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Schaeffler Extended and Improved Track rollers
The Schaeffler group has extended and improved its range of yoke and stud type track roller bearings with a new premium X-life range.
By optimising the raceway geometry and outer ring material on its range of X-life yoke and stud type track rollers, Schaeffler has increased the basic rating life by up to 30% and improved load carrying capacities by up to 50%. The Schaeffler group has extended and improved its range of yoke and stud type track roller bearings with a new premium X-life range, which offers a host of technical benefits.
By modifying the material of the outer ring and by optimising the geometry of the raceways, the new X-life PWTR and PWKR yoke and stud type track rollers now offer up to 50% higher load carrying capacities and up to 30% longer basic life ratings.
In addition, the optimised lateral surface profile and the improved surface quality of the outer ring mean there is reduced overall stress on the mating track.This provides a highly robust bearing support with an extended service life and higher efficiency for the customer's application.
By optimising the raceway geometry, Schaeffler has increased the effective load carrying length of the rolling element.Even at high loads, edge stresses are prevented.This leads to increased effective dynamic load ratings (by up to 9%) and increased effective static load ratings (by up to 30%).The basic rating life is therefore up to 30% higher with the new range.The outer ring material was modified from case-hardened steel to through-hardened steel.
Increased fatigue strength under reversed bending stress therefore leads to higher permitted dynamic ring load (by up to 50%).Increased proof stress leads to higher permitted static ring load (by up to 30%).The quality of the outside surface of the outer ring track is also improved by around 40%, giving increased protection of the mating track.X-life yoke and stud type track rollers are based on double-row cylindrical roller bearings and are fitted with lip seals to protect them against contamination.by a central rib, the cylindrical rollers provide axial guidance of the outer ring.Stud type track rollers are equipped with a hexagonal socket on both sides of the roller stud.
Customers can also request all-round corrosion protection in the form of Schaeffler's chromium-free Corrotect anti-corrosion coating, or with a special Triondur coating for high-level anti-wear protection.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| GE14PB bearing | 14 | 28 | 19 |
| GE12PB bearing | 12 | 26 | 16 |