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SKF Seal Handbook SKF - Tri-State Bearing

Weatherly Index No. 310 Catalog 457010 September, 2005 Supersedes Catalog 457010 Dated September, 2002 SKF890 North State Street, Suite 200 Elgin, Illinois 601231-800-882-0008 ( )1-866-832-6753 (Canada)website: 2005 SKF Group All Rights ReservedPrinted in the Form No. 457010(Rev. 09/05)SKF Seal HandbookIncludes stock listing for shaft sizes up to 180 Featured products include: Speedi-Sleeve Shaft Repair Kits, Large Diameter Seals, Metric Seals,V-Ring products, Heavy-Duty DF , Hydraulic/Pneumatic, Scotseal , andPTFE Shaft Seals SKF Seal Handbook457010 ! " # " # $ % & ' &! ! % & ( )%* % % + ! , - . / , / " 0 $ 1 ) 2 ), 3 1 4 ' 0 54 " 5# 6 7 + 89 $ ) -' 6 1 - &!

developing new bonding techniques, but they also have ... Ethylene-Propylene (Lip code: M) Special compound for exposure to weather, water, ... Ethylene-acrylate-rubber AEM AEM Silicone-rubber Methyl-polysiloxane MQ MQ Vinyl-methyl-polysiloxane VMQ MVQ Phenyl-methyl-polysiloxane PMQ MPQ

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  Rubber, Bonding, Ethylene, Propylene

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Transcription of SKF Seal Handbook SKF - Tri-State Bearing

1 Weatherly Index No. 310 Catalog 457010 September, 2005 Supersedes Catalog 457010 Dated September, 2002 SKF890 North State Street, Suite 200 Elgin, Illinois 601231-800-882-0008 ( )1-866-832-6753 (Canada)website: 2005 SKF Group All Rights ReservedPrinted in the Form No. 457010(Rev. 09/05)SKF Seal HandbookIncludes stock listing for shaft sizes up to 180 Featured products include: Speedi-Sleeve Shaft Repair Kits, Large Diameter Seals, Metric Seals,V-Ring products, Heavy-Duty DF , Hydraulic/Pneumatic, Scotseal , andPTFE Shaft Seals SKF Seal Handbook457010 ! " # " # $ % & ' &! ! % & ( )%* % % + ! , - . / , / " 0 $ 1 ) 2 ), 3 1 4 ' 0 54 " 5# 6 7 + 89 $ ) -' 6 1 - &!

2 !4)8 ( ))8* - , 4, & 1 - % & 1 - -7 : 1 -$ : 1 -3 ! ; 1 ! ; 1 ! ; 1 ! ; & " , ! 7 & $ < 0 : < 0 7 ), 0 ) ; "$54 0 < $$+ 0 < 33 6 0 < ' &! ) ! ( ))8* 0 < '- 6 = 2 8 < '" ! >?> 0 < '7@ '$,4, & 0 ', 4, & ; = 0 < , 4, & < 0 : , 4, & < 0 3 ! ; 0 < A 0 6 : 1 ! ! "-#+ ;8+ ; + ! "$8 ; ; / & "3B ! 7'B 6 7 ! 7 ! ! " #1 ACCCCC aaaaatttttaaaaalllllog og og og og 457010457010457010457010457010 SeSeSeSeSeaaaaal hal hal hal hal handbookndbookndbookndbookndbookHow to use this catalogSize index: page index: page to find the correct product for their Seal Handbook contains an introduction, productsections, complete size listings (inches and millimeters),numerical index and seal design illustrations.

3 Allnumbers are listed two or more times - in product sizesequence and in SKF stock number for styles, types, materials/compounds, as well as typical operating conditionsappear in each basic seal or sleeve section. These willassist you in choosing the correct sealing device for type and style illustrations (pg. 364) include allavailable designs as well as optional and obsoletedesigns for referral purposes. Every design is notavailable in every features make the Seal Handbook your mostvalued tool in the selection, application, troubledetection and specification of SKF fluid sealing Seal Handbook contains complete product datafor the selection of SKF shaft seals, Speedi-Sleeves ,Wear Sleeves, Hydraulic/Pneumatic products, DefenderBearing Isolator, V-Rings and Heavy Duty DF (HDDF)seals.

4 Size listings for each style and type of seal orsleeve, material and compound selection guide,compound compatibility chart, and recommendedoperating conditions charts complement the productdata. Installation instructions and troubleshootingguidelines are also organized, the illustrative charts and detailedproduct data make the Seal Handbook a valuable toolfor industrial distributors, designers, engineers andanyone involved in the selection or specification of theseproducts. SKF s team of engineers and productmanagers have thoroughly reviewed and updated allthese tables and complete size listings enablefast selection of the correct shaft seal. Concisedescriptions and expanded technical data enable HELIX FROM AIR RANGE.

