SUPER PRECISION BEARINGS - MACHINE TOOL APPLICATIONS

Product catalog summary

Introduction to NSK and Super Precision Bearings
NSK, founded in 1916, is a prominent manufacturer of rolling bearings, linear technology components, and steering systems. The company prioritizes continuous improvement in products and services, supported by a global network of research and production facilities. Quality optimization is emphasized at every stage, from product design to the development of new materials and lubricants.

Product Range Overview
NSK offers a variety of Super Precision Bearings, including:

Angular Contact Ball Bearings - High-Precision: Manufactured to ISO standards, available in series 70xx, 72xx, 79xx with contact angles of 15˚, 25˚, and 30˚. Cage designs include phenolic or polyamide, with steel or ceramic ball materials.
Angular Contact Ball Bearings - Ultra High-Speed: Designed for high-speed operations with low temperature rise, suitable for ultra-high precision machining. Contact angles of 18˚ and 25˚, with steel or ceramic balls.
Cylindrical Roller Bearings - High-Speed, Double Row: High rigidity for applications like lathe spindles, with brass or PPS resin cages.
Angular Contact Thrust Ball Bearings - High-Speed: High rigidity thrust bearings for lathe applications, with contact angles of 30˚ and 40˚.

Special Series and Applications
NSK provides specialized bearings for unique applications, such as:

Angular Contact Thrust Bearings, High-Duty: Designed for high load capacity and longer life expectancy, suitable for machine tool applications.
Ball Screw Support Bearings - BSBD Series: Double row configuration supports large axial forces, available with or without flange.

Nomenclature and Specifications
NSK bearings are categorized by various specifications, including:

Bore Diameter: Defined by bore code, with dimensions in mm.
Contact Angle: Options include 15˚, 18˚, 25˚, and 30˚.
Material and Cage Design: Options include steel and ceramic balls, with various cage materials like phenolic, polyamide, and PPS resin.
Preload and Accuracy Class: Preload options range from extra light to heavy, with accuracy classes defined by ISO standards.

Conclusion
NSK's Super Precision Bearings are designed to meet the demands of high-speed and high-precision applications across various industries. The company's commitment to quality and innovation ensures that their products remain competitive and reliable.

Specifications and Guidelines
The document provides detailed specifications and guidelines for various types of precision bearings used in machine tool applications. It includes nomenclature, design features, fitting recommendations, and interchange guides for different bearing types.

Design Features

State-of-the-art preload control and high point of eccentricity marking for improved assembly and performance.
Universal bearings allow for various angular contact ball bearing arrangements.

Fitting Recommendations

Guidelines for fitting bearings on shafts and housings, emphasizing the importance of accurate mating for optimal performance.
Specific tolerances and target interference/clearance values are provided for different bearing types and sizes.

Interchange Guides

Provides interchange information for precision thrust bearings, ball screw support bearings, angular contact bearings, and cylindrical roller bearings across different manufacturers.

Additional Features

NSK Verify App: A mobile application for verifying bearing authenticity and accessing product information, compatible with iOS and Android.
Recommended grease quantities for high-speed spindle bearings are provided, with specific values for different bearing types and sizes.

Grease Properties
A table outlines the properties of different grease brands, including their manufacturers, thickeners, base oils, viscosity, dropping point, and working temperature range. The main applications for each grease type are also specified, such as high-speed spindles and heavy load cylindrical roller bearings.

Data Summary
The document includes tables with numerical data related to bore numbers, diameters, and grease quantities for various bearing types. Key data points include bore diameter measurements and corresponding grease quantities for different bearing models.

Contact Information
The document provides contact details for NSK sales offices across Europe, the Middle East, and Africa, including addresses, phone numbers, fax numbers, and email addresses for each regional office.

Notes
The document includes a disclaimer about the accuracy of the information and copyright details, along with references to NSK's global and regional websites for further information.

Catalog excerpts

SUPER PRECISION BEARINGS MACHINE TOOL APPLICATIONS

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Setting the Future in Motion We are among the leading manufacturers for rolling bearings, linear technology components and steering systems worldwide. 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. Headquarter Japan The NSK Company NSK commenced operations as the first Japanese manufacturer of rolling bearings back in 1916. Ever since, we have been continuously expanding and improving not only our product portfolio but also our range...

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Our most important product: our customers’ satisfaction One thing keeps us moving: we want to help you increase the reliability of your vehicles and equipment, not only with excellent products, but above all with excellent service. Our experienced engineers have a deep understanding of systems – together with you, they work to optimise products and processes and develop solutions for the future. The goal that we are dedicated to every day is ensuring that you remain competitive over the long run. More about NSK on www.nskeurope.com SUPER PRECISION BEARINGS - MACHINE TOOL APPLICATIONS

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Super Precision Bearings – Product Range Several types of Super Precision Bearings are available from NSK. These include the ROBUST series of high performance bearings, special series of bearings for unique and specialised applications, and the standard series bearings. Angular Contact Ball Bearings - High-Precision Basic Super Precision Bearings - manufactured to conform to ISO standards › 70xx, 72xx, 79xx series › Cage design: phenolic (TR) or polyamide (TYN), depending on application requirements › Ball material: steel, ceramic (SN24) Standard Series Angular Contact Ball Bearings - High-Precision,...

