EWA14-2 Series Slewing Drive

• Hour-glass worm for competitive gear contact and life and static load capacity
• Multiple precision levels: variable backlash for customizable positioning accuracy
• 13 distinct size offerings, up to 25″ bearing diameter
• Standard sealing and grease fill
• Ideal for dust and debris-prone environments
• Commonly customized
• Critical applications: Drilling Machinery, Precision Positioning

Performance Parameters

Front View	Top View

Double Worm Slewing Drive Application:

1. Heavy duty flat transport truck

Compared with the single worm slewing drive, the double wormslewing driveis more suitable for the steering device of the heavy cargo heavy haul truck with more significant tonnage. It has been proved that when the single worm slewing drive is used in heavy equipment with large cargo, it will produce jitter and noise. The casing is distorted, and even the worm is broken. Therefore, this particular slewing drive has become a favorite product for the designers of heavy equipment.

2. Heavy lifting and aerial work area.

Adaptability to harsh working conditions and use conditions, especially in heavy lifting and heavy-duty aerial work, the double-row rotary drive is matched with the traditional slewing bearing, which makes the slewing mechanism even more powerful. At the same time, it also provides several times the output torque higher than the conventional design. In the application field, where the load and torque are extremely demanding, the advantage of the single-worm rotary drive is gradually lost, and the double-worm rotary movement meets users' needs.

3. Solar tracking system.

The solar tracking system is an important application field of slewing drive. Solar tracker slew drive as a rotating component can accurately adjust the main engine's rotation angle and elevation angle according to the different sun positions in the day. Comparing the maintenance characteristics of a single worm slewing drive and dual worm axis slewing drive, as well as the increased power generation rate, if the latitude is less than 30 degrees, it is suitable to adopt a single worm slewing drive. If the space is above 35 degrees, it is appropriate to adopt a dual worm axis slewing drive.

4. Heavy-duty door lifting equipment use slewing drive.

5. Rotary table and mixer field use slewing drive.

6. Port mobile crane use slewing drive.

Custom Slewing Drives

HZPT provides its customers with a high-quality application-based slew drive product line. Sizes range from 7.5" (200mm) up to 20" (500mm) in ID. Standard hydraulic or electric motors rotate the drive-through standard worm shaft inputs and can be assembled upon customer request, depending on their application.

Our engineers are well equipped with the tools and technology necessary to work alongside our customers. We work to understand their applications, design requirements, project scope, and loads and help identify the most suitable products. We are ready to provide technical support and slew drive recommendations based on application requirements.

For over three decades, slewing rings and slew drives have proven their worth in the most varied application areas. We've been supplying products to many of our customers for decades. We'd love to have the opportunity to win you over with our technological competence, too!