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

Law of Parallelogram of Forces, To finding ? in Law of parallelogarm forces...

To finding ? in Law of parallelogarm forces We take Q sina(Along Vertical Side) & Q cosa(Along Horizontal Side) I didn''t get that point Q sina & Q cosa how it derived? Can you

Thermodynamic equilibrium - thermodynamics, Thermodynamic equilibrium - The...

Thermodynamic equilibrium - Thermodynamics: Equilibrium is the state of a system in which the state does not undergo any change in itself with the passage of time without the

Original hodgkin-huxley model, 1. Plot the functions x1 and x as functions...

1. Plot the functions x1 and x as functions of voltage 2. Assume that you hold the membrane potential V at -120 mV until the system reaches equilibrium (i.e. until dx=dt = 0, w

Compund cylinders, A compound cylinder is made by shrinkage one cylinder of...

A compound cylinder is made by shrinkage one cylinder of 120 mm external diameter and 20 mm wall thickness. The shrinkage allowance , based on radius , is 0.025 mm. If both cylinde

What is clad plate and overlay welding, Q. What is Clad plate and overlay w...

Q. What is Clad plate and overlay welding? Strip back cladding on clad plate a minimum of 5 mm (3/16") from the edges of weld preparation before welding on the backing plate.

Mass flow rate - thermodynamics, Mas s Flow Rate (m ): In absence of ...

Mas s Flow Rate (m ): In absence of any mass getting stored system we can write; Mass flow rate at inlet = Mass flow rate at outlet That is, m f1  = m f2 as m f  = d

Types of coated electrodes, TYPES OF COATED ELECTRODES Following are the ...

TYPES OF COATED ELECTRODES Following are the types of coated electrodes: a. Cellulosic electrodes b. Rutile electrodes c. Iron powder electrodes d. Low hydrogen e

Balancing, A shaft carries three pulleys A,B and C. the pulleys B and C bei...

A shaft carries three pulleys A,B and C. the pulleys B and C being 1.2m and 2.1m from A. the pulleys are out of balance to the extent of 0.03, 0.05 and 0.04kg.m respectively and ar

Objectives- computer algorithm for on-line scheduling , Objectives After...

Objectives After studying this section, you should be capable to understand: Cell aspects of scheduling, Conventional priority rules, Newer approaches to on line

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