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New X-life single row tapered roller bearings

enable more compact pump and transmission designs.
Improvements in the geometry, surfaces and materials, Schaeffler's new X-life single row tapered roller bearings are quieter, operate at lower temperatures and offer up to 70% longer rating life.

Ideal for lifting gear, conveying systems, hydraulic pumps, vehicle transmission systems, static gearboxes and wheel bearing arrangements, Schaeffler's new premium grade, X-life single row FAG T7FC tapered roller bearings, offer a higher performing bearing with unchanged dimensions. The basic dynamic load rating of the bearings have been increased by up to 20%, and the basic rating life by up to 70%.

For some applications, where loads are unchanged, customers can use smaller and therefore more cost-effective bearing sizes. Customers will now be able to design more compact transmissions or pumps, with extremely reliable bearings.

The new X-life T7FC single row tapered roller bearings use through-hardened premium material (rather than case hardened), which gives higher resistance to solid particles. In addition, Schaeffler has modified the logarithmic profile of the raceways and the outside surface of the rollers, which compensates for stress peaks under high loads and any possible misalignment.

Due to the optimised surfaces, an elasto-hydrodynamic lubricant film builds up even at very low speeds. This enables higher loads on the bearing immediately after start up. In addition, significantly reduced dimensional and running tolerances ensure optimum load distribution. Therefore, stress peaks are avoided and material loading is reduced.

Higher dimensional and running accuracies, in combination with improved surface topography, reduce friction and heat to a considerable degree. The improved contact geometry of the inner ring ribs and roller end faces also reduces friction, resulting in less strain on the lubricant inside the bearing. This means maintenance intervals can be extended. The bearings run significantly quieter than conventional bearings.

Schaeffler's X-life single row tapered roller bearings offer high radial and axial load carrying capacity, high rigidity and ease of fitting. The bearings comprise solid inner and outer rings with tapered raceways and tapered rollers, with cages made from pressed sheet steel. The inner ring, together with the cage and rollers, can be fitted separately from the outer ring.

Bore diameters for the X-life bearings are between 45mm and 95mm and the bearings can be used at operating temperatures between –30°C up to 120°C.

Tel: 0121 351 3833.

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