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06-04-2011, 10:26 AM
Post: #1
NATIONAL ENGINEERING INDUSTRIES LTD.,JAIPUR
Presented by:
Naveen Kumar Dubey


.ppt  Presentation2 (4).ppt (Size: 2.3 MB / Downloads: 416)
A PRESENTATION ON SUMMER TRAINING 2010
 NATIONAL ENGINEERING INDUSTRIES LTD.,JAIPUR
 INTRODUCTION TO NEI

 Founded in year 1946 by renowned industrialist Late Shri B.M. Birla under the name of “NATIONAL BEARING COMPANY LIMITED”.
 With a modest start of 30,000 bearings in 19 sizes, the first bearing was manufactured in 1950.
 This figure has increased to manufacturing of nearly 3.8 million bearings per month in over 500 different sizes ranging from 6mm bore to 1300mm outer diameter.
 Company has the capacity to manufacture bearings up to 2000mm outer diameter.
 The name of the company changed to “NATIONAL ENGINEERING INDUSTRIES LIMITED” in 1958 after getting industrial licenses for other vital industries and manufacturing of Roller Bearing Axle Boxes for Railway Rolling Stock, Steel Balls, Tapered Roller Bearings, Spindle Inserts etc.
INTRODUCTION TO NEI
 Today, NEI is manufacturing wide variety and range of bearings such as Ball Bearings, Steel Balls, Tapered Roller Bearings, Cylindrical Roller Bearings & Axle Boxes for Railway Rolling Stock including Spherical Roller Bearings, Cartridge Tapered Roller Bearings and Large Diameter Bearings in separate fully equipped factories.
DEPARTMENTS OF NEI
 MY DEPARTMENT WAS………
 HEAT TREATMENT DEPARTMENT
 MY PROJECT WAS………….
 BEARING MATERIAL
ELEMENT AMOUNT
 Manganese - 0.25 to 0.35
 Silicon - 0.025 to 0.35
 Sulphur - 0.025 max
 Phosphorous - 0.025 max
 Nickel - 0.025 max
 Copper - 0.35 max
 Molybdenum - 0.10 max
 RAW MATERIAL
Balls - Ni-Cr steel wire
Rollers - High carbon chrome steel rods
Cage - Brass and mild steel
PARTS OF BEARING
 Outer Ring
 Inner Ring
 Rolling Elements
 Cage
STEPS OF HEAT TREATMENT
 HARDENNING TEST

OVALITY CHECKING
 Ovality checking is done to long diameter and thin width outer race of bearing.
 Ovality checking is done automatically by ovality checking machine.
 This machine checks the ovality of outer race and then put correct one to one side , wrong one to other side.
 Now these outer race of bearing which are found oval in shape again taken to dial gauge for checking the ovality reading.
 After this nails are put in between the outer race.
 And again these outer race’s are put into different furnace.
 After sometime all outer race’s are taken out and get cool.
 This is how the ovality of outer race of bearing is removed.
 PROCESS TO OUTER AND INNER RACE
ASSEMBLY SECTION
Cage Rivet Outer Ring Inner ring Balls
Put Inner In Outer
Insert cage
Insert Balls
Put under Riveting Machine
Riveting
Washing Of Bearing
DE Magnetizing
Clearance Testing
Application Anti Rust
Packing of bearing
Ready to Dispatch
19-06-2012, 03:36 PM
Post: #2
RE: NATIONAL ENGINEERING INDUSTRIES LTD.,JAIPUR
NATIONAL ENGINEERING INDUSTRIES LTD JAIPUR


.pptx  NATIONAL ENGINEERING INDUSTRIES LTD.pptx (Size: 340.23 KB / Downloads: 139)
NEI LTD

1946 Company founded by B.M.Birla as “National Bearing Company ” (NBC)
1950 production started
1958 name changed “National Engineering Industries Ltd.”
3500 workers and members of staff
ISO – 9001 certified
ISO – 14001 certified
QS – 9000 certified
“Award for excellence” in 2001-02 from MICO Bosch Group
“DEMING PRIZE 2010”

NEI PRODUCTS

Ball Bearings
Radial Ball Bearing
Angular Contact Bearing
Self Aligning Two Row Bearing
Taper Roller Bearing
Single & Double Row Taper Roller Bearing
Large Dia. Special Bearing
Spherical Roller Bearing

DEPARTMENTS OF NEI

Railway Bearing Department
Ball Bearing Department
Taper Roller Department
Machine Building Department
Ball Department
Large Diameter Bearing Department
Research & Development Department
Forging Department

BALL BEARING GRINDING

FACING
OUTER DIAMETER GRINDING
OUTER RACE TRACK GRINDING
OUTER RACE TRACK GRINDING
BORE GRINDING
INNER RACE TRACK GRINDING
INNER RACE TRACK HONING
WASHING
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