Reliable Solutions for Continuous Casters

Transcription

1 eliable Solutions for Continuous Casters

2 For More Than A Century, Our Stanars Have Set The Stanar Aroun the worl, companies turn to Timken for innovation an reliability. With expertise in materials science an precision manufacturing, we leverage more than 100 years of experience helping our customers solve their toughest technical problems in the worl s most emaning applications. Inustry Experience The continuous caster is one of the most challenging environments for bearings. In many critical positions, they are subject to high loas an low rotational spees, often at elevate temperatures. Many bearings must also perform in an environment heavily contaminate with water, steam an scale. As a steelmaker, Timken unerstans the challenges of this high-capacity, high-heat application. We know that every bearing in the caster from the lale turret, own through the bener an segments, to the ischarge area must eliver reliable performance. That is why the inustry s leaing machine builers an operators turn to Timken for their continuous caster solutions. Technology an Innovation As an innovation leaer, Timken invests more than $50 million annually in our global technology organization. This investment provies a significant return, allowing Timken to evelop innovative new proucts an technologies that set stanars within the primary metals inustry. Friction Management Solutions A Total System Approach At Timken, we integrate bearings, lubrication, seals, repair services, maintenance practices, gears, conition monitoring an training to aress a variety of customer requirements. As your nees change, we continue to leverage our capabilities to offer a broaer array of bearings, relate proucts an integrate services. Global Presence With nearly 200 technology, manufacturing, sales an istribution facilities in 26 countries, Timken has a global network an commitment to quality to meet our customers nees throughout the worl. Timken worlwie quality stanars are implemente in every plant to ensure global consistency in esign an manufacturing. 2

3 The Caster Challenge Cost associate with machine operation an owntime an the impact on ownstream operations Maintenance an repair of segment roll bearings an housings Controlling costs per ton an maintenance bugets The Timken Solution Improve prouct reliability an performance increases mill uptime an prouctivity Avance prouct esign allows for quick an easy segment rebuil an reinstallation Application knowlege associate with 40 years of experience supplying to the continuous casters market eclamation services exten bearing life an reuce operating cost Fiel engineering support provies on-site trouble-shooting, technical assistance an training An insier s knowlege of steelmaking an continuous casting makes Timken a truste resource for your operations. Photos taken from insie Timken s Harrison Steel Plant. 3

4 Timken earings for Continuous Casters Lale Turret an Mol Oscillator Spherical oller earing Type YM Tapere oller earing Cylinrical oller earing Cut-off an un-out Table SAF Pillow lock AP earing 4

5 Foot olls an ener NA49 Neele oller earing NA69 Neele oller earing Spherical oller earing - Type CJ Cylinrical oller earing - NNCF Segments Split Spherical oller earing Split Cylinrical oller earing Spherical oller earing Type CJ an YM AP earing Cylinrical oller earing Water Coole Housing 5

6 Contact your Timken representative for more information on proper mounting an lubrication practices for your application. Mounting The majority of bearing applications in a continuous caster aopt stanar fitting practices, which is to tight fit the bearing ring that rotates an to loose fit the stationary ring. There are some exceptions, that can vary by supplier. For example, the foot roll bearings locate immeiately beneath the mol are often replace on a regular scheule, regarless of conition. This process can be simplifie by using loose or transition fits for the rotating ring of the bearing. This exception also applies to split spherical roller bearings that are use for intermeiate support of the riven segment rolls. These positions must be able to accommoate axial float because the roll will change in length accoring to temperature. This is achieve by loose fitting the bearing inner ring on the roll journal, allowing it to move back an forth through the bore of the bearing. Mounting tools are highly recommene to ensure proper bearing installation an removal. Timken offers a full line of tools esigne to help exten bearing life an ease maintenance practices. Inuction heaters provie a fast, controlle an environmentally frienly heating metho to ai in bearing mounting. Pullers are recommene for the removal of many kins of shaftfitte parts. Timken has a wie range of self-containe portable hyraulic pulling systems with capacities from four to 30 tons. 6

