Plain Bearing - CIP-JM Katalog

Laminate composite materialCIP bearings and wear pads

Catalog & engineering manual

Laminates compositesCIP Composite material is a laminated plastic mate-rial made by impregnating fabric with thermosetting resins. The physical and mechanical properties of all grades of CIP make them excellent bearing materials.

CIP composites offer design engineers an attractive, low cost alternative to the traditional materials used throughout industry for bearings, wear pads and other components.

CIP is only 1/6 the weight of steel, easily machined, has good dimensional stability and contains no harm-ful or toxic materials.

Advantages of using CIP composites Low maintenance, allows for reduction or elimina-

tion of wet lubrication. Excellent electrical insulation and non-magnetic

series are available. Excellent dimensional stability in water, corrosive

fluids and chemical solutions. Does not contain abrasive fillers (no calcium carbon-

ate fillers.) High load capacity and shock load resistant. Excellent mechanical strength. Long life, wear resistant. Non-abrasive to mating surfaces.

ApplicationsGeneral purpose bearing & wear pad applications, conveyor chain guides, electrical insulators, screw con-veyor hanger bearings, hydraulic cylinder wear rings.

Linear slides or pivot points. Scissor lifts, bottle and capping machinery.

Kiln cart bearings, wear strips on heat shrink seal-ing machines, bearings in steel and aluminum plants, high-temp hydraulic applications.

Ideal for pivoting and sliding applications where thin wall bearings are required.

1. CIP Wear Rings

2. CIP Bearings & Wear Pads

Cip series100 seriesMedium weave fabric with excellent mechanical strength.

200 seriesMedium weave fabric(100 series) crosswoven with PTFE for a low coefficient of friction. (Wrapped with series 100 material for walls over 1/4 inch.(6.35mm))

300 seriesHigh temperature fabric that can operate into the 400 (204 C) range while maintaining its high compressive strength.

400 seriesMedium weave fabric (100 series) cross woven with a PTFE textile for a low coefficient of fric-tion in thin wall bearings. No additional series wrap used.

Solid lubricantsAll above series of CIP Composites are available with solid lubricants incorporated. These can be graphite, MOS2, or PTFE evenly dispersed throughout the material. These materials are recommended for use where other forms of lu-bricants are undesirable, erratic or nonexistent. These solid lubricants can substantially improve performance where maintenance of wet lubrica-tion films is difficult.

CIP Material codes

Fabric SeriesPolyester = 1Poly & PTFE = 2Nomex = 3PTFE = 4

AdditiveNone = 0Graphite = 1Moly = 2PTFE = 3G & P = 4M & P = 5

ResinStandard = 1Marine = 2High Temp = 3Advanced = APerformanceAdvanced = BPerformance Plus

Example: Polyester cloth, molylubrication additive, polyester resinand Advanced Performance A =Series 121A

Advanced performance CIP material (example: 101a or 101b)CIPs Advanced Performance material incorporates an additive that strengthens the resin to enhance physical and mechanical properties. Dry lubricants may be used with this additive. Advanced Performance Plus combines this additive with a lubricating enhancer.

Physical & mechanical properties

Series 100 (dry running)Compressive strength

Perpendicular to Laminate ...................................................35,000 PSI ............................241 N/mm2

Perpendicular to Laminate (Breaking) ........................52,000 PSI ............................358 N/mm2

Compressive strength (parallel) to Laminate..........13,500 PSI ............................93 N/mm2

Tensile strength...................................................................................10,000 PSI ............................69 N/mm2

Tensile Modulus of Elasticity ..................................................470,000 PSI .........................3,240 N/mm2

Shear Strength .....................................................................................12,000 PSI ............................83 N/mm2

Flexural Modulus of Elasticity ................................................280,000 PSI .........................1,930 N/mm2

Hardness Rockwell M ...................................................................100 ..............................................100

Density ......................................................................................................045 #/cu in ...........................1.2g/cm3

Water Absorption .............................................................................

Tubes & sheets

MachiningCIP composite is readily machinable by con-ventional machining techniques and, as a gen-eral guide, may be treated as bronze but should be machined dry without coolant.

