EWA25-2 Series Slewing Drive

Slew drives are compact with a high power density compared to other gearbox solutions and are the solution of choice for space-saving applications such as robotics, automation, etc. The load-carrying capability versus geometric size is greatly influenced by design. Single row raceways occupy the lower regions of the performance curve, while double row and cross roller raceways offer significantly higher performance. Gear design is critical as this affects the torque carrying capability and the drive's overall operating and rotational smoothness.Safety features can be built into most slew drives and are mandatory for specific applications where a driver must be 'locked' or must not rotate when power is not being applied to the drive. This locking characteristic can be achieved either through a high gear ratio (low efficiency) which results in a so-called self-locking drive, or an add-on brake. Brakes come in two forms:  permanent or spring-loaded, hydraulic release. As the name suggests, permanent brakes are always 'on' and decrease system efficiency, resulting in a self-locking drive. Spring-loaded, hydraulic release brakes allow much more control over the drive system with braking 'on' when there is a 'no power' condition or a loss of power. Subsequently, the brake is released when force is applied.As mentioned, slew drives utilizing spur gears are generally used for high-speed, low torque applications where the application requires the driving motor and slew drive to have parallel axes of rotation. These can be driven directly by a motor or a planetary gearbox, depending on the torque and speed requirements of the application. High torque spur gear slew drives can achieve torque values rivaling worm gear slew drives through multiple pinion inputs. However, this does result in a much higher cost but still maintains the benefits of a spur gear system.

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
58 kN.m	310 kN.m	275 kN.m	2400 KN	950 KN	108:1	<= 0.13 °	270Kg
42800 Lbf.ft	229000 Lbf.ft	203000 Lbf.ft	539500 Lbf	213600 Lbf

Typical Case of Slewing Drive

Slewing products can be found in many applications, including:

• Construction equipment.
• Renewable energy solar trackers and wind turbines.
• Turntables and welding positioners.
• Packing and packaging equipment.
• Assembly lines.
• Aerial platforms.
• Vacuum Trucks.
• Public transportation.

Many of these applications are OEMs. Slew drives for OEMs can be customized to fit these high-volume OEM applications.

Custom Slewing Drives

We can provide custom solutions for specific applications as a global slew drive and slewing 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.