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BARDEN Precision Ball Bearings Catalog CD-30 INTRODUCTION

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BARDEN Precision Ball Bearings Catalog CD-30 INTRODUCTION BARDEN Precision Ball Bearings Catalog CD-30 INTRODUCTION HOW THIS CATALOG IS ORGANIZED Welcome to the world of Barden Precision Bearings. This catalog contains the most complete list of Barden precision bearings currently available. If you have a copy of an earlier Barden catalog, you’ll notice that this version is organized differently. First of all, the catalog is divided into two primary sections: 1) product 2) engineering The product section is now organized by bearing type: • Instrument Bearings (Deep Groove and Angular Contact) • Spindle Bearings (Angular Contact) • Spindle Bearings (Deep Groove) • Ball Screw Support Bearings Barden manufactures super precision spindle bearings and instrument bearings at plants located in Danbury, Connecticut (shown above) and the U.K. Bearings are also now listed by bore diameter — from the smallest to the largest. Another key change to this catalog is that data on limiting speeds, ball complement, static capacity, basic dynamic load ratings and standard preloads has been moved to the appropriate product page, alongside bear- ing dimensions and nomenclature. This information was previously listed in the engineering section in the back of our older catalogs. Additional relevant data (e.g. on seal and cage options, etc) can now be found in the appropriate prod- uct sections, instead of appearing in the general engi- neering reference section, as before. The engineering section also has been reorganized. Much of the specific bearing operating data, as men- tioned, can now be found in the appropriate product section. New material has also been added to the engi- neering section, particularly on handling and mounting procedures. One significant new feature, this catalog now has four fold-out pages at the beginning of each product sec- tion. Each fold-out page contains detailed descriptions of appropriate bearing nomenclature by type of bearing. We believe that all of these changes will improve the functionality —and usefulness— of our primary product catalog. Finding exactly the right Barden Precision Bear- ing should now be easier than ever. Finally, we would welcome any comments or sugges- tions you may have regarding our new format. And, as always, thank you for choosing Barden. 2 TABLE OF CONTENTS CAPABILITIES ENGINEERING SECTION, continued Barden’s Commitment to Excellence.......................4 Bearing Performance................................105–116 Barden Products .........................................................4 Bearing Life........................................................105 Precision Classes.........................................................4 Service Life.........................................................105 Going Beyond ABEC Standards...............................5 Fatigue Life.........................................................106 Sizes and Configurations...........................................5 Sample Fatigue Life Calculation ......................108 Applications................................................................6 Miscellaneous Life Considerations ..................109 Quality Control and Engineering .............................7 Equipment Life..................................................110 PRODUCT SECTION, PRODUCT TABLES Vibration ............................................................110 Yield....................................................................114 Instrument Bearings Torque.................................................................114 Deep Groove and Angular Contact....................9 Measurement and Testing Techniques .............114 Spindle Bearings (Deep Groove).............................29 Spindle Bearings (Angular Contact) .......................45 Bearing Application...................................118–138 Ball Screw Support Bearings....................................67 Mounting and Fitting........................................118 Shaft and Housing Fits......................................119 ENGINEERING SECTION Shaft and Housing Size Determination...........121 Bearing Selection.........................................73–103 Shaft and Housing Shoulder Diameters..........122 Selecting the Right Bearing.................................76 Lubrication Windows........................................130 Operating Conditions .........................................76 Maximum Fillet Radii .......................................132 Bearing Types.......................................................76 Nonferrous Bearing Housings ..........................132 Bearing Size..........................................................77 Random and Selective Fitting ..........................133 Ball and Ring Materials.......................................78 Calibration .........................................................133 Ceramic Hybrids..................................................78 Axial Location and Control of End Play.........135 Bearing Capacity..................................................81 Preload Adjusting Springs.................................135 Bearing Cages.......................................................81 Clamping Plates and Nuts ................................135 Bearing Closures..................................................85 Maintaining Bearing Cleanliness......................136 Selection of Closures...........................................86 Handling Guidelines .........................................138 Attainable Speeds ................................................88 Limiting Speed Factors........................................88 Barden Warranty .........................................................139 Internal Design Parameters .................................90 Index ............................................................................140 Preloading.............................................................92 Lubrication...........................................................97 Tolerances and Geometric Accuracy ................103 The data, specifications and characteristics in this catalog were developed using sound testing and engineering techniques and are believed to be accurate. Every attempt has been made to preclude errors. However, use of this information is the customer’s responsibility. The Barden Corporation’s sole responsibility or liability is contained in the Warranty statement at the end of this catalog. 3 CAPABILITIES The Barden Corporation is a world leader in the engi- neering, design and manufacture of precision ball bear- ings and bearing components. In 1991, Barden became affiliated with the FAG Kugelfischer Group, and now forms the nucleus of its Aerospace and Super Precision Division along with Barden U.K., a manufacturer of precision ball and spindle bearings, based in Plymouth, England. Also included in this division are facilities in Stratford, Canada; Schweinfurt, Germany and subsidiary Winsted Precision Ball Company. Aerospace and Super Precision Division customers are served primarily by a staff of Barden Sales Engineers. The replacement market is served by approximately 1,000 distributor outlets. Both are supplemented by a network of agents and distributors throughout the world. With this global distribution system, Barden can pro- Hybrid bearings utilizing ceramic balls help reduce vibration levels resulting in lower operat- vide bearings of identical quality at any point of need. ing temperatures, longer life, greater accuracy and higher running speeds. Present customers include many multinational compa- BARDEN’S COMMITMENT nies that buy Barden bearings in more than one country. TO EXCELLENCE BARDEN PRODUCTS The Barden Corporation was originally founded to make The Barden product line encompasses predominantly ball bearings of exceptional quality requiring rotational radial, single row, super precision angular contact (sepa- precision and tolerance control beyond the scope of rable and nonseparable) and deep groove ball bearings. technology then available. Today, over fifty years later, Ball bearings are made to exacting ABEC-7 and ABEC-9 Barden continues to meet the challenge of manufactur- specifications, standards which Barden routinely exceeds. ing to super-precise/super-critical levels, and is recognized Barden super precision bearings come in inch or as an industry leader in this achievement. Excellence in metric dimensions with diameters ranging from 3/8" 1 manufacturing remains our guiding principle. (9.5mm) O.D. up to 11/2" (300mm) O.D. A variety of Barden produces thousands of bearing types, sizes seals, shields and metallic/nonmetallic cage designs are and designs for a wide range of precision applications available to satisfy most requirements. Many Barden serving narrow — but highly demanding — market seg- bearings operate comfortably at speeds ranging to 2.0 ments, like spindle and turbine bearings for industrial million dN (bore in mm ϫ RPM), or above. machinery and aircraft accessories, as well as instrument bearings for medical applications and gyroscopes. PRECISION CLASSES Barden’s goal remains not only to provide the high- est quality, most precise bearings that can be made, but Precision ball bearings are manufactured to tolerance to enable our customers to compete more successfully standards set by the Bearing Engineers Committee in the markets they serve. (BEC) of the American Bearing Manufacturers Associa- Regardless of design, all Barden bearings share one tion (ABMA). These standards have been accepted by thing in common: they adhere to the highest
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