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

Find out the deflection at mid-span - cantilever beam, Find out the deflect...

Find out the deflection at mid-span - cantilever beam: A double overhanging beam of 12 m length rests on supports symmetrically, 8 m apart. A load of 80 kN acts at one free en

Characteristics of the secondary circuit, Characteristics of the secondary ...

Characteristics of the secondary circuit The dimensions of the secondary circuit in secondary loop determine to a large extent, the performance of these machines. The secondary

Ancillary railway structures, Ancillary Railway Structures: Overhe...

Ancillary Railway Structures: Overhead Transmission Lines When the line is electrified, the electric loco has to pick up the electric current from a cable that runs

Computerized scheduling and control manufacturing systems, Characteristics...

Characteristics Computerized Scheduling And Control Manufacturing Systems Introduction This section illustrates the unique characteristics of CCS or Computer Controlled Sc

Gears, what is the practical application of worm and worm gear

what is the practical application of worm and worm gear

Calculate all the mass-normalised modal vectors, The body, suspension and e...

The body, suspension and engine mounting system of a vehicle may be idealised as a three degree of freedom system consisting of a bar of mass 1400 kg and the centre of mass at G, 1

Chemical machining., chemical milling is used in aircraft plant to create p...

chemical milling is used in aircraft plant to create pockets in wing sections made of an aluminium alloy. the starting thickness of one work part is 20 mm.a series of rectangular s

Flange assembly with bolt elongation measurement, Q. Flange Assembly with B...

Q. Flange Assembly with Bolt Elongation Measurement? Bolt elongation measurement may be used, with COLT engineering approval, at flanges where Hydraulic Bolt Tensioners are imp

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