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Customized Size Worm Gear Slewing Drive Gearbox For PV Trackers
Worm Gear Slewing Drive Description
There are many types of slew drives, which can be selected taking
into account the following factors.
1. Load capacity, direction and properties: The slew drive is
suitable for bearing light loads, and roller bearings are suitable
for heavy loads and impact loads. When the rolling bearing is
subject to pure axial load, the thrust bearing is generally
selected, and when the rolling bearing is subject to pure radial
load, the deep groove ball bearing or short cylindrical roller
bearing is generally selected, and when the rotary device is
exposed to pure radial load, there is also a small axial load, you
can choose deep groove ball bearing, angular contact ball bearing,
tapered roller bearings and centering balls or centering roller
bearings. When the axial load is large, the contact angle of the
angular contact ball bearings and tapered roller bearings can be
selected, or the use of centripetal bearings and thrust bearings
combined, which is particularly suitable for extremely high axial
loads or special requirements with large axial rigidity.
2. Allowed speed: For different driver types of slew drives, in
general, bearings with small friction and low heating capacity are
suitable for high speeds. The design should strive for rotary
rolling bearings to work under conditions below their ultimate
rotational speed.
3. Rigidity: When the bearings of the slew drive unit bear the
load, the bearing ring and the contact place of the rolling body
will produce elastic deformation, the deformation amount is
proportional to the load, and its ratio determines the bearing
rigidity size. The rigidity of the bearing can generally be
improved by the pre-tightening of the bearing. In addition, in the
bearing support design, considering the combination and arrangement
of bearings can also improve the bearing support stiffness.
4. Tuning performance and installation error: After the bearing is
loaded into the working position, poor installation and positioning
will be caused by manufacturing errors. At this time, due to the
shaft fishing and thermal expansion and other reasons, the bearing
bear too much load, causing early damage. Automatic centering
bearings can overcome defects caused by installation errors on
their own and are therefore suitable for such uses.
5. Slew drive installation and disassembly: tapered roller
bearings, roller bearings and tapered roller bearings, etc., belong
to the inner and outer ring can be separated bearing types (that
is, so-called separated bearings), easy to install and disassemble.
Performance Parameters of SE14
Model | horizontal 14 inch worm drive |
Ratio | 85:1 |
IP Grade | IP66 |
Rated Output Torque | 44 kNm |
Tilting Torque | 135 kNm |
Axial Load | 680 kN |
Radial Load | 230 kN |
Holding Torque | 68 kNm |
Efficiency | 40% |
Precision | ≤0.1 ° |
Self-locking | Yes |
Weight | 62 kg |
Working Temperature | -30~+120 ℃ |
Application
Typical applications include solar trackers, wind turbines,
satellite and radar dishes, truck cranes, man lifts, utility
equipment, hydraulic equipment attachments, oil tool equipment,
tire handlers, digger s, and automotive lifts.