For turning, tungsten carbide-tipped tools should be used to obtain a fine finish. High-speed steel tools can be used for machining where accuracy below .005" (.12mm) is not required and for small quantity production.

CIP composites are completely non-toxic. It is advisable to use adequate dust extraction when machining CIP composites.

Special productsSpecial components can be manufactured to customers drawings from all grades of CIP. In addition to special wear pads and bearings, spherical bearings can be manufactured in CIP

Tubes & sheets CIP tubes & sheetsTubeMinimum bore .................3/8" (9.5mm)Maximum bore .................54" (1371mm)Standard lengths ..............16",24",32" (406mm), (609mm), (812mm)

SheetMinimum thickness ......1/16" (1.6mm)Maximum thickness .....3" (76mm)Standard size .......................16" x 24" (406mm x 609mm), to 32"x 60" (812 x 1524 mm)

Custom Sizes available upon request

CIP Tubes & Sheets

to solve misalignment problems. Spheri-cal bearing with metallic and CIP materials combined can also be produced. Parts requir-ing hex, square or irregular ID shapes can be produced from mandrels made with the appro-priate configuration. Please contact Columbia Industrial Products Technical Service depart-ment for special applications.

Standard CIP bearings (Material grade 121)Close-in on standard CIP bearing is 90-100%. Concentricity is held to .002" (.05mm) max. 1/8" (3.1mm) wall sections maximize load carrying capabilities and minimize any thermal expansion problems. This applies to both flat and round applications.

Standard laminate composite bearings

Material grade 121

Standard thrust washers

Cip wear padsCIP material is ideal for most wear pad applica-tions. Its high compressive strength, dimension-al stability and lubricity offer superior perfor-mance when compared to PTFE, UHMW, Cast Nylon or traditional Phenolics.

CIP can be provided from 1/16 to 3" (1.5mm to 76mm) thick. Material can be bonded to metal substrates or completely machined from sheet to your specifications. We invite you to submit your wear pad applications for consideration.

Installation of CIP bearingsCIP bearings should be fully supported over their loaded area, with uniform interference fit. A suitable lead-in chamfer should be provided in the housing, and drawing or pressing-in meth-ods should be used. Hammer blows should be avoided. It is recommended that bearings be retained by shoulders whenever possible.

CIP bearings close in between 90-100% of their interference fit. Flat components such as wear pads can be retained by countersunk screws and located by keeper plates where high lateral or shearing loads are anticipated.

CIP material can also be bonded using two-part epoxy resin adhesives, but manufacturers recommendations must be strictly followed, particularly with reference to pre-treatment of the surfaces. Loctite grade 648 or Permabond F246 are suggested adhesives. Where possible, contaminating or corroding liquids should be excluded from the bearing interface, unless they are being used as lubricants. Sealing will also help retain lubricants.

Mating surfaceThe surface finish of the mating component has a major effect on the performance of the bearing. Surface roughness should ideally be 32 microinches (0.8 Ra).

Suitable materials for shafts, thrust faces, etc., would be hardened steels or stainless. Hard chrome plated steel surfaces cause high wear rates under certain conditions, and burnishing or other surface finish treatments should be considered as an alternative.

The main criteria is that the mating surface should be free from cutting edges. Journals or thrust faces should be free of lubrication grooves or holes.

Coefficient of frictional values

LUBRICATION

Series 100

Series 200

GRADE

NONE WATER SOLUBLE OIL GREASE OIL

.18-.25 .01 .019 .013 .02

.18 .01 .019 .013 .02

.14 .01 .013 .013 .013

.05-.09 .01 .013 .013 .013

CIP 121

CIP 151

Electrical and magnetic propertiesAll grades of CIP material are excellent insulat-ing materials and may be used in many electri-cal applications.

As bearings and thrust washers CIP material is suitable for use in dynamos, electric motors, generators, etc.

As flat laminate, it can be used in heavy switchgear, transformers, insulating chassis and as general constructionmaterial.

Sliprings and other current transfer devices can also be manufactured from CIP.

