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

Probability, Airlines like to overbook their flights (this is a vibrant are...

Airlines like to overbook their flights (this is a vibrant area of research called yield management). It is estimated that 10% of the people who book their flight do not show up. H

CHEMISTRY, EXPALIN PREPARATION OF LYOPHILIC AND LYPHOBIC SOLS

EXPALIN PREPARATION OF LYOPHILIC AND LYPHOBIC SOLS

Find the stress developed in copper and steel, A steel rod of 20 mm diamete...

A steel rod of 20 mm diameter passes centrally through a copper tube of 50 mm external diameter and 40 mm internal diameter. The tube is closed at each end by rigid plates of negli

Thermodynamics, what are causes of hotness of a body?

what are causes of hotness of a body?

Car management system, Car Management System: You have been approached...

Car Management System: You have been approached by a Used Car Dealership who wishes to introduce an IT system to support their business. You are required to implement a protot

Introduction to advance manufacturing, INTRODUCTION In the morning se...

INTRODUCTION In the morning session there was a discussion about what the teachers are going to do in this week. Later the professor has shown power point presentation on int

Evaluate the crippling load, A cast iron hollow column, having 100mm extern...

A cast iron hollow column, having 100mm external diameter and 80mm internal diameter is used as a column of 2.4 m length. Using Rankine formula, calculate the crippling load, when

Magnitude of the load - hollow cast iron cylinder, Magnitude of the load - ...

Magnitude of the load - hollow cast iron cylinder: Q: A hollow cast iron cylinder 4 m long, 300 mm is the outer diameter, and thickness of metal 50 mm is subjected to central

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