7 Lubrication Proper lubrication is critical to bearing an machine performance. Timken application an environmentspecific grease lubricants have been evelope from our knowlege of tribology, anti-friction bearings an how these two properties affect overall system performance. Timken offers a choice of premium ISO460 grease for continuous casters. For continuous casters, the most wiely use lubrication metho is the centralize grease istribution system. Several separate systems are use serving a iscrete caster section. These systems pump a relatively small amount of grease at frequent intervals to the bearing. The grease quantity is typically less than 5cc (0.3 in 3 ), but the frequency is typically six to 10 times per hour. This frequent cycle keeps the bearing full with fresh grease while also purging ol grease an contaminants. An alternative is the air-oil system, which uses compresse air to rive a film of oil through istribution pipes to the bearings. These systems operate continuously to keep fresh lubricant flowing while purging the bearing. The air-oil systems can operate with significantly reuce lubricant consumption. Consult with a Timken engineer for air-oil application. The bearing positions associate with the support of the slab combine high loas an elevate temperatures with low rotational spee. This presents ifficulties in creating a lubricant film between the bearing s rollers an raceways. A lubricant viscosity of more than 3000cSt/15000SUS woul be require to maintain a lubricant film, but istribution systems are limite to a maximum of about 600cSt/2000SUS. High viscosity base oil greases in the segment positions must also be selecte to resist corrosion an ai in sealing as a result of continuous exposure to seconary cooling water spray an har ebris contamination. earing eclamation With nearly 90 years of experience owning an operating our own steel mills, Timken unerstans the maintenance nees of toay s mills from the insie out. We leverage this knowlege to evelop an refine maintenance services for the primary metals inustry that exten component life an lower costs per ton. Develope for continuous caster bearings, Timken s bearing reclamation services are ieal for smaller bearings use in large quantities. Segment roll maintenance is expensive. Our bearing reclamation services can reuce your cost of operation by returning refurbishe bearings to service for the fraction of the cost. egarless of the original manufacturer or type of bearing, our services are backe by the Timken name an quality stanars. Our skille repair specialists are experience in recognizing various types of amage an the operating conitions that impact bearing performance. Our process begins with an initial inspection to etermine the level of service require. Serviceable bearings are isassemble, run through our proprietary polishing agent, reassemble an preserve. eclaime bearings are then returne to the customer with a written report an one-year limite warranty. A typical turn-aroun time is generally two weeks or less. Timken s bearing reclamation services can reuce your cost of operation by returning refurbishe bearings to service. 7

8 The bearing esigns chosen for this catalog represent common proucts foun in continuous casters. Contact your Timken sales representative or visit com/catalogs to learn more about our complete line of proucts for your application. Spherical oller earings Type CJ an YM a Da D CJ a Da D a YM Da D 8

9 Design enefits: Avance bearing steel offers improve cleanliness an heat stability for high loa capacity an wear resistance. Nomenclature 2-ow S Cage Mo. Coes IC K YM W33 C3 ugge steel an brass retainers provie high static loa capacity with maximum number of large rollers. Avance geometry reuces friction an heat generation. Expane internal clearance tolerates higher operating temperatures. Improve surface finishes promote lubrication at slow spees. Plain O.D. outer ring option eters fractures from high static loas an impact. Dimension Series Spherical roller bearings are efine by a series base on the with (0, 1, 2, 3, 4) an outsie iameter (8, 9, 0, 1, 2, 3) ore Coe Small an meium bore sizes ore coe x 5 = bore size in mm [ex., OE = 22 x 5 = 110 mm] Large sizes ore coe = bore size in mm Example: 232/600YMW507C08 [ex., OE = 600 mm] ore Style Two bore styles For cylinrical bore, there is no esignation in the part escription For tapere bore, a K will appear in the part escription W33 W841 W901 W33W89 W33W94 Moification Coes Timken SKF FAG Timken General Definition W20 W20 SY Outer ring with stanar lubrication holes W31 W31 ****** earing inspecte to certain quality control requirements W33 W33 S Outer ring with stanar lube groove an lube holes W89 W26 H40AA Inner ring with lube groove an lube holes, lube grooves in faces of retainer W94 W26 H40A Inner ring with lube holes, lube grooves in faces of retainer W841 ****** ****** Plain outer-ring O.D. (no lube groove or holes) plus W31 C1 to C5 C1 to C5 C1 to C5 aial internal clearance coe K K K Stanar tapere bore (refer to Note 1) Note 2 S1 S1 Inner an outer rings stabilize for operation up to 200º C / 392º F S2 S2 S2 Inner an outer rings stabilize for operation up to 250º C / 482º F S3 S3 S3 Inner an outer rings stabilize for operation up to 300º C / 572º F S4 S4 S4 Inner an outer rings stabilize for operation up to 350º C / 662º F Note 1: Stanar taper for 222, 223, 230, 231, 232 an 239 series is 1:12 Stanar taper for 248, 249, 240, 241 an 242 series is 1:30 Note 2: Timken stanar heat stabilizing treatment is S1 9

10 a Da D a Da D Spherical oller earings Type CJ an YM CJ YM acking Diameter Loa atings earing Number ore D O.D. With Fillet(1) (max) a Shaft D a Housing Static Loa ating C 0 Dynamic Loa ating C mm mm mm mm mm mm kn kn 22205CJ CJ CJ CJ CJ CJ YM CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ YM CJ CJ CJ CJ CJ YM CJ YM (1) Maximum shaft or housing fillet raius that bearing corners will clear For aitional information, visit 10

