
F17-Y2
33
42
8
5.15
4.07
0.3
3000
1.6
F17-Y3
35.5
48
8
7.13
5.86
0.3
3000
3
F17-Y4
35.8
48.2
7.13
5.86
0.3
3000
3
F17-F1
30.3
41.72
4.6
7.12
5.83
0.9
3000
16
F17-F2
30.3
41.72
6.68
7.12
5.83
0.9
3000
16
F20-Y1
35.56
49.07
8.13
7.13
5.86
0.3
3000
3
F20-Y2
42.52
54
8.1
7.13
5.86
0.3
3000
3
F20-Y3
43
56
9
7.13
5.86
0.3
3000
3
F20-F1
35.56
49.068
5.2
9.92
8.37
1
3000
30
F20-F2
35.58
49.1
8.13
9.92
8.37
1
3000
30
F20-F3
35.56
49.068
8.13
9.92
8.37
1
3000
30
F25-Y1
45.212
61.35
9
15.51
14.44
0.5
3000
12
F25-Y2
45
61.35
9
15.51
14.44
0.5
3000
12
F25-Y3
48
63
9.5
15.51
14.44
0.5
3000
12
F25-Y4
55
72
10
14.76
13.18
0.5
3000
7.5
F25-F1
45.212
61.334
6.3
12.88
11.56
1
3000
50
F25-F2
45.212
61.334
9.015
12.88
11.56
1
3000
50
F32-Y1
58.928
79.95
11.81
15.51
14.44
0.5
3000
1
F32-F1
58.928
79.748
8.64
20.22
19.15
1.2
3000
90
F32-F2
58.928
79.748
11.81
20.22
19.15
1.2
3000
90
F40-Y1
71.12
98.171
14.47
26.4
25.67
0.6
3000
25
F40-F1
71.12
98.171
14.475
34.51
33.51
1.5
3000
200
F45-Y1
79.4
110.4
16.28
26.4
25.67
0.8
3000
25
F50-F1
88.9
122.71
18.09
34.7
34.94
1
3000
45
MTHBT-3
MTHBT-5
9.8
13.026
2
1.2
1
0.15
3000
1.5
MTHBT-8
14.22
19.63
3.1
2.8
2.4
0.15
3000
5
MTHBT-11
20.73
27.262
4.6
3.51
3.1
0.2
3000
6
MTHBT-14
25.07
33.896
6.095
4.74
3.75
0.2
3000
8
MTHBT-17
30.3
41.722
6.16
7.12
5.83
0.3
3000
16
MTHBT-20
35.56
49.073
7.24
9.93
8.36
0.3
3000
30
MTHBT-25
45.212
61.341
9.015
12.89
11.55
0.4
3000
50
MTHBT-32
58.928
79.756
11.81
22.28
20.91
0.5
3000
120
MTHBT-40
71.12
98.171
14.475
29.02
28.95
0.6
3000
250
MTHBT-45
79.476
110.434
16.287
36.15
35.1
0.8
3000
400
MTHBT-50
88.9
122.707
18.085
45.03
46.09
1
3000
450
MTHBT-14D
25.07
33.896
3.95
4.74
3.75
0.2
3000
8
MTHBT-17D
30.3
41.722
4.6
7.12
5.83
0.3
3000
16
MTHBT-20D
35.56
49.073
5.2
9.93
8.36
0.3
3000
30
MTHBT-25D
45.212
61.341
6.35
12.89
11.55
0.4
3000
50
MTHBT-32D
58.928
79.756
8.64
22.28
20.91
0.5
3000
120
MTHBT-14M
25.07
33.896
6.095
5.53
4.73
0.2
3000
12
MTHBT-17M
30.3
41.722
6.16
8.31
7.35
0.3
3000
24
MTHBT-20M
35.56
49.073
7.24
12.63
12
0.3
3000
45
MTHBT-25M
45.212
61.341
9.015
16.4
16.58
0.4
3000
75
MTHBT-32M
58.928
79.756
11.81
27.19
28.18
0.5
3000
180
Flexible bearings for harmonic reducer are mainly used in harmonic reducer. Harmonic transmission includes three basic components: wave generator, Flexspline, Circular Spline and flexible bearing. Flexible bearings are the core components, and the transmission meets the performance requirements of high deceleration ratio through the elastic deformation of bearings.
In the work of flexible bearing, the inner ring is installed on the elliptical cam, the outer ring is installed on the Flexspline, and the elastic deformation occurs with the rotation of the cam, which not only bears the cyclic stress load, but also bears the alternating stress load.
These points put forward high requirements for the design and manufacture of bearing inner ring and outer ring and cage, and only a few enterprises such as Japan and the United States can produce it. Luoyang Monton Flexible Bearing has reached the advanced level of design and manufacture of flexible bearings for harmonic transmission. The design of flexible bearing has formed a complete theoretical system, the manufacturing technology of the product is becoming more and more perfect, mature, and the product quality is becoming more and more stable. The 3E series harmonic drive reducer flexible bearing has been successfully applied to the harmonic drive device of "Shenzhou" and series spaceship, which has contributed to my manned spaceflight industry.
Because the inner ring of the flexible rolling bearing is tightly sheathed with the rigid cam of the wave generator. Therefore, it can be regarded as a rigid elliptical ring, the rolling body (generally a ball) is a particle with concentrated mass connected with the inner and outer rings through the spring, and the outer ring is an elastic thin-wall ring, and its original curve is the inner isometric curve of the original curve of the Flexspline.
Harmonic drive transmission consists of three basic components: wave generator, flex spline, Circular Spline and flexible bearing. Among them, the flexible bearing is the core component, and the transmission achieves the performance requirement of high deceleration ratio through the elastic deformation of the bearing.
When the flexible bearing is in operation, the inner ring is mounted/installed on the elliptical cam, which bears the cyclic stress load during the work; while the outer ring is mounted/installed on the Flexspline, and elastically deforms with the rotation of the cam during the work, which not only bears the cyclic stress load, but also withstands the alternating stress load.
Flexible rolling bearing utilizes controllable elastic deformation of the flexible components to transmit motion and power. It has characteristics of large transmission ratio, wide application range, high precision, small air return, large carrying capacity, high efficiency, small volume/size, light weight, smooth transmission, low noise, and can transfer motion to sealed space.
Robot bearing/harmonic drive bearing is a special kind which easily deforms in a reversible way.
It has a very thin outer ring which varies from round shape to oval interatively during its working time. easily double sealed bearing designed primarily for application of radial load—deep ball grooves also permit application of thrust load in either direction, often used in conjunction with another bearing.
Our company has professional sales and technical engineers who are responsible for providing users with technical consultation, technical services and product technical training on precision bearing information and installation and use. Perfect pre-sales, in-sales and after-sales services constitute a guarantee system for high-quality services, providing users with reliable quality bearing products, and creating a good user experience and rich benefits for every customer.
If you have any questions about our products and services, please contact our customer service department directly.
