Bearing bronzes, Mechanical Engineering

Assignment Help:

Bearing Bronzes

This is the copper-tin alloys along with small additions of another constitution. Beneath conditions of heavy load and conditions of severe service, bronzes are mostly of great advantages. Therefore, they possess a high resistance to impact loading and, are mostly employed in locomotive and rolling mills bearings. Though, they get heated up fast as compared to another type of bearing materials, as like: babbitts. Bronze lined bearings are easily eliminated and finished bushings are usually available in stocks. Some of the bronzes that are widely employed are described in Table no.22.

                                                                           Table no.22: Bearing Bronzes

 

Bronze and

SAE Number

 

Composition (% )

Mechanical Properties

 

Application

UTS N/mm2

YS N/mm2

Elongation

%

Leaded gun metal, 63

Cu 86-89, Sn 9-11, Pb 1-2.5, P 0.25

max. impurities 0.5 max.

 

200

 

80

 

10

Bushing

Phosphor bronze, 64

Cu 78.5-81.5, Sn 9-11, Pb 0.05-0.25, Zn 0.75

max. impurities 0.25 max.

 

167

 

80

 

8

Heavy loads

Bronze backing for lined bearings 66

Cu 83-86, Sn 4.5-6.0, Pb 8-10, Zn 2.0, impurities 0.25 max.

 

167

 

80

 

8

Bronze backed bearings

Semi-plastic bronze, 67

Cu, 76.5-99.5, Sn 5-7,

Pb 14.5-17.5, Zn 4.0 max., Sb 0.4 max., Fe 0.4 max., impurities 10.0 max.

 

 

133

 

 

-

 

 

10

Soft and good antifriction properties


Related Discussions:- Bearing bronzes

General electric research laboratory, General Electric Research Laboratory:...

General Electric Research Laboratory: Philip Kennicott joined the General Electric Research Laboratory in the year 1961 where he made contributions in the fields of x-ray crys

What is column and strut with example, Explain following a) Type of bea...

Explain following a) Type of beam b) What is column and strut with example. c) Type of load d) Define S.F. and B.M diagram. e) Write crippling load formula for a

Two wheeler, how to adjust the motorcycle clutch play

how to adjust the motorcycle clutch play

Hydrostatic law for incompressible and compressible fluid, Illustrate Newto...

Illustrate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. Describe the effects of temperature on viscosity of water and that of air? Discuss hyd

Arc welding power sources classify-output characterstics, ARC WELDING POWER...

ARC WELDING POWER SOURCES CLASSIFICATION:OUTPUT CHARACTERSTICS The output characteristic of welding power source is a funct ional relationship between output voltage and load

Working of a four-stroke engine , Working of a Four-stroke Engine: To unde...

Working of a Four-stroke Engine: To understand the working of a four-stroke motorcycle engine, the whole operation can be divided into four parts, known as strokes. The strokes ar

What do you mean by alloys, Q. What do you mean by Alloys? Metallic mat...

Q. What do you mean by Alloys? Metallic materials that contain alloying elements, including chromium (Cr), cobalt (Co), Columbium or niobium (Cb or Nb), copper (Cu), iron (Fe),

Engine, as diesel engine gives more milege than petrol engine then why we a...

as diesel engine gives more milege than petrol engine then why we are using petrol engine..

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd