The outer ring and inner ring of the SHF (SHG) harmonic reducer bearing are of an integral structure, which allows for stable rotation accuracy and torque. This makes it an ideal choice for the SHF (SHG) series harmonic reducer.
Harmonic reducer bearings are an integral component of harmonic drive systems, which are specialized gear mechanisms known for high precision, high reduction ratios, and compact design. These systems are commonly used in robotics, aerospace, medical equipment, and other high-tech industries where precise motion control and positioning are essential. The bearing within a harmonic reducer is critical for maintaining the system's performance, as it supports both the unique strain wave gearing structure and the highly accurate, backlash-free motion that harmonic drives provide.
Bearings in harmonic drives must meet specific requirements to facilitate the unique motion and structure of the drive. These bearings are typically integrated with the wave generator, where they experience a combination of radial, axial, and tilting loads due to the flexspline’s deformation and the overall system’s high torque output.
Key Types and Configurations:
1. Crossed Roller Bearings: Often found in harmonic drives, these bearings feature rollers that are alternately crossed at right angles to each other. This design provides high stiffness and can support axial, radial, and moment loads within a compact space, making it ideal for applications that need precision and stability, such as robotic joints.
2. Thin Section Bearings: Harmonic reducers often use thin-section bearings, which provide high precision and load support while keeping the overall size of the drive compact. They are also lightweight, which is beneficial in applications like aerospace and medical equipment, where space and weight constraints are strict.
3. High-Precision Ball Bearings: While less common, some harmonic reducers may use high-precision ball bearings, especially in smaller or lighter-duty applications. These bearings can still provide excellent rotation accuracy with lower friction.
Features of Rotary Table Bearings
1. High Load-Bearing Capability: Harmonic reducer bearings handle multiple load types simultaneously, allowing for high torque transmission in compact systems.
2. Minimal Backlash: Due to the unique harmonic drive mechanics and high-precision bearings, backlash is virtually eliminated, which is crucial for applications requiring precise positioning.
3. Compact and Lightweight: Harmonic reducer bearings are designed to support a high reduction ratio in a compact, lightweight package. This helps in reducing the footprint of the machinery while still delivering high torque.
4. High Stiffness and Accuracy: Bearings used in harmonic drives have high stiffness, allowing for accurate, smooth rotation, even under heavy loads. This enhances the reliability and durability of the overall drive system.
5. Reduced Friction and Heat Generation: Properly designed bearings minimize friction, which is critical in high-speed applications to reduce wear and prevent excessive heat buildup.
|
Model |
Dimension |
Outer ring mounting hole |
Inner ring mounting hole |
Basic load rating |
Weight |
|
d |
d3 |
D |
H |
C |
B |
B1 |
d1 |
d2 |
Center diameter
dm |
Mounting hole size 1 |
Mounting hole
size 2
(On the reverseof the seal) |
Center diameter
dm |
Mounting hole size (On the front the seal) |
Mounting hole size
(On the front the seal) |
Cr |
Cor |
KG |
|
Unit：mm |
KN |
KN |
|
SHG(SHF)-14 |
38 |
36 |
70 |
15.1 |
14.1 |
14.6 |
5 |
57 |
53 |
64 |
8-φ3.5 |
2-M3(Thread depth6） |
44 |
12-M3(Thread depth6） |
|
6.1 |
14 |
0.11 |
|
SHG(SHF)-17 |
47 |
44.1 |
80 |
17 |
16 |
16.4 |
6.5 |
68.1 |
64.1 |
74 |
12-φ3.5 |
4-M3(Thread depth6） |
54 |
20-M3(Thread depth6） |
|
9.4 |
16.1 |
0.36 |
|
SHG(SHF)-20 |
54 |
- |
90 |
18.5 |
17.5 |
17.5 |
- |
78 |
84 |
84 |
12-φ3.5 |
4-M3(Thread depth6） |
62 |
16-M3(Thread depth6） |
4-M3(Thread depth6） |
20.2 |
31.1 |
0.44 |
|
SHG(SHF)-25 |
68 |
66 |
110 |
20.7 |
18.7 |
19.7 |
7.5 |
94.8 |
102 |
102 |
12-φ4.5 |
4-M3(Thread depth6） |
77 |
16-M4(Thread depth8） |
4-M3(Thread depth6） |
28.5 |
45.2 |
0.7 |
|
SHG(SHF)-32 |
88 |
84 |
142 |
24.4 |
23.4 |
23.4 |
8 |
123 |
132 |
132 |
12-φ5.5 |
4-M4(Thread depth8） |
100 |
16-M5(Thread depth8） |
4-M4(Thread depth8） |
47.3 |
77.3 |
1.57 |
|
SHG(SHF)-40 |
108 |
106 |
170 |
30 |
29 |
28.5 |
9.5 |
148 |
158 |
158 |
12-φ6.5 |
6-M4(Thread depth8） |
122 |
16-M6(Thread depth10） |
4-M5(Thread depth10） |
35.5 |
71.2 |
2.4 |
|
SHG(SHF)-50 |
135 |
129 |
214 |
36 |
34 |
34.5 |
11 |
188 |
200 |
200 |
12-φ9 |
6-M5(Thread depth10） |
154 |
16-M8(Thread depth112） |
8-M5(Thread depth10） |
80.4 |
151.9 |
4.5 |
