RNA4909 Needle Roller Bearing 52x68x22mm

Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable 

Slewing Bearings. Rotek is the North American manufacturing leader of slewing bearings. Rotek slewing bearings are machine elements which absorb all axial and radial forces and the resulting tilting moments in a single self-retaining and ready-to-install unit

A slewing bearing or slew[ing] ring is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill

Products. Liebherr manufactures customer and application specific large diameter bearing slewing rings. Depending on given requirements, various sizes and 

Slewing Ring Bearings - Components (Turntable Bearings). Inner Ring and Outer Ring; Rolling Elements; Spacers, Spacer Balls & Separators. Mounting Holes 

ISB slewing bearings are necessary when in a given machine or system, one structural part needs to rotate in the opposite direction to another along a fixed axis 

Shop our large selection of maintenance-free, self-lubricating slewing rings & slewing ring bearings, manufactured from high-strength plastic

Kaydon Bearings: slewing ring/turntable bearings and pinions. Four point contact, eight point contact, cross roller, three row roller

28 products - Slewing rings may be small, but they power some of the toughest machines in the industry. Shop Grainger's selection of slewing rings for your