CIP is non-magnetic and does not build-up static charges. These properties may often be exploited to advantage where interference with

Insulation Resistance (Megohms)BSS.2782 (Pt. 2) ...........................................................................2,000Electrical Strength at 194 F (90 C)BSS.2782 (Pt.2) Flatwise (Volts/mil) ...........................210Edgewise (kv/inch - kv/mm) ..............................................47 (1.85kv/mm)

Power Factor (1 M/c per sec) 0.021Permittivity (1 M/c per sec) 3.1

Hydraulic Wear Rings

Conditions: Standard CIP grades running against stainless steel mating surface. This data was generated by testing at these extreme speci-fications.

Bearing pressure: 2,000 PSI (13.7 N/mm2)Surface speed: 90 SFM (v =4.5 m/s)

Hydraulic Wear Rings

Thermal propertiesOperating temperature rangeStandard Series 100 & 200 grades ...........................................-40 / +250 F (121C)Series 300 grade ......................................................................................-40 / +400 F (204)

Linear coefficient of thermal expansion(68 O F - 212 O F) (20C - 100OC) per degree F

Standard Series 100 & 200 gradesNormal to laminate (bearing diameter) ................................6.7 x 10-5 (1.7 x 10-3mm)Parallel to laminate (bearing length) .......................................3.8 x 10-5 (9.6 x 10-4mm)

Series 300Normal to laminate (bearing diameter) ...............................3.0 x 10-5 (7.1 x 10-4mm)Parallel to laminate (bearing length) .......................................1.6 x 10-5 (4.0 x 10-4mm)

CIP Special Bearings

For operating temperatures exceeding Series 100 & 200 grades, use Series 300 to 400 F (204C) with a compressive strength of 35,000 PSI (241 MPA). Series 300 is available with the same solid lubricants as the standard grades.

As is common with all resin bonded fabrics CIP has a low thermal conductivity. Under normal circumstances frictional heat is removed via the mating metal surface. However, in cases where shafts or housings are conducting heat to the bearing assembly, the lubricant must be suf-ficient to remove both frictional and conducted heat.

The removal of frictional heat may be im-proved particularly in dry running applications, by using the housing as the main heat conduc-tor. The wall thickness of bearings should be kept to a minimum in order to improve heat dissipation.

Thermal expansion of CIP material is greater than that of most metal alloy bearings and the characteristic must be taken into account in

designs for higher temperature applications.For applications where there will be a temper-

ature change of > 60 F (15C), please consult with Columbia Industrial Products for correct running clearance.

Chemical and corrosion resistance

S = Satisfactory L = Satisfactory for limited service U = Unsatisfactory

Although the utmost care is taken to ensure the accuracy of data supplied and ad-vice or opinions given by the company and to maintain the highest possible quality of the Companys products and the materials used therein, the supply of such data, the giving of such advice or opinions and the sale of the Companys products are subject to the condition that in no circumstances is the Company to be under any liability for any injury, expense, loss or damage whatsoever arising or alleged to arise directly or indirectly as a result of the adoption of data supplied or advice or opinions given or the use to the Companys products except in so far as the Compa-nys conditions of sale expressly otherwise provided.

This table refers in particular to Series 100 CIP. CIP does not corrode and is unaffected by many solvents, inorganic solutions, fats and weak acids. It should be noted that water and chemical liquids often act as lubricants on the material giving low coefficients of friction and thereby eliminating the problems commonly encountered by metal bearings. Composites

are attacked by ketones, chlorinated solvents, strong alkalis, hot strong oxidizing agents.

For acidic and alkaline applications, refer to Columbia Industrial Products for recommenda-tions.

Satisfactory means that the material retains 50% or over of its original dry strength after immersion for at least six months.

Engineering manualThe information guide in this engineering sec-tion enables the designer to establish parameters which will provide maximum performance of a bearing in his application. Also we will provide assistance on material selection and fits.

During composite bearing selection there are many effects on the bearing to take into consid-eration. Composite bearings operate at different press fits and running clearances than bronze or other metal bearings. Composite bearings re-quire a heavier press fit to retain the bearing in the housing. The running clearances are larger in order to reduce heat buildup in the bearing.

