A PRESENTATION ONVOCATIONAL SUMMER

TRAININGAT

NATIONAL BEARING COMPANY

Dr . K.n. modi university newai tonk (raj.)

Submitted By: Raj pareek

Slides Content

. Introduction of the company

. Network of Assambly

. Technical collaboration

. Turnover the company

. Costomer of company

. Product of company

. Ball depatment

. Chugrai –ro furnace plant.

. Grinding department

Slide Contents

Assambly department

INTRODUCTION OF THE COMPANY Nbc bearing is the premier brand of

india is leading bearing manufature and exporter company , founded in 1946 by indstrial late shri b.m. birla

Nbc is a pioneer, renowed for excellence in quality and delivery for over 60 years

Nbc product over 100 million bearing each year in more than 1000 sizes serve a host of varried costomer across india and 21 other countries in 5 continents

In from has capacity to develop bearing 10 mm bore to 2000 mm outer diameter . The product range include in ball bearing.

With increasing activities and grant of industrial licenses for other vital industries and manufaturing the name of the company was changed in 1958 to national engineering industries ltd . Retaining its original trade mark NBC

Network of NBC the nei network in all india is

Chennai Gurgaon Jaipur Kolkata Mumbai Newdelhi Newai (gunsi) Pune

Customer of Company Domestic customer. Ashok Leyland. Bharat benz. Bajaj auto. Escort tractors. Hero motocop. Honda motorcycls. Indian railwayMaruti suzukiTata motors

International customers

Amsted rail (usa) Agrale brazil Bonfiglio oil (itly) Con met (usa) Nissan (japan) Rio tinto( australia) daimler (germany)

Product of Company Ball bearing a ball bearing is

type of rolling element bearing that uses ball to maintain the separation between the bearing races .

The purpose of a ball bearing is to reduce rotational friction and support radial and axial load.

Ball Bearing

Parts of ball bearing

Ourte ring Inner ring Steel balls Cage

CHOUGAI-RO FURNACE PLANT

Chougai-ro is a re heating furnace highly evaluated technology world wide since chougai ro reheating furnace unit major iron works and copper elongation company . This model suitable all rolling mills such as hot rolled , section steel ,wire rod , pipes mills.Hardening furnace- a rotational drum seeling extraction dedicated beam are adopted for the stable transfer uniform heat in steel pipes.

Work of chugai ro The Hardness of steel is achived by a

chougai ro heat treatment process in which is steel microstructure manipluted by cycle heating and quick cooling obtain the optium hardness range the steel rings. Usually the hardenss range are 60 to 65 on rockwell c hardness scale.

Steel rings are suddenly quenched by quneching oil and air steel materials formes extremely hard & stronge.

CHUGAI RO FURNACE PLANT

BY AIR

JOB

PRE -WASHING

(KAROSINE)

ZONE 1 840`C

ZONE 2 850` C

ZONE 3 850`C

ZONE 850` C

HINEING FURNACE

115`cQUENCHING OIL TANK

gas

By air cooling

Chugai ro furnace

Temperi-ng

furnace170`c

90 minute

By coolin-g air

By air cooling

Grinding process

Outer grinding. Face . OD. Track Face grinding –G 81Machine Name- nisseiB.N. 6203 by using outer wheel face making.Machine temprature are maintain by air conditionar . 25~30 c abrassive wheel.

Outer Ring Grinding OD Grinding - grinding wheel and regulate

wheel are use to grind od. B.n. 6203By using coolant in cutting tool be od grind by wheel.ProceesHopper ir sensor grinding wheel

After rough od we do finish Od . Rough Od

Grinding process

Grinding process

Outer track grinding Machine name- IZUMI (KN 2130) B.n. 6204

HOPPER CONVEYOUR IR SENSOR OUTER TRACK GRINDING

Conyeour

conyeour

Conve-yo-ur Outer track

super grinding

DEMAGEN--ET

Washing panel ASSAM

-BLY

OUTER TRACK GRINDINGGRINDING small wheel Are used make outer track.HopperIr proximatry sensorGrinding wheelSpindleUpper armLower arm

Izumi (kN2130)

Outer track super grinding In Outer track super grindingWe are use to stone to give a Super pollish of outer track.In outer track super grinding We are use two types of stone.1. Yellow2. GreenCnc machine are useLeft headRight head

Inner rings grinding

Inner rings -1 Track2 BoreInner track grinding-1. work head2. Wheel3. Dressor4. Arm5. Grinding coolant6. Gauge7. Motor

Inner track grinding NG 10

We use to Abrassive wheel grind inner track. one by one inner are Comes to hopper and grind by abrassiveWheel.After inner track Grinding bearing goEs for demagnet .

Inner bore grinding G(233)

B.N. – 6204MEAN SIZE- (5) MICRON1. SLIDE2. Backing plate3. Spindle4. Loading5. Kova grinding machine6. Air gauge.

Inner track super grindingInner track are use to two types Stone to super pollishing of Inner track.Yellow stone and green stone to Be used pollishing of inner Track.

ASSAMBLY DEPARTMENT

PROCESS OF ASSAMBLY BEARING (NA -13)

MACHINE NAME – CAULKA ASSAMBLY MACHINE.

IR /OR

WASHING

IR /OR TRACK

DIA. cheking

pairing Ball filling

Cage assam-bly

Cage assambly

demagen

et

Ultra sonic washi-ng

Noise checki-ng

Laser marking

Vaccume dryin

-ggreeci-ng

Rubber

seal

Bearing Designation In NBC Rolling bearing part numbers indicate

Bearing type, Dimensions, Tolerance, InternalConstruction & other related sphe Digits & Indications are:-

1stDigit – Bearing Type. 2ndDigit – Width or Height Series3rdDigit – Diamete Series Last 2 Digits – Bore Diameter

Bearing designation in Nbc B.N. 6207 6- DEEP groove BALL BEARING 2- DIAMETER SERIES 2 07- NOMINAL BORE DIAMETER (35) Inside diameter- 35 mm Outside diameter- 72 mm Width – 17mm Zz- double type groov on outer

Application of ball bearingAPPLICATION B.N.

FAN(ORIENT) 6203 BAJAJ 150CC CRANK CASE

6203

BAJAJ PULSAR 220CC (FRONT WHEEL)

6301 (2)

ENGINE FLYWHEEL(EIACHER MOTORS)

6202

APPLICATION OF BALL BEARING

THANK YOU