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SLEWING RINGS
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Slewing Rings UK A slewing ring is a solution that enables rotational motion between components, using two concentric rings as the main structure. These slewing bearings are made up of an inner and an outer ring, one of which will generally incorporate a gear whilst both elements include att.. Read More
Slewing Rings UK
A slewing ring is a solution that enables rotational motion between components, using two concentric rings as the main structure. These slewing bearings are made up of an inner and an outer ring, one of which will generally incorporate a gear whilst both elements include attachment holes. This enables optimised power transmission with a simple and fast connection between adjacent components.
They are designed to transmit axial, radial, and tilting moment loads in one assembly, greatly reducing space, weight and the high costs of investing in other rotational designs. The bearing raceways, in combination with the rolling elements and cages or spacers, can accommodate loads acting individually or in combination, as well as in any direction.
Slewing rings can have multiple different names. They might also be known as turntable bearings and slewing bearings, terms which can be used interchangeably to refer to the same products. These bearings can be made from many different materials including carbon steel, stainless steel, chrome steel, brass, anodised aluminium and plastic. Slewing rings that use plastic can be beneficial because they are electrically insulated, so additional grounding is not needed. When slewing rings use a ball bearing design, additional consideration needs to be given to insulation and an extra polymer layer may be needed.
They come in various sizes to accommodate different applications, though they tend to be used with heavy loads – the slewing bearings themselves might range from small components up to a few metres in size. They can be used in packaging, robotics, wind power, drilling, mining and lifting.
Slewing rings vary considerably depending on size and the bolt-hole pattern. Their construction consists of the following components:
- An internal or external gear
- Ball or crossed roller bearing design
- Single or double rows
- Lubrication holes
While these components should all be of high quality, their success depends largely on how the system is driven. Different options for driving include external gears or worm gears, drive plate coupling, or external belts. Here are some of the most common types of slewing ring bearings, which are available to purchase from our large online range:
SINGLE ROW
With a row of steel balls as the body, the balls are separated by an isolation block. The inner and outer rings are critical and the steel balls are loaded by plugging holes, meaning the steel ball is in contact with the rolling path at four points bearing axial force, radial force and tipping movement all at the same time.
DOUBLE ROW
This is much like the single-row contact ball slewing bearing but with two rows of steel balls as the rolling body. All of the balls are the same size, whilst the inner and outer rings are integral once more.
TRIPLE ROW
Composed of three rings, the upper and lower rows are distributed horizontally to endure the axial force and tipping moment (both ways). The radial force is therefore tolerated by the third row of vertically arranged rollers.
CROSS ROLLER
With this design, the rolling bodies are cylindrical rollers and the axes of adjacent rollers are arranged in a 90° cross arrangement. Half of the rollers bear the downward axial force, and half tolerate the upward axial force.
DOUBLE EXCLUSION BALL
With upper and lower double rows of steel balls, the double exclusion ball bearing features inner and outer rings, isolation blocks and lubricating devices.
At Bearing Revolution, we have a wide range of slewing rings in stock and ready for dispatch. We do not list all products online, so please call us if you cannot find what you're looking for as we are likely to have it in stock. Our range includes:
Slewing rings carry large axial, radial, and moment loads within a compact dimension envelope. They are widely used in industrial machines, providing an elegant solution for load carrying, stability, and power transmission. We also offer equivalents to other renowned brands such as Torriani Gianni, La Leonessa, BRB Technologies, and more.
If you need assistance in identifying the specific slewing ring you require, please contact Bearing Revolution, and our team will be happy to guide you
