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(iv). Railway Bearing :
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(a) |
Roller Bearing in
Axle Box:
With the production of Roller Bearings and Axle
Boxes since 1952, the company has fully met the
requirements of the Indian Railways (one of the
largest systems of the world) by designing and
developing Axle Boxes and bearings for fitment to
Locomotives manufactured by Diesel Locomotive Works
, Chittaranjan Locomotive Works, various wagon
builders, the ICF broad and meter gauge coaches.
Over a million NBC bearings and boxes are in service
with the Indian Railways.
The development of completely indigenised Axle Boxes
and bearings for the high speed Rajdhani Locomotive, the Yugoslavian and Egyptian Railway
wagons are
the highlights of the design capabilities at NEI.
On
date more than 100 types of Axle Boxes & Bearings
have been manufactured.
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(b) |
Spherical Roller
Bearing:
The manufacturing of Spherical Roller Bearings was
started in the year 1975-76 for fitment to broad
gauge and meter gauge passenger coaches with
designs, technology, machines and equipment procured
from the collaborators.
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(c) |
Cartridge Tapered
Roller Bearing:
For fitment to the new BOX-IN Uprated Wagons designed
by the RDSO, NEI is the only manufacturer in the
country to indigenise these
bearings to a high percentage under collaboration
with the largest manufacturer of these bearings in the
world. Production of these bearings commenced in the
year 1984. These bearings are grease packed and
require no field lubrication for a period of 7
years.
This Division is spread over a
covered area of 4,855 Sq. Meters. |
(v). Large
Diameter Bearing:
Self-sufficiency in steel is the call of the day, so is the
importance of bearings in Steel Mills Equipment. NEI has
the distinction of being one of the ten manufacturers of
these bearings in the world, who can manufacture large diameter
bearings up to 2000 mm diameter.
The largest bearing manufactured by NEI for fitment to the
Plate Mill of Rourkela Steel Plant was released by Mr. G.P.
Birla in September 1985. This 4-Row Tapered Roller
Bearing measures 1300 mm dia and weigh 4.39 tons.
The large diameter bearings are mainly manufactured out of
case carburising steel, heat treated on special equipment
and furnaces developed by NEI. Precision grinding is
done to close tolerances on CNC Twin Spindle Programmable
Berthiez Machine for bearings ranging from 500 to 2000 mm
diameter with electronic sizing and numerical display.
Production of these bearings started in 1975 and to date
over 100 different types of special large diameter
bearings have been manufactured and successfully used, saving considerable foreign exchange for the country.
The Large Diameter Bearings Division is spread over a covered area of
2,508 Sq. Meters. |
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