A

SEMINAR PRESENTATION

ON

“NBC’’

SUBMITTED TO: SUBMITTED BY:

MR. HITESH MARIWALA ASHUTOSH SINGH

(H.O.D) 13APIME033

DEPARTMENT OF MECHANICAL ENGG.

APEX POLYTECHNIC INSTITUTE

JAIPUR

INTRODUCTION

National Engineering Industries Limited (NEI) is the flagship

company of the CK Birla Group, a conglomerate with a

turnover of US$ 1.6 billion. NEI was founded in 1946 by the

renowned industrialist, Shri B M Birla, under the name of

‘National Bearing Company Limited’. The company

commenced manufacturing in 1950 with an annual

production of 30,000 bearings in 19 sizes. With increasing

activities and grant of industrial licenses for other vital

industries and manufacturing, the name of the company was

changed in 1958 to ‘National Engineering Industries Ltd.’

retaining its original trade mark NBC.

NEIL NETWORK

CUSTOMERS

Rolling Stock: -

DLW (Diesel Locomotive Work)

CLW (Chittaranjan Locomotive Works)

Hindustan Motors Ltd.

Maruti Udyog Ltd.

Automobiles-LCV: -

Force Motors

Eicher Motors

Tata Motors

Ashok Leyland

BEARING

“Bearing” is derived from the verb “to bear” a

bearing being a machine element that allows one

part to bear (i.e., to support) another.

A bearing is a machine element that constrains

relative motion between moving parts to only the

desired motion.

It needs a good support to ensure stability and

frictionless rotation.

PRODUCT INFORMATION

(ROLLER BEARINGS)

INFORMATION ABOUT SPHERICAL

ROLLER BEARINGS

SPHERICAL ROLLER BEARINGS

A spherical roller bearings is a

rolling-element bearing that enables

spinning with low friction, and allows

angular imbalance.

Basically these bearings support a spinning base in

the inner band that may be out of alignment in

regard to the external band.

SPHERICAL ROLLER BEARINGS

CONSTRUCTION

Spherical roller bearings involve an inner ring with two

raceways prepared at a position to the bearing axis, an

external ring with a common spherical raceway, spherical

rollers, cages and in certain designs also internal guide

rings or center rings.

Inner raceways

Cage

Rollers

Lubrication

Holes

Outer raceways

SPHERICAL ROLLER BEARINGS

DESIGN

Mostly spherical bearings are developed with two

series of rollers, enabling them to take very large radial

and large axial loads. There are also styles with one

row of rollers, appropriate for reduced radial loads and

almost no axial loads.

SPHERICAL ROLLER BEARINGS

MATERIALS

Chrome Steel

Stainless Steel

Polyamide

Brass

SPHERICAL ROLLER BEARINGS

APPLICATION

Spherical bearings are generally used in countless

industrial applications, where heavy loads and

moderate speeds.

Spherical roller bearings used in Gear boxes, Wind

Turbines, Agricultural Machines, Paper Industry and

Textile Machine.