11 a Da D a Da D Spherical oller earings Type CJ an YM CJ YM acking Diameter Loa atings earing Number ore D O.D. With Fillet(1) (max) a Shaft D a Housing Static Loa ating C 0 Dynamic Loa ating C mm mm mm mm mm mm kn kn 22320CJ CJ CJ YM YM YM CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ CJ YM CJ CJ CJ YM CJ YM CJ CJ YM CJ YM CJ (1) Maximum shaft or housing fillet raius that bearing corners will clear For aitional information, visit 11

12 a Da D a Da D Spherical oller earings Type CJ an YM CJ YM acking Diameter Loa atings earing Number ore D O.D. With Fillet(1) (max) a Shaft D a Housing Static Loa ating C 0 Dynamic Loa ating C mm mm mm mm mm mm kn kn 24032CJ YM CJ YM CJ YM CJ YM CJ CJ YM YM CJ YM CJ CJ YM YM YM CJ YM CJ YM YM YM YM CJ YM YM YM YM YM YM (1) Maximum shaft or housing fillet raius that bearing corners will clear For aitional information, visit 12

13 a Da D a Da D Spherical oller earings Type CJ an YM CJ YM acking Diameter Loa atings earing Number ore D O.D. With Fillet(1) (max) a Shaft D a Housing Static Loa ating C 0 Dynamic Loa ating C mm mm mm mm mm mm kn kn 24044YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM YM (1) Maximum shaft or housing fillet raius that bearing corners will clear For aitional information, visit 13

14 Split Spherical an Cylinrical oller earings an Housing Assemblies A I I A H SHAFT SHAFT H 1 H ADIAL CYLINDICAL ASSEMLIES ADIAL CYLINDICAL HOUSINGS A I I A I I A H SHAFT SHAFT H 1 H SHAFT SHAFT H 1 ADIAL SPHEICAL ASSEMLIES ADIAL SPHEICAL HOUSINGS 14

15 Design enefits: Engineere specifically for challenging continuous slab caster environment. Available as full complement cylinrical or cage spherical roller bearings. The spherical bearing characteristics accommoate normal levels of misalignment. In cylinrical roller bearing assemblies, the housing accommoates misalignment. Half-outer ring esign reuces cap height to maximize clearance between the cast slab. Nomenclature earing ore (mm) S = Spherical C = Cylinrical Moification Letter(s) N = Nickel plate housing 2n Letter = ore with 130 S HSGA 1734 N HSGA = Housing assembly complete HSG = Housing only SLP = Seal kit Series Number ase on integral geometry, always four igits C = earing Water-coole housings utilize Timken s patente cooling chamber esign, which maximizes the cooling area without introucing ea zones an subsequent hot spots. Triple sealing elements protect the bearing from contamination while also allowing lubricant purging in centralize grease an air-oil type systems. Super-finishe rollers an races for improve operation at extremely slow spees. 15

16 A I I H SHAFT SHAFT H 1 aial Cylinrical Assemblies Housing Numbers Shaft Dia. A (max.) With (max.) Length H (max.) Height H 1 Shaft Height I Sie Clearance mm mm mm mm mm mm 75CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA1323A CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA CHSGA

17 A I I H SHAFT SHAFT H 1 aial Spherical Assemblies Housing Numbers Shaft Dia. A (max.) With (max.) Length H (max.) Height H 1 Shaft Height I Sie Clearance mm mm mm mm mm mm 120SHSGA SHSGA SHSGA SHSGA SHGA SHSGA SHSGA SHSGA SHSGA SHSGA SHSGA SHSGA1936EN SHSGA SHSGA SHSGA SHSGA SHSGA SHSGA2037AN SHSGA

18 Neele oller earings - NA49 an NA69 r r NA49 F w D NA69 18

19 Design enefits: Available in single row construction (series 49) an ouble row construction (series 69). Meets ISO stanar 492 covering raial bearings. aial internal clearance is in accorance with ISO Stanar Low raial cross section with high raial ynamic an static loa rating. Must be use with an axial bearing. Available with special clearance an higher stabilizing heat treatment to accommoate conitions normally foun in continuous casters. Steel cage improves roller guiance an lubricating grease capacity. Available as seale assembly (single or ouble) 110 C / 230 F maximum continuous operating temperature. Lubricating groove an holes in outer ring improve grease flow. Nomenclature Prefix NA: Neele roller bearing with inner ring NJK: Neele roller bearing with inner ring NJKS: Neele roller bearing with inner ring NAO: Neele roller bearing with inner ring, without flanges NA S Series 48: Dimension series 48 49: Dimension series 49 69: Dimension series 69 Inner ing ore Diameter (for NA49, NA69: <17 mm bore) mm mm mm mm (for NA48, NA49, NA69: 20 mm bore) bore coe x 5 = bore iameter Suffix S: Lip contact seal on one sie.2s: Lip contact seal on both sies TN: Mole cage of reinforce polymer Moification Coes Timken SKF FAG Timken General Definition Special raial internal clearance.min.max (micron).s.s.s One seal, nitrile rubber.2s.2s.2s Two seals S3 S3 S3 Inner an outer rings stabilize for operation up to 300 C / 572 F S4 S4 S4 Inner an outer rings stabilize for operation up to 350 C / 662 F TH TH TH Mole cage of reinforce polymer 19

