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

MOTORSPORT VEHICLE CONSTRUCTION, MODIFICATIONS REQUIRE FOR A ROAD CAR TO EN...

MODIFICATIONS REQUIRE FOR A ROAD CAR TO ENTER A HILL CLIMB

State the categorise of foundations, State the Categorise of foundations ...

State the Categorise of foundations Categorise special foundations into three types based on i)  Demands arising from uncommon loading or environmental conditions, ii)  D

Electron beam welding(ebw )-effect of process parameters, EFFECT OF PROCESS...

EFFECT OF PROCESS PARAMETERS High voltage gives high velocities in the electron beams. The mutual repulsion effects in the constituent electrons will be less marked at high vel

Handling tools and equipment for skid, Q. Handling tools and equipment for ...

Q. Handling tools and equipment for skid? Lifting or pulling and provisions for transportation of skid shall be in accordance with GS-904-0103, other relevant parts of contract

Som, a steel bar is

a steel bar is

Data translation requirements, Data translation requirements: An appar...

Data translation requirements: An apparent indication that CAD data translation is now an accepted part of the complex mechanical design world is the emerging trend towards bu

What will be the alteration of pressure, A copper tube 1.2 m long, has 80mm...

A copper tube 1.2 m long, has 80mm internal diameter and 2 mm wall thickness. It has closed ends, and is filled with water under pressure. What will be the alteration of pressure i

Determine the machining time in milling operation, Determine the Machining ...

Determine the Machining Time in Milling Operation An HSS slab mill of 100 mm diameter and 150 mm width is used on a Horizontal milling machine to mill C50 steel. The milling c

Compute the total drag force on the plate , A uniform air stream with veloc...

A uniform air stream with velocity U = 10m/s flows over a flat plate of length 10 meters in the first meter the boundary layer is laminar but beyond this point boundary layer is fu

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