LHT High Precision Harmonic Gearbox
LHT series features a hollow flanged barrel structure, with a compact overall design and sleek, simple construction. The flexible wheel and rigid wheel are connected by high rigidity cross roller bearings, making it an easily operated modular product.
Key Features
- Compact and concise design
- Input and output coaxial
- Zero backlash
- Excellent positional accuracy and repeatability.
- Product Description
- Specifications
- Product Video
- Application
- FAQ
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Product Description
The LHT Series use hat type flexspline. We can divide LHT series into 5 versions, LHT-I, LHT-II,LHT-III,LHT-IV and LHT-V.
Differences Among Different LHT harmonic reducers:
LHT-I: use uni-body type wave generator
LHT-II: cross slider type wave generator
LHT-III: large bore with a hollow hole
LHT-IV: shaft input type
LHT-V: Simple type
Advantages
LHT-I/II:More compact, two connection ways, motor can be connected with the gearbox directly, it's easy for installation.
LHT-III:A large-diameter hollow shaft hole and support bearings in it, fully sealed structure. Suitable for situation where the wire needs to be threaded from the center of the harmonic gearbox.
LHT-IV:The wave generator cam comes with input shaft.Suitable for different input forms, and situation where bevel gears or timing belt drive need to be installed at the input end.
LHT-V：Based on LHT-III series harmonic drive gearbox, users can redesign freely for lower weight and thinner thickness while properties have no change.
Specifications
Specification of LHT/LHN Rated parameters
| Model | Reduction ratio | Rated torque at 2000r/min input | Permissible peak torque at start and stop | Permissible maximum value for average load torque | Permissible maximum momentary torque | Permissible maximum input rotational speed | Permissible average input rotational speed | Backlash | Weight | Design life | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grease | Grease | |||||||||||||
| Nm | kgfm | Nm | kgfm | Nm | kgfm | Nm | kgfm | r/min | r/min | Arc Sec | Kg | Hour | ||
| 8 | 50 | 1.8 | 0.18 | 3.3 | 0.34 | 2.3 | 0.23 | 6.6 | 0.67 | 8500 | 3500 | ≤40 | LHT-I:0.06 | 10000 |
| 100 | 2.4 | 0.24 | 4.8 | 0.49 | 3.3 | 0.34 | 9 | 0.92 | 10000 | |||||
| 11 | 50 | 3.5 | 0.36 | 8.3 | 0.85 | 5.5 | 0.56 | 17 | 1.73 | 8500 | 3500 | ≤30 | LHT-I:0.27 | 10000 |
| 80 | 4.5 | 0.46 | 9.9 | 1.01 | 8 | 0.82 | 22.5 | 2.3 | 10000 | |||||
| 100 | 5 | 0.51 | 11 | 1.12 | 8.9 | 0.91 | 25 | 2.55 | 10000 | |||||
| 14 | 50 | 5.4 | 0.55 | 18 | 1.8 | 6.9 | 0.7 | 35 | 3.6 | 8500 | 3500 | ≤20 |
LHT-I/II:0.4 LHT-III:0.70 LHT-IV:0.66 LHT-V:0.40 LHT-C:0.14 LHN-III:0.56 LHN-IV:0.50 |
10000 |
| 80 | 7.8 | 0.8 | 23 | 2.4 | 11 | 1.1 | 47 | 4.8 | 15000 | |||||
| 100 | 7.8 | 0.8 | 28 | 2.9 | 11 | 1.1 | 54 | 5.5 | 15000 | |||||
| 120 | 7.8 | 0.8 | 28 | 2.9 | 11 | 1.1 | 54 | 5.5 | 15000 | |||||
| 17 | 50 | 16 | 1.6 | 34 | 3.5 | 26 | 2.6 | 70 | 7.1 | 7300 | 3500 | ≤20 |
LHT-I/II:0.54 LHT-III:0.99 LHT-IV:0.90 LHT-V:0.62 LHT-C:0.19 LHN-III:0.79 LHN-IV:0.69 |
10000 |
| 80 | 22 | 2.2 | 43 | 4.4 | 27 | 2.7 | 87 | 8.9 | 15000 | |||||
| 100 | 24 | 2.4 | 54 | 5.5 | 39 | 4 | 110 | 11 | 15000 | |||||
| 120 | 24 | 2.4 | 54 | 5.5 | 39 | 4 | 86 | 8.8 | 15000 | |||||
| 20 | 50 | 25 | 2.5 | 56 | 5.7 | 34 | 3.5 | 98 | 10 | 6500 | 3500 | ≤20 |
LHT-I/II:0.72 LHT-III:1.32 LHT-IV:1.29 LHT-V:0.82 LHT-C:0.27 LHN-III:1.04 LHN-IV:0.98 |
10000 |
| 80 | 34 | 3.5 | 74 | 7.5 | 47 | 4.8 | 127 | 13 | 15000 | |||||
| 100 | 40 | 4.1 | 82 | 8.4 | 49 | 5 | 147 | 15 | 15000 | |||||
| 120 | 40 | 4.1 | 87 | 8.9 | 49 | 5 | 147 | 15 | 15000 | |||||
