TAPPER TURNING AND MACHINING PROCESS

1. Presented To Presented By
Mr. Shabbir Alam Pushpendra Kumar
Asst. Professor 16EGJME089
Presentation
on
Practical Training
Taken at
“NATIONAL ENGINEERING INDUSTRIES LTD.” Jaipur
Department of Mechanical Engineering
Global Institute of Technology
Jaipur (Rajasthan),302022

2.  Introduction
 NEIL Network
 NBC Pant at Jaipur
 Product Portfolio
 Flow of Material in NBC
 TRB Department
 My Project
 Taper Roller Bearing
 Component of TRB
 Grinding Process For Roller
Contents

3. • 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 name of the company was changed in 1958 to ‘National
Engineering Industries Ltd.’retaining its original trade mark
NBC.
• Over the past 60 years, NBC, has grown to be the leading and
fastest growing bearings brand inIndia and currently produces over
100 million bearings in more than a 1000 sizes everyyear.
Introduction:-

4. NEIL Network

5. “NBC” Jaipur Plant
• NEI’s Jaipur Plant is located at Khatipura Road.
• The Jaipur Plant also act as Headquarter of National Engineering Industries
Limited.
• Spread over a total area of 4,78,900 m2 and a covered area of 75,310 m2.
• Jaipur plant has state of the art manufacturing facilities and capable to
manufacture all types of Ball and Roller Bearings of NEI product range.

6. Product Portfolio
Cylindrical Roller Bearing
Spherical Roller Bearing
Railway Products
Special Bearing products
Next Generation Bearings
Taper Roller Bearing
Ball Bearing

7. Material
From
Outside
Vendor
Store
House
Laboratory
Material
Send to
Departments
Hardening Rough
Grinding
Finish
Grinding Inspection
Assembly
To Store
House
Flow of Material in
NBC

8. 1. This plant with the most modern equipment was set up in the year 1968.
2. Manufactured at an ultra-modern plant, with technology obtained from our
earlier collaborators, Federal Mogul Corporation, USA and now with NTN
Corporation, JAPAN, these bearings are used by all major automobiles,
truck and tractor manufacturers in the country as original equipment.
3. The above bearings are manufacture in inch & metric series form 15.857mm
bore to 95.25mm bore.
4. For TRB NEI has Automatic Grinding Lines with in-process & post process
gauges. Complete automation by Flex link conveyor. Crowning provision
on Inner (Cone) & Outer (Cup).
5. The plant is spread over a cover area of 11,652 sq. meter.
Taper Roller Bearing Department

9. My Project
Size Holding of Taper Roller and Od Grinding Machine

10. 1. Taper Roller Bearing (TRB) are bearing that can take
large axial (thrust) and radial force.
2. Based on the observation that cones that meet at a point
can roll over each other without slipping.
3. Generally separable, which means the cone assembly,
considering of the inner with roller and cage.
4. Precision roller Bearing from 17mm bore to 100mm
bore diameter are manufactured in NBC.
Taper Roller Bearing

11. TRB has mainly four components:-
1.Cup (outer)
2.Cone (inner)
3.Roller
4.Cage
Cup (outer) Cone (inner) Roller Cage
TRB Component

12. Grinding Process for Roller
Roller
End
Grinding
Roller
O.D.
Grinding
Roller
O.D.
Honning
To
Assembly

13. Roller End Grinding
Taper Roller face grinding in this grinding process the end faces
of the taper rollers are pre-ground and finished in one pass. The
roller is guided by the end faces within the bearing; a very fine
surface finish and exact geometry must be achieved.

14. Roller OD Grinding

15. Roller OD Grinding Machine

16. The Honning is mainly used to correct some out of roundness,
taper, and tool marks left by previous operation or axial
distortion. Honning is done by means of bonded abrasive grit
stick stones(of aluminum oxide or silicon carbide) applied to the
surface to be honed under controlled pressure and with a
combination of rotary and reciprocating motion of stones.
Due to relative motion between workpiece and abrasive stones
and its hardness a very small amount of material is removed
from the workpiece.
Roller OD Honning

17. Roller OD Honning Machine

18. Reference:-
www.google.com
www.nbc.com
www.slideshare.com

19. Any Queries ?