Shaft material should be stainless steel or hardened steel. The minimum hardness sug-gested is Rockwell 45C. The surface finish should be from 8-32 microinches (0.2 - 0.8 Ra).

CIP Bearings & Wear Pads

Hard chrome plating may cause premature wear and should be avoided. Holes in the shaft for greasing should also be avoided as the edge of the hole could cut the bearing.

The bearing housing should have a chamfer for lead-in. The installer should use a press-in or Drawin method. Do not hammer or the bearing could be damaged.

Bearing wall thickness is very important. The correct wall thickness gives the bearing the proper strength to stay in the housing. Use table E as a guide for wall thickness.

The following calculation page and tables will guide you through sizing a composite bearing. The first step in sizing a bearing is to gather the correct information. Use the Application Ques-tions sheet for this task.

Application questions

Bearing size calculations

Thermal expansion of CIP compositesWhen composites are used in elevated temperatures they expand. This expansion is seen as a reduc-tion in the bore diameter of a bearing installed in a housing. In sizing a bearing we must add ad-ditional clearances to the bore so the shaft will run free at the elevated temperatures. The following is an example of this calculation.

Series 100 & 200 are used up to 200F (94C) continuous. Above 200F (94C), use CIP Series 300. The coefficients of linear expansion follow.Linear expansion for Series 100 & 200 = .00006" (.0015mm)/deg over 68F (20C)Linear expansion for Series 300 = .00003" (.0007mm)/deg over 68F (20C)

Calculations for bearings operating above 68F (20C)Assume we are using CIP 100 Series materialAssume a bearing running at 200F (94C)Assume a wall thickness on .250 (6.35mm)

Calculate the delta T, or difference between 68F (20C) and the 200F (94C)200F (94C) minus 68F (20C) equals 132 (55C) of temperature changeThe formula to determine additional clearance is:2 x Wall Thickness x Coefficient x Delta T = Clearance2 x .250 (6.35mm) x .00006 (.0015mm) x 132F (56C) = .0039" (.099mm)

Cutting Angles of TurningTop Rake - 0 to 6 Side Rake - 5 to 8 Front Rake - 4 to 5

Speeds for CuttingNormal Surface finish 22 to 26 feet/second (6.7/7.9 m/s)

Speeds for FeedFirst pass/roughing .015 to .035 inches per revolution (.38mm/.88mm)Last pass/finishing .010 to .015 inches per revolution (.38mm/.88mm)

Machining cip compositesCIP Composite materials are easily machined by using conventional tooling and methods. You can use the same methods as you would for Aluminum or Brass. CIP Composites are machined dry. A dust mask and or work area suction is suggested.

For lathe work, carbide or diamond tipped tools can be used to generate a fine surface finish. Diamond tool tips do not produce as much heat when cutting and are suggested for best results. CIP Composites are 100% bearing material with no fillers.

Sample application questions

32 microinches (0.8 Ra) or Better

Sample bearing calculations

Johnson Metall is Scandinavias largestproducer of plain bearings, bars, tubesand castings in bronze. Productionfacilities can be found in Swedenand Finland, sales company inDenmark and Norway.

Headquarters is located in rebro,Sweden. Over two hundred people workhere and accounted for sales of SEK 250million in 2005.

Altogether, the JM Group employsabout 300 people (2005) and has a salesof SEK 360 million (2005).

Johnson Metall AB is a wholly ownedsubsidiary of Hexagon AB.