| 160 | 40 | 4.1 | 92 | 9.4 | 49 | 5 | 147 | 15 | 15000 | |||||
| 25 | 50 | 39 | 4 | 98 | 10 | 55 | 5.6 | 186 | 19 | 5600 | 3500 | ≤20 |
LHT-I/II:1.22 LHT-III:2.02 LHT-IV:1.99 LHT-V:1.40 LHT-C:0.46 LHN-III:1.65 LHN-IV:1.43 |
10000 |
| 80 | 63 | 6.4 | 137 | 14 | 87 | 8.9 | 255 | 26 | 15000 | |||||
| 100 | 67 | 6.8 | 157 | 16 | 108 | 11 | 284 | 29 | 15000 | |||||
| 120 | 67 | 6.8 | 167 | 17 | 108 | 11 | 304 | 31 | 15000 | |||||
| 32 | 50 | 76 | 7.8 | 216 | 22 | 108 | 11 | 382 | 39 | 4800 | 3500 | ≤20 |
LHT-I/II:2.54 LHT-III:4.20 LHT-IV:4.00 LHT-V:2.70 LHT-C:1.00 LHN-III:3.19 LHN-IV:3.17 |
10000 |
| 80 | 118 | 12 | 304 | 31 | 167 | 17 | 568 | 58 | 15000 | |||||
| 100 | 137 | 14 | 333 | 34 | 216 | 22 | 647 | 66 | 15000 | |||||
| 120 | 137 | 14 | 353 | 36 | 216 | 22 | 686 | 70 | 15000 | |||||
| 40 | 50 | 137 | 14 | 402 | 41 | 196 | 20 | 686 | 70 | 4000 | 3000 | ≤20 |
LHT-I/II:4.40 LHT-III:7.20 LHT-IV:7.00 LHT-V:4.06 LHT-C:1.87 LHN-III:5.95 |
10000 |
| 80 | 206 | 21 | 519 | 53 | 284 | 29 | 980 | 100 | 15000 | |||||
| 100 | 265 | 27 | 568 | 58 | 372 | 38 | 1080 | 110 | 15000 | |||||
| 120 | 294 | 30 | 617 | 63 | 451 | 46 | 1180 | 120 | 15000 | |||||
Product Video
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What is a harmonic drive box?
+A harmonic drive box is a type of gear system that produces high reduction ratios in a compact size. It uses the mechanics of a flexible element deforming to transmit motion and achieve high precision and torque.
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How does a harmonic gear box work?
+A harmonic gear box works by using a circular spline, flexspline, and a wave generator. The wave generator deforms the flexspline into an elliptical shape, which then engages with the teeth of the circular spline at two points, providing a high reduction ratio through the difference in tooth count between the engaged elements.
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What are the main components of a strain wave drive?
+The main components are the circular spline (fixed outer ring), the flexspline (flexible inner ring with fewer teeth), and the wave generator (an elliptical disc that fits inside the flexspline).
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What are the advantages of using harmonic/harmonic drive boxes?
+Strain wave/harmonic gearboxes offer high precision, zero backlashes, high torque capacity, compact size, and lightweight. They are also known for their excellent positional accuracy and repeatability.
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What applications are harmonic-type drives used in?
+They are used in applications requiring high precision and reliability, such as robotics, aerospace, defense, medical equipment, and semiconductor manufacturing equipment.
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How do you select a strain wave drive for a specific application?
+Selection depends on factors like torque requirements, desired reduction ratio, space constraints, load capacity, and environmental conditions. It's essential to consult with manufacturers or experts to choose the appropriate model.
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What are the different types of Strain Wave Gearboxes?
+Circular Spline Gearboxes
Cup-Type Gearboxes
Flat Gearboxes
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What is a Circular Spline?
+The Circular Spline in Strain Wave Gearboxes are characterized by their robust design.
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- LHT Series
- LHT-I Series
- LHT-II Series
- LHT-III Series
- LHT-IV Series
- LHT-V Series
- LHT-3D Series
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