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

Working of torsion dynamometer, Can you explain the principal on which a to...

Can you explain the principal on which a torsion Dynamometer works ? Illustrate with details the evaluation involved in finding the power transmitted.

Design temporary storage, Q. Design Temporary Storage? It is sometimes ...

Q. Design Temporary Storage? It is sometimes acceptable to store drums temporarily on spill containment pallets. Each pallet should be capable of capturing the contents of at l

Explain the objectives of value engineering, OBJECTIVES OF VE: 1. To esta...

OBJECTIVES OF VE: 1. To establishing the monitoring value of the function of the product or services. 2. To identifying unnecessary cost or hidden cost in a product or services.

Over-hanging and cantilever beam - support reaction , Over-Hanging and Cant...

Over-Hanging and Cantilever Beam: Over-Hanging Beam: The beams on which one end or both ends are overhang are called as overhanging beam. 3. Cantilever Beam:

Determine directions of the wave vectors-double refraction, Double Refracti...

Double Refraction An unpolarized plane wave is incident from free space onto a quartz crystal (n e = 1.553 and n o = 1.544) at an angle of incidence 30°. The optic axis lies i

Describe brazing process, Brazing is a technique of joining two similar of...

Brazing is a technique of joining two similar of dissimilar metal pieces together by heating the surfaces and by using a non-ferrous filler metal having its melting point above 42

Shaft in parallel, SHAF T IN PARALLEL: SHAF T IN PARALLEL: The sh...

SHAF T IN PARALLEL: SHAF T IN PARALLEL: The shaft are in parallel when the driving torque is applied at the junction of shafts and resisting torque is at other ends of

Calculate stress to cause failure - creep parameters, Calculate stress to c...

Calculate stress to cause failure - Creep Parameters: From creep tests on 713 C alloy the constant C in Larson-Miller parameter is determined as - 85.75. In rupture test a spe

Matlab question please help me, The salary calculation method for employees...

The salary calculation method for employees of a company is as follows: (1) If the number of working hours exceeds 120 hours, an additional 15% will be issued for the excess part;

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