BALL BEARING UNITS
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BALL BEARING UNITS

As one of the world’s leading manufacturers of rolling bearings, linear technology components and steering systems, we can be found on almost every continent – with production facilities, sales offices and technology centres – because our customers appreciate short decision-making channels, prompt deliveries and local service. Trademarks within this catalogue All NSK product and service names listed within this catalogue are trademarks or registered trademarks of NSK L

Partnership based on trust – and trust based on quality Total Quality by NSK: The synergies of our global network of NSK Technology Centres. Just one example of how we meet our requirements for high quality. NSK is one of the leading companies with a long tradition in patent applications for machine parts. In our worldwide research centres, we not only concentrate on the development of new technologies, but also on the continual improvement of quality based on the integrated technology platform of tribology, material technology, analysis and mechatronics. More about NSK at www.nskeurope.com...

Ball Bearing Units Content Self-Lube Bearings J-Line Bearing Units

Self-Lube Bearings Content Self-Lube 5 ›› Matrix 6 ›› Part numbering system 8 9 ›› Technical information common to all ranges 12 ›› Load ratios 13 ›› Technical specification ›› Bearing tables 21 92 ›› Additional products Silver-Lube 95 ›› Matrix 96 96 ›› Part numbering system 102 ›› Bearing tables Molded-Oil – Stainless steel units 111 ›› Matrix 112 112 ›› Part numbering system ›› Technical specification 113 114 ›› Bearing tables 121 Life-Lube (Molded-Oil Inserts in Silver-Lube Housings) ›› Matrix 122 ›› Part numbering system 122 123 ›› Technical specification 126 ›› Bearing tables Special...

SELF-LUBE BEARINGS Self-Lube General Technical Specification

Standard unit references Insert Type SNP-DEC CNP-DEC SF-DEC SNP-EC CNP-EC SF-EC Cast iron one piece LPB-DEC LPBR-DEC LPB-A LPBR-A LPB-EC LPBR-EC Pressed steel two piece

86 TNP TSL TMP TSNP TCNP TSF TMSF TSFT TMSFT 89 NP-FS SL-FS MP-FS SNP-FS CNP-FS SF-FS MSF-FS SFT-FS MSFT-FS TSNP-DEC TCNP-DEC TSF-DEC TSFT-DEC SNP-DECFS CNP-DECFS SF-DECFS SFT-DECFS MFC-FS TST-DEC ST-FS MST-FS TSLC TMSC TSCHB TSCH SLC-FS MSC-FS SCHB-FS SCH-FS SELF-LUBE BEARINGS

Standard Self-Lube insert references Triple lip seal option Blank: Standard lip seal T: Triple lip seal Basic group OD profile 10: Spherical outside diameter 12: Spherical outside diameter - short inner ring 11: Parallel outside diameter 13: Parallel outside diameter short inner ring Bore size 2 Digits: Millimetre sizes Single Digit + fractions: Inch sizes Relubrication Blank: Not re-greaseable G: Re-greaseable Locking Blank: Standard set screw lock DEC: Eccentric collar lock - long inner ring EC: Eccentric collar lock - short inner ring K: Taper sleeve lock List of common prefixes and...

NSK manufactures several ranges of mounted units. These include Self-Lube, our recognised standard, and recently introduced ranges such as Silver-Lube, Life-Lube and Molded-Oil units. In each type, there are two basic components, the insert and the housing. Self-Lube bearing inserts The Self-Lube bearing insert, commonly known as a wide inner ring bearing, is designed to suit the wide range of housings offered by NSK in the Self-Lube bearing family and is also suitable for applications where the user’s own housing is preferred. take-up units, cartridge units and hanger units. Choice is very...

Bearing load ratings and endurance Basic dynamic radial load rating Cr This is defined as the load that can be applied to the bearing to give a basic L10 rating life of one million revolutions. This is the life associated with 90% reliability which has been found by experience to be acceptable for normal engineering bearing applications. The majority of the bearings attain a much longer life and the median life is approximately five times the L10 life. Ratings for each series are given in the bearing tables and are used to calculate life for radial loads of constant magnitude and direction....

Example 1 What nominal life can be obtained from NP55 with a steady radial load Fr = 3900N at speed of 1500 rev/min? The dynamic load rating Cr of the unit from page 23 is 43500N. Since the bearing is not subject to axial load the equivalent load Pr = Fr according to the formula on page 10. Therefore applying the service factor of 1.2 for a steady load. Pr = Fr • 1.2 = 3900 • 1.2 = 4680N. From page 10, L10 life in hours Alternatively, using the loading ratio tables on page 12 an approximate life can be obtained by locating the nearest Cr value in the appropriate rev/min column. Pr From page...

Loading ratios Life estimation for ball bearings for different Cr/Pr ratios and speeds L10 life (hours) Life estimation for ball bearings for different Cr/Pr ratios and speeds L10 life (hours)

Under the heading of Self-Lube bearings there are two basic products: The Self-Lube bearing insert and the Self-Lube bearing unit. Self-Lube bearing unit The range of Self-Lube bearing units offers a wide choice of cast iron, pressed steel or synthetic rubber housings fitted with the full range of spherical outside diameter Self-Lube bearing inserts. They will accommodate initial housing misalignment up to 0.030 radians but are not recommended for running misalignment in excess of 0.001 radians. The general housing types are pillow blocks, flange units, take-up units, cartridge units and...

Relubrication of Self-Lube Bearings NSK Self-Lube Bearings are factory charged with the correct amount of grease and do not require a further grease charge when being fitted. Relubrication is not normally necessary except when operating at extremes of temperature, speed and loading, or where excessive wet or dirty conditions exist. The relubrication frequency varies with the type and quality of grease used as well as the operating conditions. Therefore, it is difficult to establish a general rule, but under ordinary operating conditions, it is desirable that grease be replenished before one...