Pumps and Compressors are used in a wide range of process industries where requirements are for bearings offering long life in order to increase Mean Time Between Failures (MTBF). Downtime in production processes leads to huge costs and loss of productivity. At the same time, Pump and Compressor manufacturers are looking for more compact machines leading to downsizing of bearings.

The combination of increased life time and downsizing places increasingly severe demands on ball and roller bearings; and satisfying those needs call for bearings of the highest quality and reliability.

NSK-HPS Angular Contact Ball Bearings

Centrifugal pump in a waste water treatment plant – Angular contact ball bearings are widely used in centrifugal pumps and screw compressors. OEMs – Original Equipment Manufacturers are looking for more compact design of their machines leading to increasing load conditions for the bearings. The answer to this is the new HPS Series of angular contact ball bearings.

Continually developing products with greater strength and higher accuracy, NSK introduces HPS (High Performance Standard) angular contact ball bearings. These bearings fully incorporate the advantages of NSK’s world-class design, materials, and manufacturing technology, setting a new standard for bearings. This allows premium performance in each feature you can expect from an angular contact ball bearing: high speed, high load capacity, excellent running accuracy, and high reliability.

Special features of the new NSK-HPS Angular Contact Ball Bearings

› High load capacity: 5% increase compared to previous series. Thanks to improved steel cleanliness, optimum internal design and manufacturing process, NSK HPS bearings achieve higher load ratings resulting in an extended life time (up to 18%) or the possibility to downsize.

› High rotating speed: Between 15 and 20% more than conventional series. Permissible speed has been increased by 15-20%, due to internal design, precise processing and manufacturing technology.

› High precision: Improved dimensional and running accuracy. New HPS series are manufactured with P5 (ISO Class 5) running accuracy, and P6 (ISO Class 6) dimensional accuracy.

› Universal matching: In standard, every HPS bearing is manufactured with universal design to be mounted in a pair, triplex or quad set.

› Tight axial clearance/preload tolerance: From 8 to 12 μm enabling precise shaft positioning

› Three high performance cages available
T85: Polyamide 4-6, for general purpose applications
T7: L-PPS (Linear Poly-Phenylene Sulphide), for oil-injected screw compressors
MR: Machined brass (ball guided) for high reliability applications (including API pumps)

 

Source: NSK Ltd – nsk.com