HEXAGON AB

JOHNSON METALL ABSweden

Scandinavias Largest

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ition

620

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Head office rebroStlgatan 15P.O. Box 1513SE-701 15 REBRO, SWEDENPhone +46 19 17 51 00Fax +46 19 14 83 40E-mail: [email protected]: www.johnson-metall.com

DenmarkJohnson Metal A/SNyholms All 20DK-2610 RDOVRE, DENMARKPhone +45 36 70 00 44Fax +45 36 70 80 50E-mail: [email protected]: www.johnson-metall.com

FinlandOY Johnson MetallTurkkirata 14FI-339 60 PIRKKALA 6, FINLANDPhone +358 33 42 77 00Fax +358 33 42 77 28E-mail: [email protected]

NorwayJohnson Metall ASKatfos NringsparkN-3360 GEITHUS, NORWAYPhone +47 32 78 32 00Fax +47 32 78 32 01E-mail: [email protected]: www.johnson-metall.com

Teta

b,

reb

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HexagonPolymers

HexagonEngineering

OY JOHNSON METALLFinland

JOHNSON METALL ASNorway

JOHNSON METAL A/SDenmark

MeasurementTechnology

Hexagon

Johnson Metall is Scandinavias largestproducer of plain bearings, bars, tubesand castings in bronze. Productionfacilities can be found in Swedenand Finland, sales company inDenmark and Norway.

Headquarters is located in rebro,Sweden. Over two hundred people workhere and accounted for sales of SEK 250million in 2005.

Altogether, the JM Group employsabout 300 people (2005) and has a salesof SEK 360 million (2005).

Johnson Metall AB is a wholly ownedsubsidiary of Hexagon AB.

HEXAGON AB

JOHNSON METALL ABSweden

Scandinavias Largest

Ed

ition

620

05

Head office rebroStlgatan 15P.O. Box 1513SE-701 15 REBRO, SWEDENPhone +46 19 17 51 00Fax +46 19 14 83 40E-mail: [email protected]: www.johnson-metall.com

DenmarkJohnson Metal A/SNyholms All 20DK-2610 RDOVRE, DENMARKPhone +45 36 70 00 44Fax +45 36 70 80 50E-mail: [email protected]: www.johnson-metall.com

FinlandOY Johnson MetallTurkkirata 14FI-339 60 PIRKKALA 6, FINLANDPhone +358 33 42 77 00Fax +358 33 42 77 28E-mail: [email protected]

NorwayJohnson Metall ASKatfos NringsparkN-3360 GEITHUS, NORWAYPhone +47 32 78 32 00Fax +47 32 78 32 01E-mail: [email protected]: www.johnson-metall.com

Teta

b,

reb

ro

HexagonPolymers

HexagonEngineering

OY JOHNSON METALLFinland

JOHNSON METALL ASNorway

JOHNSON METAL A/SDenmark

MeasurementTechnology

Hexagon

Johnson Metall is Scandinavias largestproducer of plain bearings, bars, tubesand castings in bronze. Productionfacilities can be found in Swedenand Finland, sales company inDenmark and Norway.

Headquarters is located in rebro,Sweden. Over two hundred people workhere and accounted for sales of SEK 250million in 2005.

Altogether, the JM Group employsabout 300 people (2005) and has a salesof SEK 360 million (2005).

Johnson Metall AB is a wholly ownedsubsidiary of Hexagon AB.

HEXAGON AB

JOHNSON METALL ABSweden

Scandinavias Largest

Ed

ition

620

05

Head office rebroStlgatan 15P.O. Box 1513SE-701 15 REBRO, SWEDENPhone +46 19 17 51 00Fax +46 19 14 83 40E-mail: [email protected]: www.johnson-metall.com

DenmarkJohnson Metal A/SNyholms All 20DK-2610 RDOVRE, DENMARKPhone +45 36 70 00 44Fax +45 36 70 80 50E-mail: [email protected]: www.johnson-metall.com

FinlandOY Johnson MetallTurkkirata 14FI-339 60 PIRKKALA 6, FINLANDPhone +358 33 42 77 00Fax +358 33 42 77 28E-mail: [email protected]

NorwayJohnson Metall ASKatfos NringsparkN-3360 GEITHUS, NORWAYPhone +47 32 78 32 00Fax +47 32 78 32 01E-mail: [email protected]: www.johnson-metall.com

Teta

b,

reb

ro

HexagonPolymers

HexagonEngineering

OY JOHNSON METALLFinland

JOHNSON METALL ASNorway

JOHNSON METAL A/SDenmark

MeasurementTechnology

Hexagon