SELF-LUBE®
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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.

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...

Self-Lube® Bearings Content Self-Lube® ›› Matrix ›› Part numbering system ›› Technical information common to all ranges ›› Load ratios ›› Technical specification ›› Bearing tables ›› Additional Products Silver-Lube® ›› Matrix ›› Part numbering system ›› Bearing tables Molded-Oil – Stainless steel units ›› Matrix ›› Part numbering system ›› Technical specification ›› Bearing tables Life-Lube® (Molded-Oil Inserts in Silver-Lube® Housings) ›› Matrix ›› Part numbering system ›› Technical specification ›› Bearing tables Special Products and Bearing Solutions ›› Additional Products ›› HLT...

Self-Lube® General Technical Specification

Standard unit references SNP-DEC CNP-DEC SF-DEC SNP-EC CNP-EC SF-EC LPB-DEC LPBR-DEC LPB-A LPBR-A LPB-EC LPBR-EC

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

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...

Self-Lube® product range 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. They are basically deep-groove...

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....

Examples of bearing calculations 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...

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)

Self-Lube® product range 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,...

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...