plain bearings and special turned parts carobronze

CARO Plain Bearings and Special Turned Partsturned, milled, ready for assembly

We produce

all solid plain bearings made to order - ready for assembly -

Ø to DIN ISO 4379 (supersedes DIN 1850 part 1)Ø to DIN 1850Ø to your drawingØ to your specificationØ in all quantitiesØ in almost all dimensionsØ from most bearing materials

The made to order production of all solid plainbearings permits us to be particularly respon-sive to your wishes regarding execution,tolerance and material selection.

We recommend, to design CAROBRONZE®

Plain Bearing Bushes particularly thin-wal-led and narrow and in this way to save mate-

rial, costs and space.

We offer you our advice

with regard to all questions about plainbearings such as bearing calculation,dimensioning, material selection, etc.

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Our bearing materials:

Plain bearings of

CAROBRONZE®

l for heavy-duty requirements l excellent antifriction propertiesl wear-resistant

Ø Alloy composition of CAROBRONZE®

Reference analysis Sn: ca.08,5 %P: 0ca. 0,3 %Cu: Rest

The admissible impurities are lower by a power of 10than the values specified for CuSn8 and CuSn8P inDIN 17662 or DIN ISO 4382 part 2 respectively.

The excellent antifriction properties of CAROBRONZE® are not only due to the high purity butalso to the alloy composition (high phosphorus and tin content) and the production procedure.The combination of all these features result in the advantage of CAROBRONZE® over similarbearing materials which have the same material designation in DIN or DIN ISO.

CAROBRONZE® represents the highest quality CuSn8P Bronze.

Ø Mechanical and physical properties of CAROBRONZE® (reference values)

l CAROBRONZE®

Bars acc. to DIN EN 12163 CW459K

R390

390

-

35

260

H160

-

160 - 190

-

-

R450

450

-

18

280

R550

550

-

10

430

R620

620

-

4

550

H125

-

125 - 160

-

-

Modulus of elasticity

Longitudinal expansion coefficient

Thermal conductivity

Density

Physical properties CAROBRONZE®

kN/mm2

10-6/K

W/mK

kg/dm3

115

17

59

8.8

Mechanical properties Tubes acc. to DIN EN 12449 CW459K

Tensile strength

Brinell hardness

Elongation

Proof stress

N/mm2

2.5/62.5

%

N/mm2

RmHB

A5Rp0.2

min.

min.

min.

R460

460

-

30

280

H180

-

min. 175

-

-

R550

550

-

12

480

R620

620

-

5

540

H130

-

125 - 160

-

-

H165

-

160 - 190

-

-

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Mechanical properties

Tensile strength

Brinell hardness

Elongation

Proof stress

N/mm2

2.5/62.5

%

N/mm2

RmHB

A5Rp0.2

min.

min.

min.

CC496K

min. 200

min. 8

min. 65

min. 90

77

18.8

63

9.1

7


2.0978

> 730

> 5

210

> 440

125

17

40

7.4

5

CW308G

min. 750

min. 10

ca. 210

ca. 450

125

17

40

7.4

5

2.0855

min. 640

min. 10

ca. 190

min. 590

140

17

160

8.8

19

CW111C

min. 640

min. 10

ca. 180

ca. 620

140

17

160

8.8

19

2.0550

> 590

> 10

160

250

93

20.4

63

8.1

7.8

CW713R

min.590

min. 10

ca. 160

ca. 320

93

20.4

63

8.1

7.8

2.0490

min. 490

min. 15

ca. 150

min. 290

108

19.2

71

8.4

8.9

CW708R

min. 530

min. 12

ca. 150

ca. 330

108

19.2

71

8.4

8.9

2.0966

> 640

> 15

180

> 270

125

17

50

7.5

6

CW307G

min. 680

min. 10

min. 180

min. 480

125

17

50

7.5

6

Material number

Tensile strengthRm N/mm²

ElongationA5 %

Brinell hardnessHB 2.5 / 62.5

Proof stress Rp0.2Rp0.2 N/mm²

Modulus of elasticityE kN/mm²

Thermal expansion coefficientα 10-6/K

Thermal conductivity W/(m.K) λ bei 15°C

Densityς kg/dm³

Electrical conductivityχ m/Ω.mm²

l A survey of further bearing materials (reference values)

Mechanical and physical properties*Ø Wrought materials

Superseded standarddesignation

CuZn40Al2 CuZn31Si1 CuAl10Ni5Fe4 CuAl11Ni6Fe5 CuNi2Si

CuZn37Mn3Al2PbSi CuAl10Ni5Fe4 CuNi2SiCuAl11Fe6Ni6CuZn31SiCurrent standard designation

