New Product Info
Schaeffler High-performance Tapered Roller Bearings with its FAG Tapered Roller Bearing Series in X-life Quality(Apr 06,2011)
Schaeffler Group Industrial is now offering the world’s widest range of high-performance tapered roller bearings with its FAG tapered roller bearing series in X-life quality. This product range includes sizes previously not available on the market in this premium quality. FAG tapered roller bearings in X-life quality achieve a reduction in frictional torque of up to 75 % compared with conventional standard products. The dynamic load rating, which is the load carrying capacity of the bearing, has been increased by 20 % and thus the basic rating life has been increased by up to 70 %. This means these new tapered roller bearings provide a significant improvement in energy efficiency. They can also be used for improving performance and therefore for downsizing, which offers further advantages in terms of design envelope, mass, and friction. Furthermore, they make a considerable contribution towards reducing outlay and operating, servicing and maintenance costs when considering the total cost of ownership (TCO). Schaeffler Group Industrial is presenting these new X-life tapered roller bearing series at the Hannover Messe 2011 for the first time (hall 22, booth A12).
Particular attention was paid during the further development of this bearing type to the highest-possible level of reliability and minimal friction in applications that place high demands in terms of load and accuracy. Thus, manufacturers of hydraulic units or gearboxes (pinion bearing supports) such as those found in wind turbines, agricultural and construction machinery or stationary machines can now surpass previous performance limits and significantly improve operational safety at the same time. These new X-life tapered roller bearings are currently available in sizes with an outside diameter of up to 635 mm. Bearing sizes of 1600 mm and above will be available at the end of 2011. The majority of applications are covered by this range of sizes. Bearing types for wind turbine gearboxes and rotor bearing supports in particular are incorporated into this portfolio that will offer X-life products in future that set the benchmark in the sector in terms of performance capacity, operating life and friction.
(The frictional torque of the new X-life tapered roller bearings has been reduced by up to 75 % compared with conventional products.)
The geometry, surfaces, materials and dimensional and running accuracy of these new X-life tapered roller bearings has been revised. This has resulted in an increase in basic dynamic load ratings of up to 20 percent and thus the basic rating life of around 70 percent. The alloy of the premium material, which has been specially adapted to meet the requirements of the rolling bearings, is an important factor for these increases. The fine grain of the structure of this material leads to high toughness and therefore to high resistance to solid particles. In addition, a logarithmic profile was developed for the raceways and the outside surface of the rollers, which compensates stress peaks under high loads and any skewing that may occur. An elasto-hydrodynamic lubricant film is formed even at very low speeds due to the optimized surfaces. This enables the bearings to be subject to high loads from the very beginning of operation. Furthermore, significantly reduced dimensional and geometrical tolerances ensure optimum load distribution. Stress peaks are therefore avoided, which reduces material loading.
The frictional torque of the new X-life tapered roller bearings has been reduced by up to 75 % compared with conventional products. This is due to high dimensional and running accuracy in conjunction with an improved surface topography. The additionally revised contact geometry of inner ring rib and roller end face also has lower friction characteristics. The new X-life tapered roller bearings are therefore not only considerably more economical. The operating temperature in the bearing is also lower, which in turn, places significantly less strain on the lubricant. This enables maintenance intervals to be extended and the tapered roller bearings operate with significantly less noise.
(Amongst others, FAG tapered roller bearings in X-life quality are used in hydraulic units, for example in tractors and construction machinery. The improved characteristics of these bearings mean the performance of the gearbox is improved while the design envelope remains the same.)
Schaeffler Group Industrial is now offering the world’s widest range of high-performance tapered roller bearings with its FAG tapered roller bearing series in X-life quality. This product range includes sizes previously not available on the market in this premium quality. FAG tapered roller bearings in X-life quality achieve a reduction in frictional torque of up to 75 % compared with conventional standard products. The dynamic load rating, which is the load carrying capacity of the bearing, has been increased by 20 % and thus the basic rating life has been increased by up to 70 %. This means these new tapered roller bearings provide a significant improvement in energy efficiency. They can also be used for improving performance and therefore for downsizing, which offers further advantages in terms of design envelope, mass, and friction. Furthermore, they make a considerable contribution towards reducing outlay and operating, servicing and maintenance costs when considering the total cost of ownership (TCO). Schaeffler Group Industrial is presenting these new X-life tapered roller bearing series at the Hannover Messe 2011 for the first time (hall 22, booth A12).
Particular attention was paid during the further development of this bearing type to the highest-possible level of reliability and minimal friction in applications that place high demands in terms of load and accuracy. Thus, manufacturers of hydraulic units or gearboxes (pinion bearing supports) such as those found in wind turbines, agricultural and construction machinery or stationary machines can now surpass previous performance limits and significantly improve operational safety at the same time. These new X-life tapered roller bearings are currently available in sizes with an outside diameter of up to 635 mm. Bearing sizes of 1600 mm and above will be available at the end of 2011. The majority of applications are covered by this range of sizes. Bearing types for wind turbine gearboxes and rotor bearing supports in particular are incorporated into this portfolio that will offer X-life products in future that set the benchmark in the sector in terms of performance capacity, operating life and friction.
(The frictional torque of the new X-life tapered roller bearings has been reduced by up to 75 % compared with conventional products.)
The geometry, surfaces, materials and dimensional and running accuracy of these new X-life tapered roller bearings has been revised. This has resulted in an increase in basic dynamic load ratings of up to 20 percent and thus the basic rating life of around 70 percent. The alloy of the premium material, which has been specially adapted to meet the requirements of the rolling bearings, is an important factor for these increases. The fine grain of the structure of this material leads to high toughness and therefore to high resistance to solid particles. In addition, a logarithmic profile was developed for the raceways and the outside surface of the rollers, which compensates stress peaks under high loads and any skewing that may occur. An elasto-hydrodynamic lubricant film is formed even at very low speeds due to the optimized surfaces. This enables the bearings to be subject to high loads from the very beginning of operation. Furthermore, significantly reduced dimensional and geometrical tolerances ensure optimum load distribution. Stress peaks are therefore avoided, which reduces material loading.
The frictional torque of the new X-life tapered roller bearings has been reduced by up to 75 % compared with conventional products. This is due to high dimensional and running accuracy in conjunction with an improved surface topography. The additionally revised contact geometry of inner ring rib and roller end face also has lower friction characteristics. The new X-life tapered roller bearings are therefore not only considerably more economical. The operating temperature in the bearing is also lower, which in turn, places significantly less strain on the lubricant. This enables maintenance intervals to be extended and the tapered roller bearings operate with significantly less noise.
(Amongst others, FAG tapered roller bearings in X-life quality are used in hydraulic units, for example in tractors and construction machinery. The improved characteristics of these bearings mean the performance of the gearbox is improved while the design envelope remains the same.)
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