Industrial shaft seals - SKF

1 Industrial shaft seals SI conversion table Quantity Unit Conversion Length inch 1 mm in. 1 in. 25,40 mm foot 1m ft. 1 ft. 0,3048 m yard 1m yd. 1 yd. 0,9144 m mile 1 km mile 1 mile 1,609 km Velocity, foot per second 1 m/s ft/s 1 ft/s 0,30480 m/s speed foot per minute 1 m/s ft/min 1 ft/min 0,00508 m/s mile per hour 1 km/h mile/h 1 mile/h 1,609 km/h (mph) (mph). Force pound-force 1N lbf. 1 lbf. 4,4482 N. Pressure, pounds per 1 MPa 145 psi 1 psi 6,8948 103 Pa stress square inch Temperature (degree) Celsius tC = 0,555 (tF 32) Fahrenheit tF = 1,8 tC + 32. SKF, DURATEMP, SPEEDI-SLEEVE and WAVE are registered trademarks of the SKF Group. SKF Group 2013. The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written per- mission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or conse- quential arising out of the use of the information contained herein.

2 The data in this publication may differ from that provided in earlier publications because of redesign, technological developments or revised methods of calculation. SKF reserves the right to make continuing improvements to SKF products without prior notice with respect to materials, design and manufacturing methods, as well as changes necessitated by technological developments. PUB SE/P1 10919/2 EN June 2013. This publication supersedes publication 5300. 1 Product data general.. 11 1. 2 Radial shaft seals .. 47 2. 3 Cassette seals .. 321 3. 4 Wear sleeves.. 327 4. 5 Track pin seals .. 373 5. 6 Metal face seals .. 379 6. 7 V-ring seals .. 389 7. 8 Axial clamp seals .. 471 8. 9 Product index.. 482 9. 1. This is SKF. From one simple but inspired solution to a mis- alignment problem in a textile mill in Sweden, and fifteen employees in 1907, SKF has grown to become a global Industrial knowledge leader.

3 Over the years we have built on our expertise in bearings, extending it to seals , mechatronics, services and lubrication systems. Our know- ledge network includes 46 000 employees, 15 000 distributor partners, offices in more than 130 countries, and a growing number of SKF Solution Factory sites around the world. Research and development We have hands-on experience in over forty industries, based on our employees' knowledge of real life conditions. In addition our world- leading experts and university partners who pioneer advanced theoretical research and development in areas including tribology, condi- tion monitoring, asset management and bearing life theory. Our ongoing commitment to research and development helps us keep our customers at the forefront of their industries. SKF Solution Factory makes SKF knowledge and manufacturing expertise available locally, to provide unique solutions and services to our customers.

4 2. Meeting the toughest challenges Our network of knowledge and experience along with our understanding of how our core technologies can be combined helps us create innovative solutions that meet the toughest of challenges. We work closely with our customers throughout the asset life cycle, helping them to profitably and responsibly grow their businesses. Working for a sustainable future Since 2005, SKF has worked to reduce the negative environmental impact from our own operations and those of our suppliers. Our con- tinuing technology development introduced the SKF BeyondZero portfolio of products and services which improve efficiency and reduce energy losses, as well as enable new technol- ogies harnessing wind, solar and ocean power. This combined approach helps reduce the environmental impact both in our own oper- ations and in our customers'. Working with SKF IT and logistics systems and application experts, SKF.

5 Authorized Distributors deliver a valuable mix of product and application knowledge to customers worldwide. 3. SKF the knowledge engineering company Our knowledge Design and develop your success at ion Man ufa ctu SKF Life Cycle Management is how ic re cif an d Spe we combine our technology plat . forms and advanced services, and te st apply them at each stage of the SKF Life Cycle asset life cycle, to help our cus Management ission tomers to be more successful, Ma ain in sustainable and profitable. t mm an dr ep co air an d all Opera Inst te and monitor Working closely with you entire application. This approach doesn't just Our objective is to help our customers improve focus on individual components like bearings or productivity, minimize maintenance, achieve seals . It looks at the whole application to see higher energy and resource efficiency, and opti- how each component interacts with the next.

