Thin Turntable Bearings

Thin section turntable bearings can optimize space, lower the overall weight of your designs and dramatically reduce friction. They can even help you achieve greater reliability and performance.

Rugged ball-bearing slewing rings are designed for radial, axial and combined axial and radial loads. They're available in geared or non-geared versions.

X-Type Turntable Bearings

The X-Type or 4-Point Contact Bearing is ideal for moment loading. Designed with gothic arch raceways creating four contact points between balls and raceways, the X-Type can also handle reversing axial loads. It is not recommended in place of a C-Type or A-Type bearing for heavy radial load applications.

The standard slewing bearing selector provides load charts for various sizes of Kaydon RBC thin section ball bearings. Load ratings are based on limiting speeds calculated for unlubricated or sealed bearings at temperatures of up to 250°F. For higher temperatures, alternate mounting fits, special lubricants or other design changes may be necessary to achieve adequate limiting speeds.

To ensure a proper fit of the thin turntable bearings to your equipment, test the bolt tensioning method to verify that the desired results are achieved prior to the start of operations. For additional help in determining the best slewing bearing for your application, please contact your RBC sales engineer.

X-Type X-Ring

The X-shaped design of an X-ring offers many benefits that O rings do not. In dynamic applications, X-rings provide stability that can counteract spiral twisting and other effects of repetitive movement. The four ends of the X-shaped structure also create more surface areas to seal in lubricant, which helps to reduce friction and wear.

Unlike the O-ring, which is compressed in the groove to seal, an X-ring can rotate with the shaft to maintain sealing capability. This feature allows X-rings to handle higher speeds and increased pressure with greater reliability than O-rings.

If you’re in the market for a sealed drive chain, consider DID’s 520VX2 Gold X-ring chain. It’s a durable chain that won’t cost you in terms of power loss due to friction and lasts twice as long as an O-ring chain. This is because X-rings prevent abrasion between the inner and outer plates and keep grease in place to reduce friction. It also features a high average tensile strength that’s perfect for large-capacity bikes.

X-Ring X-Sleeve

Quadrilobe seals, also known as X-rings, are four-lobe double-acting seals that offer better stability than an O-ring when inserted into a groove. They can be used in static and dynamic applications, and are available in NBR, FKM, EPDM, and VMQ materials. They are suitable for use in contact with oils, hydrocarbons, and water from -40 degC to +110 degC. X-rings are available in a variety of inside diameters and sections (thicknesses). They can be used for both radial and axial loads, but are best for axial load because they disperse the pressure over the entire surface, minimizing power loss. RIKS offers a wide range of quadrilobe seals for various applications.

X-Sleeve X-Ring

X-rings, also known as quadrilobe seals, are double-action seals that can be used for both static and dynamic applications. They resemble O-rings in size and design but have four lobes instead of two, allowing them to achieve lower friction than O-rings.

Compared to O-rings, X-rings offer higher stability for dynamic applications and are less susceptible to rolling within the groove (twisting). They can also hold lubricant in the groove and provide a wider sealing surface.

X-Rings are commonly made from EPDM, NBR, FKM or VMQ and are typically installed by hand. They can be inserted into a radial or axial installation groove, and once in place, the system pressure will create a seal. This type of seal is commonly found on hydraulic and pneumatic rod seals, piston seals, rotary shaft seals, and flange seals. The X-Ring rail mount can be positioned anywhere on the rifle's Picatinny rail and is simple to position, stays in place under recoil, and folds up when not in use.