Bearings Name	New Model	Old Model:	ID(mm)	OD(mm)	Width(mm)	Cr(kN)	Cor(kN)	Grease Lubrication Speed(r/min)	Oil Lubrication Speed(r/min)	Weight(kg)
Customized external gear slew rings slewing bearing rks22 bearing motor swing pc785 China Factory	014.30.500	-	398	602	80	-	-	-	-	85.000
External Gear Slewing Bearing Tower Crane Slewing Bearings	010.40.1000	-	878	1122	100	-	-	-	-	270.000
slewing ring bearing with external gear, 010.30.710 Slewing bearing	010.30.710	-	608	812	80	-	-	-	-	120.000
Mini Digger Slew Ring External Gear Swing Ball Bearing	010.30.500	-	398	602	80	-	-	-	-	85.000
external gear swing ball bearing mini digger slew ring 020.30.1000 Slewing bearing	020.30.1000	-	858	1142	124	-	-	-	-	300.000
External gear slewing bearing - Heavy Duty Turntable Bearing	014.60.2240	-	2065	2418	144	-	-	-	-	1250.000
Slewing Ring Bearings & External Gear	014.40.800	-	678	922	100	-	-	-	-	220.000

An external gear slew ring bearing, also known as an external gear Slewing Bearing or external ring gear bearing, is a type of rolling element bearing that facilitates rotational movement and supports axial, radial, and moment loads. It consists of an outer ring with external teeth, an inner ring with internal teeth, and rolling elements (such as balls or rollers) that enable smooth rotation. Here are some key aspects of external gear slew ring bearings:

1. Structure: External gear slew ring bearings typically consist of three main components: the outer ring, inner ring, and rolling elements. The outer ring has external teeth around its circumference, while the inner ring has internal teeth that engage with the external teeth. The rolling elements, such as balls or rollers, are positioned between the outer and inner rings to facilitate smooth rotation.

2. Gear Functionality: The external teeth on the outer ring of the bearing serve as a gear, allowing the slew ring bearing to transmit torque and rotation to other components or equipment. This gear functionality is particularly useful in applications that require controlled rotation and the transfer of power.

3. Load Support: External gear slew ring bearings are designed to support axial, radial, and moment loads. They are capable of handling large and complex loads, making them suitable for various applications where heavy loads and rotational movement are involved.

4. Slewing Motion: The primary function of an external gear slew ring bearing is to enable slewing motion, which refers to the rotational movement around a central axis. The bearing allows smooth and controlled slewing motion, facilitating the rotation of equipment or components.

5. Applications: External gear slew ring bearings are commonly used in a wide range of applications, including cranes, excavators, construction machinery, wind turbines, industrial equipment, and robotics. They are particularly suitable for applications that require smooth and controlled rotation, such as in slewing drives and rotary platforms.

6. Design Variations: External gear slew ring bearings are available in various design variations to accommodate different load capacities, sizes, and application requirements. These variations include different gear tooth profiles, material choices, and sealing options.

7. Lubrication and Maintenance: Proper lubrication is crucial for the smooth operation and longevity of external gear slew ring bearings. The bearing should be adequately lubricated to reduce friction, dissipate heat, and protect against wear. Regular maintenance, including inspection and relubrication, is essential to ensure optimal performance and extend the bearing's service life.

When selecting an external gear slew ring bearing, it is important to consider factors such as the load requirements, rotational speed, operating conditions, and the specific application's demands. Working with reputable bearing manufacturers or suppliers with expertise in slewing bearings can help ensure the selection of a bearing that meets the specific requirements and performance expectations for the intended application.