20 r r F w D Neele oller earings - NA49 an NA69 Dimensions mm earing Designation Loa atings kn Dynamic Static D F w r s min s(1) C C NA NA NA49/ NA69/ NA NA NA49/ NA69/ NA NA NA NA NA NA NA NA NA (1) See engineering section of the Timken Proucts Catalog for instructions on use For aitional information, visit 20

21 r r F w D Neele oller earings - NA49 an NA69 Dimensions mm earing Designation Loa atings kn Dynamic Static D F w r s min s(1) C C NA NA NA NA NA NA NA NA4915 (2) NA NA NA NA NA NA NA (1) See engineering section of the Timken Proucts Catalog for instructions on use (2) Equivalent to part number AJ64029/A64029 For aitional information, visit 21

22 SAF Pillow locks Design enefits: Contact your Timken representative to learn more about our complete line of SAF pillow blocks, AP bearings an cylinrical roller bearings for continuous caster applications. Convenient split esign facilitates assembly an isassembly. Timken spherical roller bearings evelop maximum loa capacity an can hanle ynamic misalignment. Precision machine housing seat provies even loa istribution an epenable float mountings. Can accommoate both inch an metric shafting. Allows grease or oil bath an can be easily aapte to circulating oil systems. Wie range of innovative esigns provies effective sealing for ifferent conitions an spees. Timken engineers can help optimize performance for stanar to specialize applications. Can accommoate conition monitoring an temperature sensors. SAF Pillow locks AP earings Design enefits: Self-containe, seale an compact assembly offers savings in esign an installation. Two-row tapere roller bearing configuration provies high ynamic an static raial loa capacity together with thrust capacity. AP earings Case-carburize bearing components combine urable rolling surfaces with a uctile core to offer fracture toughness an wear an fatigue resistance. Large range of accessories an options facilitates flexibility in machine esign. Assemblies are repairable, offering operational cost savings. Cylinrical oller earings Design enefits: NNCF earings Single an ouble-row, full-complement cylinrical roller bearings (example NNCF5008 DA.V.C4.S3). Features inclue integral flanges on the inner an outer rings. Can manage axial loas in one irection an permit small axial isplacements. Lubricating groove an holes in outer ring improve grease flow. 22

23 Timken s friction management solutions for the primary metals inustry exten beyon the bearing. From conition monitoring equipment to inustrial greases, our full portfolio of relate proucts an services are esigne to boost your mill s prouctivity an increase bearing life. elate Friction Management Solutions Conition Monitoring Timken s inustrial portfolio of integrate services help customers to monitor an improve overall system performance. Our line of conition monitoring equipment evaluates the conition of a bearing, lubrication quality an machine vibration to ientify potential system issues before bearing amage occurs. Inustrial Seals Timken s line of seals feature a leaing combination of quality, technology an coverage. These seals are evelope using innovative material an process solutions to help protect machinery, prevent contamination an minimize plant owntime. Lubricators Timken G-Power an M-Power singlepoint lubricators eliver perioic grease or oil to bearings an other inustrial equipment components. C-Power multi-point lubricators are a centralize lubrication system capable of elivering grease to up to six lubrication points. A full line of accessories offer easy installation an a host of mounting options for har-to-reach locations. Inustrial Greases Timken has a broa range of application an environment-specific grease lubricants, evelope by leveraging our knowlege of tribology, anti-friction bearings, an how these two properties affect overall system performance. Maintenance Tools Timken unerstans the importance of proper maintenance proceures in maximizing prouct an equipment life. High-quality Timken maintenance tools help to exten bearing life in your application through proper installation, removal an service. Customer Training From mounting an avance setting techniques to maintenance an amage analysis, Timken training seminars can provie practical hans-on knowlege an a comprehensive unerstaning of proper maintenance practices. 23

24 The Timken Company keeps the worl turning, with innovative friction management an power transmission proucts an services, enabling our customers to perform faster an more efficiently. Timken is your source for continuous caster solutions. For more information, contact your Timken representative or visit timken.com. Front cover photo courtesy of SMS Demag. 10M :29 Orer No Timken is a registere traemark of The Timken Company The Timken Company Printe in U.S.A. The Timken team applies their know-how to improve the reliability an performance of machinery in iverse markets worlwie. The company esigns, makes an markets high-performance mechanical components, incluing bearings, gears, belts, chain an relate mechanical power transmission proucts an services.