EWA17-2 Series Slewing Drive

Double worm slewing drive is a brand new slewing drive product consisting of the outer casing, worm gear ferrule, worm, motor, and other components. Compared with the single worm rotary drive, the double worm rotary drive still has the characteristics of modularity, safety, and simplified host design. The double worm slewing drive has a more compact structure than the single worm slewing drive. The load capacity is better, and the output torque is far beyond the single worm rotary drive. Double worm rotary drive abandoned in design.The slewing bearing of the core component theoretically forms a double-row space cross-roller slewing bearing through the outer casing and the worm wheel contained therein. The two worms are meshed with the worm wheel to realize the rotation in the case to ensure high realization. At the same time, the bearing capacity is theoretically formed into a double-row space cross-roller type slewing bearing through the outer casing and the worm wheel contained therein. The two worms are meshed with the worm wheel to realize the rotation in the case to ensure high carrying capacity.

Performance Parameters

Front View	Top View

 

Output torque	Tilting moment torque	Holding torque	Axial load	Radial load	Ratio	Backlash	Weight
输出转矩	倾覆力矩	保持力矩	轴向承载力	径向承载力	速比	精度	重量
19.44 kN.m	142.4 kN.m	110 kN.m	1166 KN	435 KN	104:1	<= 0.15 °	115Kg
14347 Lbf.ft	105000 Lbf.ft	81200 Lbf.ft	262000 Lbf	97800 Lbf

Advantages Compared To Single Worm Slewing Drives:

• The double worm slewing drive still has the characteristics of modularization, safety, and simplified host design.
• Unlike the single worm, under the premise of the exact external dimensions, the double worm rotary drive has a more compact structure, better load capacity, and output torque far exceeds that of the single worm rotary drive.
• The double worm slewing drive abandons the core component slewing bearing in design and forms a double-row space cross-roller type slewing bearing through the outer casing and the worm gear contained within it and meshes with the worm gear through two worms in the case. To achieve rotation, to ensure that while earning higher bearing capacity, it can also generate higher output torque.

Application Fields of Double Worm Slewing Drive

1. Compared with the single worm slewing drive, the double worm slewing drive is more suitable for the steering device of the heavy-duty flatbed transporter. The practice has proved that when the single worm slewing drive is used for heavy equipment with a more significant cargo, it will produce jitter, noise, casing distortion, and even worm breakage. Therefore, this particular rotary drive has become a supporting product favored by most heavy equipment designers.2. Heavy lifting and aerial workIn the application field with extremely high demands on load and torque, the advantages of single worm slewing drive are gradually lost. Double worm slewing drive caters to the needs of the majority of users and has extreme adaptability to harsh working conditions and use conditions, especially In the field of heavy lifting and heavy-duty aerial work; the double worm slewing drive is used together with the traditional slewing bearing, which makes the slewing mechanism even more powerful—at the same time, obtaining a more significant reduction ratio and providing an output torque several times higher than the traditional design.3. Heavy gantry lifting equipmentMost traditional gantry cranes are rail-moving types, which can only move linearly and parallelly on limited rails. Currently, some companies that pay more attention to technological innovation have gradually realized that breaking the traditional design concept of gantry lifting equipment is imperative. The double worm slewing drive is selected as the gantry hoisting equipment for the steering system. Compared with the previous design, the required hoisting equipment per unit operating area is reduced by 75%. While reducing operating and maintenance costs, The work efficiency has also been greatly improved.4. Rotary table and mixing machinery fieldTaking the concrete mixing machine as an example, while realizing the rotary mixing, the steering equipment is often required to provide more significant output torque. The double worm slewing drive is selected, simplifying the main engine's design and the slewing mechanism while achieving an enormous output torque. The high assembly accuracy of the double worm rotary drive (mainly the backlash of the worm gear pair) is also one of the reasons why many users use the product for the worktable steering gear of large-scale high-precision equipment.Safety and strength of slew drives.

Custom Slewing Drives

We can provide custom solutions for specific applications as a global slew drive and slew bearing manufacturer. We have a long and proud engineering history starting in 1925 and have worked at the cutting edge of slew drive technology ever since.

Benefits of our slew drive technology

— Long-life performance.— Smooth rotation.— Slew bearing protection.

Why Choose Us As Your Slew Drive Manufacturers?

— We provide custom slewing drive solutions.— We can provide on-site slew drive gearbox installation.— All of our slew drive gearboxes come with dedicated engineering support.