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

Illustrate the process of insulation on pipe, Q. Illustrate the process of ...

Q. Illustrate the process of insulation on pipe? Factory fabricated sectional pipe insulation shall be applied in staggered joint construction and secured with wire loops or ba

Difference between, Difference between path function and point function

Difference between path function and point function

Show the water treatment unit, The de-oiled water from De-Oiling Unit enter...

The de-oiled water from De-Oiling Unit enters the HLS vessel for softening. The primary function of HLS is to remove the Ca and Mg hardness and bring the total hardness to less tha

Battery discharges frequently motorcycle problem, If Battery Discharges Fre...

If Battery Discharges Frequently Causes of Problem Remedy Electrolyte specific gravity NG Charging not done fully

Rankine Cycle, In a nuclear power plant saturated steam at 30 bar enters a ...

In a nuclear power plant saturated steam at 30 bar enters a h.p. turbine and expands isentrophically to a pressure at which its quality is 0.841. At this pressure the steam is pass

Robotics, Application of group technology point wise

Application of group technology point wise

Electronice , What is The Tunnel Diode and the Current Regulator Diode?

What is The Tunnel Diode and the Current Regulator Diode?

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