Ø Cast materials

CC493K

min. 260

min. 12

min. 70

min. 120

107

18.5

64

8.8

7.5

2.1052

> 280

> 7

90

> 150

100

18.5

54

8.4

6.2

CC483K

min. 300

min. 6

min. 90

min. 150

100

18.5

54

8.4

6.2

2.1182

> 220

8

65

100

77

18.8

63

9.1

7

2.0975.04

> 700

> 13

160

> 300

120

17

60

7.6

4 - 6

CC333G

min.650

min. 13

ca. 150

ca. 280

120

17

60

7.6

4 - 6

2.1090

> 260

> 12

70

120

107

18.5

64

8.8

7.5

Material number

Tensile strengthRm N/mm²

ElongationA5 %

Brinell hardnessHB 2.5 / 62.5

Proof stress Rp0.2Rp0.2 N/mm²

Modulus of elasticityE kN/mm²

Thermal expansion coefficientα 10-6/K

Thermal conductivity W/(m.K) λ bei 15°C

Densityς kg/dm³

Electrical conductivityχ m/Ω.mm²

Superseded standarddesignation

* Reference values

GC-CuAl10Ni CuSn7ZnPb CuSn12 CuPb15Sn

CuSn7Zn4Pb7-C CuSn7Pb15-CCuSn12-CCuAl10FeNi5-CCurrent standard designation

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l CAROBRONZE®-P Bushesl the cost-efficient alternative

The outside diameter of the bushes is drawn to a precision press-fit. There is no machining ofthe outside diameter.The bush is ready for press fitting into an H7 seating bore.

PRESS FITTING REAMING

Ø Applications of CAROBRONZE®-P Bushes:

- Plain bearing bushes in rollers and running wheels- Plain bearing bushes in belt tensioning pulleys and gearwheels- Connecting rod bushings, rocker arm bushings, spring bushings

and many more applications (in which the bushes - individually arranged - need not be in preci-sion alignment with other bushes, so that the small wall thickness deviation (max. ± 5 %) causedby cold drawing is without significance).

Finished bore ø in mm

Bush or tubeø

in mm


Bush or tubeø

in mm


Bush or tubeø

in mm

10

12

14

9.8/16 P

11.8/16 P11.8/18 P

13.8/18 P

15

16

20

14.8/18 P

15.8/20 P

19.8/24 P19.8/25 P19.8/26 P

25

30

24.8/30 P

29.8/35 P29.8/36 P29.8/40 P

The bushes can be supplied ready for press fitting in the desired length.

CAROBRONZE®-P Bushes can also be supplied with a machining allowance on the inside dia-meter. By boring the bushes to the finished diameter a bearing bore that is concentric to the O/Dis achieved. Please, consult us for minimum quantities.

Ø Dimensions of P-Bushes available from stock (with reaming allowance)

We recommend

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For various applications we supply:

l CARO - Bearing Bushes, precision-drawn

Benefit from the advantages of these cost-efficient bearings.


l Mating material / Shaft material

Application instructions

- cut from a precision-drawn CAROBRONZE®

Tube, ready for assembly with-out rework -

By our special cold forming procedure wecan achieve diameter tolerance up to thequality IT 8 - dependent on diameter andwall thick-ness.!

Because of the use of very wear-resistant base materials for the CARO Plain Bearings thehardness of the shaft material must also be specified in such a way that a hardness ratio of thebase material to the mating material of 1 : 3 is guaranteed.

Hard chrome plated and also hard nickel plated surfaces are well suited to use as mating surfa-ces and besides the desired hardness also provide additional corrosion protection. The platingthickness should amount to approximately 30 to 50 µm and the hardness should reach min. 56 HRC.

Particularly for the highly loaded CARO Plain Bearings the surface quality of the shafts is criticalwhen considering the coefficient of friction and the magnitude of the wear to be expected. Therefore, in most cases Rz roughness values of < 3 µm are required and, in general, the lowerthe Rz value, the lower the resulting coefficient of friction.

l Coefficients of friction

The coefficients of friction of plain bearings depend on a number of parameters. These are forexample the surface qualities of the friction pairing, the temperature, the surface pressure andabove all type and quantity of the existing lubricant. Generally it is true that the arising coefficientof friction, just as the admissible surface pressure, is not a material parameter but a system para-meter which falls with increasing surface pressure after the running-in phase and rises withincreasing temperature, higher speed and higher Rz roughness values.

For grease-lubricated plain bearings it is recommended not to use for a calculation coefficientsof friction below 0.1. In the case of hydrodynamic running, oil-lubricated plain bearings coeffi-cients of friction below 0.01 are to be expected.

l Design / Determination / Calculation

As a special service we offer you our help and support for the selection, design and determina-tion of the CARO Plain Bearings and Bearing Elements.

Please return a copy of the completed questionnaire overleaf including a drawing, if possible.

The more details and information you are able to provide the greater the attention we can giveto your special plain bearing problem.

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QUESTIONNAIREfor the design and calculation of CARO Plain Bearings

Requesting company: ................................................................................................................................................

Responsible/dept.: .....................................................................................................................................................

Phone/Fax: .................................................................................................................................................................

Application:

Type of machine/device: .................................................................................................................................

q drawing/draft enclosed: .................................................................................................................................

Bearing/type/design: .................................................................................................................................

q drawing/draft enclosed: .................................................................................................................................

Dimensions: (with tolerances) Shaft:

Bearing:inside-Ø .................mm Tol. .................... shaft-Ø .................mm Tol. ....................

outside-Ø .................mm Tol. .................... material ................................................................

width .................mm Tol. .................... surface roughness Ra/Rt/Rz......................um

tempfer ................................................................(hardened, nitrated, chromium plated a.s.o.)

hardness .............................................................

Housing: design ...................................................

material ...................................................

dimensions ...................................................

Working conditions:

Bearing load radial .......................N static, rotating, changing, swelling, pulsating

axial .........................N

Operating speed: Direction of rotation:

n=........................1/min q constant q changing q oscillating

q rotating shaft q rotation bearing q operating time ...................................s/min/h

q continnous q intermittend q rest period ...................................s/min/h

q stroke movement q pivoting angel +/- ....... °

Stroke.........mm q frequence ...................1/s

Temperature:

bearing temperature .........°C housing temperature ..........°C ambient temperature .........°C

Special ambient influences: ...................................................................................................................................e.g. dust, juminity, corrosive atmosphere

CARO-bearing in contact with q lubricant ...............................................................................

q pumping medium..................................................................

q others ...................................................................................

Further details / Requirements: ..............................................................................................................................

....................................................................................................................................................................................

....................................................................................................................................................................................

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Diecasting Components for Light Metal Diecasting Machines

From the cobalt- and beryllium-free high-performance material

CARODUR-DC / CuNi2Si + Cr

specially developed for aluminium diecasting, we produce bushes and pistons made to order toyour drawings.

Ø Pistons and sleeves in cold chamber machines for aluminium diecastingØ Pistons for one-piece or split loading chambers

All pistons and sleeves ready to be installed are pro-duced to order according to customers' drawings (alsospecial designs) in all quantities. Our precision produc-tion also permits the manufacture of special pistonswith piston lengths of L > 1.5 x D (D = piston diameter).

l Application

Ø Very good antifriction propertiesØ High wear resistanceØ Constantly high thermal conductivity over the total temperature rangeØ Long life and high shot numbers with adequate cooling

l Advantages

from CAROBRONZE®, CARODUR, CAROTHERM B, as well as materials to your specifications

We would be glad to submit you our offer for yourdrawing parts, which is without engagement foryou.

Valve Guidesmanufactured according to your requirements

Ø Passenger car and motorcycle engines

Ø Large diesel enginesØ Racing engines

l Application

Ø Best antifriction propertiesØ High wear resistanceØ High thermal conductivity Ø Components ready for installation

l Advantages

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Quality

ENZESFELD-CARO METALLWERKE AG is aleading manufacturer of semi-products and finalproducts in copper alloys and works to a Quali-ty Management System to ÖNORM EN ISO9001 which was certified for the first time in1993 by ÖQS (Austrian Association for Certifi-cation of Quality and Management Systems).

With the CARO Plain Bearings and Bearing Ele-ments ECM offers you - from the material to theCARO Plain Bearing ready for installation - pro-ducts which are all produced in one plant withconstantly outstanding quality.

Special Parts, Sub-assemblies manufactured according to your drawings and specification

Ø Copper and copper alloysØ Aluminium and aluminium alloysØ Steel

l Materials

Ø Turned parts, such as axles, screws, nuts, boltsØ Sub-assemblies

l Executions

Ø Corrosion-resistant special screw from CARODUR-CuNi2Si

l Example

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plain bearings and special turned parts carobronze

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