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Office address
National Engineering Industries Ltd.
Khatipura Road Jaipur – 302006 Rajasthan, India
Phone Number

Toll Free: 1800 3000 6222
Telephone: +91 141 222 3221
Fax: +91 141 222 1926, 222 2259
CIN: U29130WB1946PLC013643

NBC Bearings

Founded in 1946, National Engineering Industries Ltd (NEI) is India’s leading bearings manufacturer and exporter, renowned for excellence in quality and delivery.

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Four Row Tapered Roller Bearings

What are Four Row Tapered Roller Bearings?

Just like other tapered roller bearings, these bearings can deal with combined load of radial & axial. However, it operates best for applications with low and medium speed. Four row tapered roller bearings can accommodate radial and axial loads ideally for rolling mill applications. They are used in work rolls and back-up roll applications in rolling mills. The bearings might have a straight bore or a tapered bore.

Features of Four Row Tapered Roller Bearings

These tapered roller bearing variants are similar in form and feature to other tapered bearings. The distinct features are:

  • Four cup design to enhance multi-direction weight management
  • Self lubricating bearing with optimised raceway support
  • Optimal seal design to prevent overheating and friction
  • Each of these cups have their own strength, so sealed or not, each roller is capable of lasting for longer time

In case of a four row tapered bearing, there are two variants:

TQO (Straight bore four row bearing arrangement)

  • Two double cones with cone spacer, two single cups
  • Two single cups on either side with a double cup in the middle
  • Two cup spacers separating single cup & double cup
  • Spacers have holes for lubrication
  • Cone spacers are hardened to reduce face wear

TQIT (Tapered bore four row bearing arrangement)

  • One double cone with 2 single cone tapered bores matched through all the cones and four single cups with three cup spacers
  • Lubrication holes in 3 cup spacers
  • Faces of single cones and both faces of double cone contact each other

These variants are also provided with a helical groove inside bore and slots on the face of bearings for better lubrication. The preset assemblies ensure that

Advantages of Four Row Tapered Roller Bearings

  • Four distinct outer rings ensure optimal load distribution over all rollers.
  • Surface finish on the rollers and raceways create hydrodynamic lubricant film.
  • Improved resistance to wear and tear over time due to use of clean homogeneous steel and unique heat treatment.
  • Improved seal design ensures minimal leakage, friction and frictional heat, thereby positively impacting the environment and maintenance budgets.
  • The bearing components can be used interchangeably. The bearing has a separable mounting, dismounting and inspection.

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    Leadership quotes

    Discovering unique solutions to reimagine and reinvent technology from a futuristic perspective is part of NEI’s best practices. Taking pride in unleashing the potential of innovative minds through informal education, we encourage our employees to share their exclusive ideas on our Idea portal, and we host the ‘Idea Factory’ contest for budding engineers currently studying in different universities—fostering independence of thought.
    Rohit Saboo
    Rohit SabooPresident & CEO
    Renu is a seasoned HR leader with a proven track record of strategic-business partnering, culture-building and organizational transformation in leading companies, spread across key sectors of Logistics, MEP Services, Healthcare, Engineering and Manufacturing. For her thought leadership, Renu got nominated in Asia’s 100 Power Leaders HR in 2022 and ET Prime HR Leader of the Year in 2023. An alumna of IIT Roorkee, Renu is passionate about people & culture, DEI, Future of work, and CSR. Renu joined NBC in 2024 to lead the HR fuction and drive growth, culture and leadership across all levels.
    Renu Bohra
    Renu BohraCHRO
    Finance these days is not about record keeping, it is more about working alongside the business and drive strategy. The world is changing so rapidly and we are going through unprecedented situations. The key is to keep on top of it and learn. It is all about evolving, innovating and adapting to succeed in the business world. At NEI, we ensure that we listen to our stakeholders and adjust ourselves to meet the evolving needs.
    Gourav Chaturvedi
    Gourav ChaturvediCFO
    As a leading exporter and manufacturer of bearings, with the objective of reducing energy consumption and improving energy efficiency to lower GHG emissions and Carbon Footprint, we take a leap forward in leveraging opportunities to expedite the transfer and diffusion of environment-friendly and clean-energy technology.
    Rohit Saboo
    Rohit SabooPresident & CEO
    We are committed to grow our customer base across the 5 continents we currently serve. With our subsidiary Kinex in Europe, we are even closer to our international customers. Our major focus is towards investing in quality of products, people and technology. We have chalked out our growth plans and will keep working towards expanding our portfolio based on the evolving landscape of the industry and ofcourse, the needs of our customers.
    Sanjeev Taparia
    Sanjeev TapariaCSMO
    The imprint of transformational leadership in our day-to-day operations in offering flexible solutions even amidst crisis stands out as one of NEI’s core strengths. Putting employees first on our list of priorities and working in harmonious alliance adds to our spirit of maintaining a healthy and productive work environment. We rejoice at keeping up a vision that guides change through inspiration as we make our way through the extended new normal.
    Rohit Saboo
    Rohit SabooPresident & CEO
    We are delving our feet into the aerospace and defence industries. We consider this as an excellent time to enter this segment, given the present focus is on ‘Atmanirbhar Bharat’ which will lead to lower import dependency for the companies in these segments. We have been engaged with a number of aerospace businesses and have learnt that there is a lot of room for a local player to proactively work with them from concept to production.
    Dr. Lokesh Agrawal
    Dr. Lokesh AgrawalCTO
    Our nation is at the cusp of greatness , If India plays it's cards well , then this decade and the next one could belong to our nation , NEI leadership is fully geared to perform it's role in this transformation .
    Shailesh Patni
    Shailesh PatniCDS
    The ability to execute in rapidly evolving environment is set to become a decisive competitive differentiator for sustaining the profitable growth. To drive significant improvement in financial and operational metrics and to bring step change in productivity, flexibility and speed, rapid digitization through automation, advanced analytics, and machine learning is needed. Besides this, setting up resilient, risk-tolerant supply-chain and procurement structures along with re-skilling human capital with the skills and mindset the digital world requires, is the key to success
    Rajan Jain
    Rajan JainCOO
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    National Engineering Industries Ltd. Khatipura Road Jaipur - 302006 Rajasthan, India

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    Registered Office : 9/1, R. N. Mukherjee Road, Kolkata – 700 001. In case of any queries or grievances, please contact Mr.Tarun Kumar Kabra, Company Secretary.
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