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Timken® Fafnir® Super Precision Bearings for Machine Tool Applications

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Timken® Fafnir® Super Precision Bearings for Machine Tool Applications TIMKEN® FAFNIR® SUPER PRECISION BEARINGS FOR MACHINE TOOL APPLICATIONS INDEX A ENGINEERING Bearing Selection Process ......................................... 9 Determination of Applied Loads and Bearing Analysis ............... 32 Bearing Reactions, Load Ratings and Life .......................... 38 Permissible Operating Speed ..................................... 49 Lubrication ...................................................... 52 Run-In Procedures ............................................... 57 Heat Generation and Dissipation ................................... 60 Tolerances ...................................................... 63 Fitting Practices ................................................. 76 Shaft and Housing Considerations ................................. 84 Mounting Designs ................................................ 88 Setting and Preloading Guidelines ................................. 97 B PRECISION TAPERED ROLLER BEARINGS Part Numbering Systems ......................................... 103 Introduction .................................................... 106 TS Style – Metric, Inch .......................................... 108 TSF Style – Metric, Inch ......................................... 112 TXR Style – Metric, Inch ......................................... 116 TSHR Style – Metric, Inch ........................................ 118 C SUPER PRECISION BALL BEARINGS Part Numbering Systems ......................................... 125 Introduction .................................................... 130 Optimized Grades of Precision .................................... 130 Bearing Types .................................................. 130 Applications .................................................... 133 Spindle Bearings ................................................ 138 Ball Screw Support Bearings .................................... 188 D Ex-Cell-O Spindle Bearings ...................................... 202 APPENDIX Frequency Coefficients .......................................... 206 Tapered Roller Bearings ....................................... 206 Ball Bearings ................................................. 210 Ball Screw Support Series ..................................... 222 Precision Tag Deviation and Runout Charts ........................ 223 Geometry Factors ............................................... 225 Radial Internal Clearance ........................................ 227 Bearing Locknuts ............................................... 228 Locknut Torque ................................................. 228 Lubrication Specifications ....................................... 229 Operating Temperatures for Bearing Component Materials .......... 231 Conversion Tables ............................................... 232 Forms .......................................................... 233 TIMKEN MACHINE TOOL CATALOG ABOUT THE TIMKEN COMPANY Timken® Fafnir® angular contact ball bearings are manufactured to ABEC 7 (ISO P4) and ABEC 9 (ISO P2) precision classes. They The leading authority on tapered roller bearings, Timken are available in 15 degree and 25 degree contact angles, as well today applies its deep knowledge of metallurgy, tribology and as custom configurations. Different ring designs (WI, WO, WN mechanical power transmission across a variety of bearings and K) meet specific application requirements with either steel or and related systems to improve reliability and efficiency of ceramic balls. The HX and sealed HXVV bearings deliver high-speed machinery and equipment all around the world. Timken (NYSE: benefits with unique ball complements and raceway geometries. TKR; www.timken.com) engineers, manufactures and markets Sizes range from 10.000 mm (0.3937 in.) bore to 400.000 mm (15.7480 bearings, gear drives, belts, chain and related products, and in.) outside diameter. offers a spectrum of powertrain rebuild and repair services. Ball screw support bearings with steep contact angles, available To view more Timken catalogs, go to www.timken.com/catalogs in single row, or in housed units, provide high levels of stiffness for for interactive versions, or to download a catalog app for your the demands of servo-controlled machinery. Sealed double-row smart phone or mobile device. flanged (or cartridge) units simplify installation. As a Timken customer, you receive an uncompromising standard of TIMKEN MACHINE TOOL SOLUTIONS quality across the broadest range of bearings and related products. When it comes to improving machine tool performance, Timken leads Brands like Timken and Fafnir reflect an extensive line of tapered, the industry with an unmatched offering of friction management spherical, cylindrical, ball bearings and mounted units ideal for solutions. Our rolling bearings and related products and services virtually every machine tool and industrial application. Our core set the standard in high-speed spindles, ball screws, rotary tables products are complemented by an ever-growing line of friction and other demanding applications. This wide variety means that management solutions including lubricants, single-point lubricators, we can offer the right bearing for almost any machine position. maintenance tools, safety equipment, repair services that help keep Backed by global Timken innovation and a long machine tool operations running smoothly. heritage, we focus on enhancing customer performance and productivity through our product technology and application The EZ Machine Tool Program can perform cost-effective quick experience. With renowned Timken quality and a commitment to delivery of a variety of machine tool ball bearings for product not precision that exceeds industry standards, we continue to develop easily found at local distribution centers. bearings that support the drive for higher speeds, maximum resolution, accuracy and repeatability. Longer bearing service life translates to more machine uptime and production throughout. 2 PRODUCT BREADTH Timken offers a broad range of rolling bearings and related products and services to meet worldwide machine tool needs. Our portfolio includes specialized tapered roller and ball bearings, produced to the precision classes that deliver the operating characteristics 2 necessary for the highest performance. Timken® bearings meet or exceed application needs for rotational accuracy, consistency and rigidity. Our total friction management approach also includes lubrication, condition monitors and other products “around the bearing.” Timken® tapered roller bearing types available in precision classes include the single-row TS and TSF styles, as well as the variable- preload Hydra-Rib™ bearing, the high-speed TSMA bearing and 2 the compact TXR crossed roller bearing. Timken® precision tapered roller bearings range from less than 20.000 mm (0.7874 in.) bore to more than 2000.000 mm (78.7402 in.) outside diameter, depending upon bearing type. 2 TIMKEN MACHINE TOOL CATALOG Introduction ABOUT THIS CATALOG Timken offers an extensive range of bearings and accessories in both imperial and metric sizes. For your convenience, size ranges are indicated both in millimeters and inches. Contact your Timken sales representative to learn more about our complete line for the special needs of your application. USING THIS CATALOG We are committed to providing our customers with maximum service and quality. This catalog contains dimensions, tolerances and load ratings, as well as an engineering section describing fitting practices for shafts and housings, internal clearances, materials, and other bearing features. It can provide valuable assistance in the initial consideration of the type and characteristics of the bearing that may best suit your particular needs. CATALOG FEATURES Dimension and load rating data within the various types and styles of bearings is organized by size. ISO, DIN, and ABMA, as used in this catalog, refer to the International Organization for Standardization, Deutsches Institut für Normung EV and the American Bearing Manufacturers Association. SPECIAL APPLICATIONS Some products, such as for aerospace applications, are made to special standards, and only the original equipment manufacturer can determine if a particular bearing is suitable for use in their equipment. NOTE Product performance is affected by many factors beyond the control of Timken. Therefore, the suitability and feasibility of all designs and product selection should be validated by you. This catalog is provided solely to give you, a customer of Timken or its parent or affiliates, analysis tools and data to assist you in your design. No warranty, expressed or implied, including any warranty of merchantability or fitness for a particular purpose, is made by Timken. Timken products are sold subject to a Limited Warranty. TIMKEN MACHINE TOOL CATALOG 3 TIMKEN MACHINE TOOL CATALOG PURCHASER’S EXCLUSIVE REMEDY/SELLER’S EXPRESS LIMIT OF LIABILITY Purchaser’s exclusive remedy for any warranty claim, or for any claim arising out of the purchase or use of our products, shall be the replacement of said products. We will replace our products, without charge to the purchaser, f.o.b. our point of shipment. We will not be liable for any consequential, incidental, or other damages sustained by purchaser, including but not limited to, loss of profits or revenue, loss of use of product, cost of capital, cost of substituted product, facilities, services, or claims of purchaser’s customers for any damages. Any warranty claim of purchaser must be made within one year
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