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Dual Axis Worm Gear Slewing Drive With Enclosed House And Small Backlash For PV Tracker
Description
A slewing drive or slewing bearing is a rotation part that typically supports a heavy but slow-turning load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis solar tracking system. The slewing drive is made up of an envelop worm, gear, house etc. Solar tracker dual axis slew drive is perfect solution in the dual axis solar tracking applications.
Dual axis slew drive have three types solutions with slew drives:
In general, for easy bracket structure, the sde slew drive would be the perfect solution, but the other two are also very popular.
Slew Drives Applied In PV Tracking System
| Product Name | SDE7 Slewing drive |
| Output Torque | 980 N.m ; 723 ft.lbs |
| Max Output Torque | 1938 N.m; 1429 ft.lbs |
| Tilting Moment Torque | 7000 N.m; 5163 ft.lbs |
| Holding Torque | 13200 N.m ; 9736 ft.lbs |
| Static Axial Rating | 133.20 kN ; 29943 lb |
| Static Radial Rating | 53 kN ; 11977 lb |
| Dynamic Axial Rating | 31.90 kN ; 7171 lb |
| Dynamic Radial Rating | 27.91 kN ; 6274 lb |
| Motor Alternatives | 12V/24V Motor ; Stepper Motor ; Brushless Motor |
| Products Style | Dual Axis; Single Axis; CPV/HCPV; Solar Dish; Parabolic; Solar Tower |
| Application Feature | Solar Tracking System, Industrial Machinery |
| Solar System Square Meter | 30 ㎡ |
SDE Performance Parameters
| Model | Ratio | Rated Output Torque(N.m) | Tilting Torque(N.m) | Holding Torque(N.m) | Axial Load(kN) | Radial Load(kN) | Efficiency | Precision(°) | Self-locking | Weight(kg) |
| 3" | 31:1 | 600 | 1500 | 5800 | 10 | 15 | 40% | ≤0.1 | Yes | 25 |
| 5" | 37:1 | 800 | 6000 | 9200 | 16 | 27 | 40% | ≤0.1 | Yes | 34 |
| 7" | 57:1 | 2000 | 7500 | 13200 | 34 | 58 | 40% | ≤0.1 | Yes | 56 |
| 9" | 61:1 | 4300 | 16000 | 27200 | 60 | 130 | 40% | ≤0.1 | Yes | 92 |
| 12" | 78:1 | 5800 | 25000 | 40560 | 77 | 190 | 40% | ≤0.1 | Yes | 160 |
| 14" | 85:1 | 6750 | 48000 | 44200 | 110 | 230 | 40% | ≤0.1 | Yes | 224 |
| 17" | 102:1 | 9460 | 67000 | 53040 | 142 | 390 | 40% | ≤0.1 | Yes | 320 |
| 21" | 125:1 | 16000 | 89000 | 65000 | 337 | 640 | 40% | ≤0.1 | Yes | 492 |
| 25" | 150:1 | 21450 | 112000 | 89000 | 476 | 950 | 40% | ≤0.1 | Yes | 705 |
Features
1. High backholding torque to improve the solar tracking system's safety
2. Enveloping worm drive inside
3. Multi tooth contact to ensure high load
4. Self-lock to improve safety