5 #. RANGE .140 - . RANGE .140 - . hal hal hal hal handbookndbookndbookndbookndbookCCCCC aaaaatttttaaaaalllllog og og og og 457010457010457010457010457010 The seal and its functionAxial mechanical - seals between static seals - gasketand a shaft rotates, it needs a bearingarrangement for smooth, effective operation. Whereverthere's a Bearing , you'll find a seal helping it to reach itsmaximum service life and reliability. In simplest terms ashaft seal is a barrier with four functions: 1) Retaininglubricants or liquids 2) Excluding contaminants 3)Separating fluids and 4) Confining are three basic types of seals:Static sealsStatic sealsStatic sealsStatic sealsStatic seals.

6 The function of a static seal is to create abarrier between non-moving surfaces. Typical exampleswould be a valve cover gasket or mechanical sealsAxial mechanical sealsAxial mechanical sealsAxial mechanical sealsAxial mechanical seals. These are face type seals inwhich the sealing contact is between radially mountedcomponents. One is usually stationary and seal contactpressure is applied by a spring "radial" sealsDynamic "radial" sealsDynamic "radial" sealsDynamic "radial" sealsDynamic "radial" seals. A dynamic radial seal creates abarrier between surfaces in relative motion. One is usuallystationary while the other rotates. The cross-sectionshown below identifies the most common parts of a shaftseal.

7 This is the primary type of seal described in the SKFSeal many designs, the primary sealing lip is held inposition by a garter spring. Generally, spring-loaded lipsare for retaining oil and non-spring-loaded are used forlow speed grease retention or excluding seal has a simple L-shaped shell with the sealingmaterial bonded to it. SKF is not only a pioneer indeveloping new bonding techniques, but they also havedeveloped and used an environmentally "friendly" water-based cement wherever seals have an inner shell to aid in protecting thelip from damage or distortion during installation. Thesealing lip should always point toward the material to garter spring keeps the lip in position.

8 In largediameter seals (over 8" or 200 mm) the spring is held by aSpring-Lock. To completely enclose the spring, Spring-Kover should be used as protection against contaminationor where the spring tends to pop-out during SKF seals have the patented Waveseal lip designthat pumps lubricant back to the oil cavity while holdingout contaminants, regardless of the direction of shaftrotation. The smooth molded lip is formed in a wave-likepattern that describes a wider path on the shaft todissipate heat and reduce seal on rotating shaftwith springCaseBearingSealingelement3 ACCCCC aaaaatttttaaaaalllllog og og og og 457010457010457010457010457010 SeSeSeSeSeaaaaal hal hal hal hal handbookndbookndbookndbookndbookMaterial and compound selection guideNote:Temperature ranges are based on sump temp.

9 When approaching temperature extremes contact SKFfor technical seals feature a variety of sealing materials. Eachone has specific characteristics. A lip code designatesmaterials in subsequent reference tables and (Lip code: R)Nitrile (Lip code: R)Nitrile (Lip code: R)Nitrile (Lip code: R)Nitrile (Lip code: R)Most commonly used sealing material. Nitrile is excellentwith most mineral oils and greases. Variations areavailable for use with fuels, industrial fluids and highlycompounded lubricants. Nitriles are recommended foroperation at temperatures from -40 to 250 F (-40 to121 C). Nitrile also works in dry running applications butonly for intermittent of environmental considerations, SKF useswater carried adhesives whenever possible.

10 Some waterbased fluids however, such as some cutting fluids, candestroy the nitrile/plain steel bond when operatingtemperatures exceed 150 F (66 C). The nitrile compounditself is not affected by the (Lip code: D) (Lip code: D) (Lip code: D) (Lip code: D) (Lip code: D)Offers superior resistance to abrasion. Duralip is SKF sspecial carboxylated nitrile compound developed forextreme abrasion resistance in applications where scale,sand, grit, dirt or other abrasive material is likely to collectat the point of shaft contact. Like nitrile, Duralip works indry running applications but only for intermittent characteristics of this special compound are similarto those of the standard (Lip code: H) (Lip code: H) (Lip code: H) (Lip code: H) (Lip code: H)SKF's special high temperature compound based onhydrogenated nitrile (HNBR) offers improved tensilestrength and resistance to heat, abrasion, hardening in hotoil, ozone and weathering effects.