EWA19 Series Slewing Drive

Slewing drive is a gearbox that can safely bear radial and axial loads and transmit rotational torque. The rotation can be a single axis or multiple axes. The slew drive is made by manufacturing gears, bearings, seals, housings, motors, and other auxiliary components and assembling them into the final gearbox. Due to its wide range of uses, slew drives have various models, performance ranges, and installation characteristics.

Features of EWA19 Series Slew Drive

The closed design makes the EWA19 series resistant to wind, rain, and other harsh environments. Here are some ideal solutions to match the relative rotation of two objects' applications: EWA19 series slew drives can be used in indoor and outdoor applications, including but not limited to truck cranes, satellite antennas, solar trackers, wind generators, various utility equipment, and car lifts.

Performance Parameters

Front View	Top View

Functions of Slewing Drive

Slewing drives work best for applications in which high torque can create precision positioning and rotational accuracy—this design results in a device that works smoothly and powerfully with minimal backlash.

Because of the power and dependability generated by slewing drive technology, the functions of this engineering technology apply to many types of equipment. One particular use, for example, involves solar technology, tracking the sun's movements in perfect time to generate maximum energy output.

Any job requiring high load capacity and reliable positioning may require the implementation of slewing drive engineering.

How to Install Slewing Drive?

(1) Installation and maintenance

①Installation preparation: check whether the slewing drive is physically damaged; Clean slewing drive and connecting bracket; Clean the supporting surface of impurities (such as scrap iron, burr, paint, welding slag, etc. ).

②Please clean the anti-rust oil on the slewing drive mounting surface according to the following instructions: clean the exterior of the slewing drive mounting surface with cleaning liquid (such as diesel, gasoline, etc. ). The cleaning liquid shall not damage the performance of the rubber seals; Please follow the rules for the use of cleaning fluid (e. g., manufacturer's directions, worker protection, environmental protection, etc. ).

③The positioning bolts should not be loose during installation, and the facility can be carried out after the bolts are removed. Assembly bolts are not recommended and provided. The following terms are for reference only. Please correctly select bolt specification, type, and performance grade; Bolt level is not lower than 10. 9, bolt screw hole length is generally two times the nominal diameter of the bolt; Do not screw the bolt out of the hole. Otherwise, it will interfere with and damage the machine. If not, it may affect the rotary reducer bolt connection's performance, service life, and tensile strength. If the contact stress of the allowable mounting surface is exceeded, use an appropriate high-strength washer; Bolts are only for shipping bolts when they leave the factory. Remove them when they are installed.

④Tightening torque recommendation: installation bolts should be fixed by the correct preloading load. Do not use a broken pad, flat pad, etc. Tightening the torque table of mounting bolts is for reference only.

⑤Slewing drive installation: clean the bracket, remove welding slag, galvanized residue, etc.; Bolt the frame to the slewing drive. The bolt head shall be provided with a flat washer and a spring washer. Slewing drive should be installed without load. Please follow the following procedures to avoid internal stress and installation problems during bolt tightening. Add thread fastening glue to the thread; Pre-tightening bolts and washers shall be cross-tightened; See the following figure for tightening order of bolts; Starting from the inside or outside the ring, tighten all bolts to 30% tightening torque, then repeat the diagonal tightening to 50% tightening torque, and finally to 100% tightening torque. All the mounting bolts should be mounted without missing them. In case of structural restriction, the bolt hole must be sealed. If the bolt hole is filled with silicone, it will leak and dust into the slewing drive. The installation bolt should consider the thread meshing length; it should not be too long. Otherwise, it affects the rotation of the slewing support or causes interference; After the bolt is tightened, mark the bolt head and its connection with a line to check whether the bolt is loose later. Refinish during slewing drive installation. Inevitably will cause surface paint bump damage, so the system, after the completion of the final assembly, is necessary to carry out paint repair to the rotary reducer, to improve the ability of rust and corrosion prevention.

Custom Slewing Drives

Our company specializes in producing various kinds of slewing drives, providing high-quality and inexpensive slewing drives, professional technical guidance, and considerate after-sales service. If you need slewing drive, please get in touch with us.