6 Mize designs for long service life and reliability. Design optimization and verification Innovative solutions SKF can work with you to optimize current or Whether the application is linear or rotary or a new designs with proprietary 3-D modeling combination of the two, SKF engineers can work software that can also be used as a virtual test with you at each stage of the asset life cycle to rig to confirm the integrity of the design. improve machine performance by looking at the 4. Bearings SKF is the world leader in the design, development and manufacture of high performance rolling bearings, plain bearings, bearing units and housings. Machinery maintenance Condition monitoring technologies and maintenance services from SKF can help minimize unplanned down- time, improve operational efficiency and reduce main- tenance costs. Sealing solutions SKF offers standard seals and custom engineered seal - ing solutions to increase uptime, improve machine reli- ability, reduce friction and power losses, and extend lubricant life.

7 Mechatronics SKF fly-by-wire systems for aircraft and drive-by-wire systems for off-road, agricultural and forklift applica- tions replace heavy, grease or oil consuming mechanical and hydraulic systems. Lubrication solutions From specialized lubricants to state-of-the-art lubrication systems and lubrication management services, lubrication solutions from SKF can help to reduce lubrication related downtime and lubricant consumption. Actuation and motion control With a wide assortment of products from actuators and ball screws to profile rail guides SKF can work with you to solve your most pressing linear system challenges. 5. Contents This is SKF .. 2. SKF the knowledge engineering company .. 4. Foreword .. 9. SKF Industrial shaft seals and accessories.. 10. 1 Product data general.. 11. Industrial shaft seals .. 12. Profile overview selection.. 13. Radial shaft seals .. 13. Wear sleeves.

8 15. Axial shaft seals .. 16. Selection of seal design and material .. 17. Grease retention .. 17. Oil retention.. 18. Contaminant exclusion .. 19. Retention and exclusion.. 20. Separating two liquids.. 21. Circumferential and rotational speed .. 22. Pressure differentials.. 23. Limited space.. 24. Installation restrictions .. 25. Arrangement.. 26. Counterface design .. 27. Axial movement.. 28. seal materials.. 29. Cases and inserts.. 29. Garter springs.. 29. SKF Bore Tite Coating .. 29. Adhesives and bonding agents .. 29. Sealing lip materials .. 30. Wear resistance.. 33. Operating temperatures .. 34. Chemical resistance.. 35. Storage and handling of seals .. 44. General .. 44. Storage .. 44. Cleaning and maintenance .. 45. 6. 2 Radial shaft seals .. 47 seals for general Industrial General .. 50 applications.. 92. Outside diameter design.. 54 HMS5 and HMSA10 seals .. 92. SKF Bore Tite Coating.

9 54 CRW1, CRWA1, CRWH1. Garter springs.. 55 and CRWHA1 seals .. 104. Dimensions.. 55 CRW5 and CRWA5 seals .. 160. Tolerances.. 55 HDW1 seals .. 164. Sealing lip design.. 57 CRS1, CRSH1, CRSA1. Auxiliary lips.. 58 and CRSHA1 seals .. 168. Coaxiality and runout.. 59 PTFE radial shaft seals .. 174. Coaxiality.. 59 HM and TL seals for grease Runout.. 61 lubricated applications.. 178. Axial movement.. 63 X seals , sealing against Permissible speeds .. 63 housing bore.. 192. Lubrication.. 65 seals for heavy Industrial Lubrication of paired arrangements .. 65 applications.. 202. Friction.. 66 General .. 202. Chemical and thermal resistance.. 67 Metal-cased seals .. 202. seals under pressure.. 69 Rubber outside diameter seals .. 207. shaft requirements.. 70 Additional design features.. 211. General .. 70 Size options of metal-cased HDS seals Tolerances.. 70 and all-rubber HS seals .. 215.

10 Surface roughness.. 70 Product tables.. 217. Surface finish.. 72. Hardness and surface treatment.. 72 3 Cassette seals .. 321. Lead-in chamfers .. 72 General .. 322. Housing bore requirements.. 74 Design features.. 323. General .. 74 Testing.. 323. Metal-reinforced seals .. 74 Installation.. 323. seals without metal-reinforcement.. 74 SKF Mudblock seal designs Tolerances.. 76 MUD5 and MUD7.. 324. Surface roughness.. 76. seal installation, general Industrial 4 Wear sleeves .. 327. applications.. 77 General .. 328. General .. 77 SKF Speedi-Sleeve .. 329. seal installation, heavy Industrial Features.. 329. applications.. 79 Size range .. 329. Metal-reinforced seals .. 79 SKF Speedi-Sleeve Gold .. 330. seals without metal reinforcement.. 80 Test results.. 330. Split seals .. 80 Selecting the right size.. 330. Cover plates.. 82 Installing SKF Speedi-Sleeve.. 331. Multiple HS seal installations.