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Angular Contact Ball Bearings - Ultra High-Precision High performance bearings developed specifically for internal grinding or high-speed motor applications under spring preload › Bore size range: ø6–25 mm, contact angle: 15˚ › all material: steel (S type), ceramic (H and X type) B › on separable type N › niversal combinations (DU and SU) U BSR Series Cylindrical Roller Bearings - Ultra High-Speed, Single Row Designed for ultra high-speed applications such as machining centre spindles › Cage material: brass (MR)(1), PEEK resin (TP) › oller material: steel, SHX R (1) MR cage is used in the standard...

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Super Precision Bearings – Product Range Deep Groove Ball Bearing, High Precision Suitable for high-speed and high precision motors › Cage material: ball guided polyamide cage (T1X,TYA), inner ring guided phenolic cage (T), selection depends on the application › Suitable for silent or low vibration operation Special Series Ball Screw Support Bearings - BSBD Series, NSKHPS The double row configuration, enables the bearings to support large axial forces in both directions › BSN series withouth flange, BSF series with flange › Paired types also available › Contact lip seal - provides good sealing...

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Super Precision Bearings – Nomenclatures Angular Contact Ball Bearings - Standard Serie 7 1 7 Angular Contact Ball Bearing - High Accuracy 2 Dimension 9 = 19 Series, 0 = 10 Series, 2 = 02 Series 3 Bore Code 00 = 10mm, 01 = 12mm 02 = 15mm, 03 = 17mm 4 and above: Bore diameter = Bore number x 5 (mm) 4 Contact Angle C = 15°, A5 = 25°, A = 30° 5 Material No symbol: steel ball SN24: ceramic ball Symbol Material Guiding Features Limiting Speed (dmn value) Available for 6 Cage · Standard Series Excellent wear and noise · NSKROBUST Series Oil: 1.4 million characteristics, especially effective (not available...

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Super Precision Bearings – Nomenclatures Angular Contact Ball Bearings - „Robust Serie“ for High Speed Applications 50 1 Nominal bore diameter = bore dimension in mm 2 Contact angle Type Inner and outer ring Balls S Bearing steel (SUJ2) Bearing steel (SUJ2) E Bearing steel (SUJ2) Ultra long life rolling elements (EQTF) H Bearing steel (SUJ2) Ceramic (Si3N4) X Heat resistant steel for high-speed operation (SHX) Heat resistant steel for high-speed operation (SHX) see „Standard Series“ page 7 Open type Non-contact rubber seal Direct Lubrication oil holes „Robust Shot“ 7 Arrangemenmt see „Standard...

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Cylindrical Roller Bearings - Single Row „ROBUST Series“ N Single-row CRB (Inner Ring Guided Rollers) Bore Code Bore diameter = Bore number x 5 (mm) 4 Material Material Type Inner/Outer ring Rollers RS Bearing steel (SUJ2) Bearing steel (SUJ2) RX Heat resistant steel for highspeed operation (SHX) Heat resistant steel for highspeed operation (SHX) 5 Internal design No symbol = Standard TP = Outer ring guided PEEK cage MR = Roller guided brass cage No symbol = Cylindrical bore Radial Clearance CC0 = Standard clearance for tapered bore (smaller clearance) CC1 = Standard clearance for cylindrical...

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Super Precision Bearings – Nomenclatures Cylindrical Roller Bearings - Double Row „High Rigidity Series“ NN 1 NN Double-row CRB (Inner Ring Guided Rollers) 2 39 = 39 Series 3 Bore Code Bore diameter = Bore number x 5 (mm) 4 Internal design 5 TB = Roller guided PPS cage MB = Roller guided brass cage No symbol = Ring guided brass cage 6 No symbol = Cylindrical bore Lubrication Holes No symbol = no lubrication holes E44 = Outer ring with oil groove and lubrication holes 8 Radial Clearance CC0 = Standard clearance for tapered bore CC1 = Standard clearance for cylindrical bore CC9 = Smaller clearance...

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Ball Screw Support Bearings - BSBD - Series BS Ball Screw Support Bearing F = Flange Type N = No Flange Type Nominal bore diameter = Bore dimension in mm Outer Diameter Nominal outer diameter = Dimension in mm Seal Type Accuracy Class Running accuracy ISO Class 2 Other NSK Spec No symbol = One double row angular contact ball bearing DT = Paired double row angular contact ball bearing SUPER PRECISION BEARINGS - MACHINE TOOL APPLICATIONS 11

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