Masjid Bunder West, Mumbai - 400003
sales@swarajbearing.com WhatsApp Us +91 98928 50333
Manufacturer & Supplier in India

As a premier engineering partner and authorized distributor, Swaraj Bearing Company delivers high-performance NU Series Cylindrical Roller Bearings designed to handle extreme radial loads with flawless rotational precision. Catering to heavy industries across India—from the manufacturing hubs of Maharashtra and Gujarat to the major steel plants in Odisha and Jharkhand—we ensure seamless supply chain continuity with comprehensive inventory availability and rapid engineering support.

The defining characteristic of the NU design is its structural flexibility: it features two integral flanges on the outer ring and a smooth, flangeless inner ring. This allows the inner ring to displace axially relative to the outer ring, making it the industry-standard solution for accommodating shaft thermal expansion in high-heat, high-speed machinery.

Series: NU TVP / M / E-Design Chrome Steel Heavy Radial Load
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NU Series Cylindrical Roller Bearings with high radial load capacity and separable flangeless inner ring design
Overview

Overview of NU Series Cylindrical Roller Bearings

Maximum Radial Capacity: Optimized roller-to-raceway line contact distributes heavy loads evenly.
Axial Displacement: Functions beautifully as a "floating" or non-locating bearing to prevent equipment binding. If your setup requires one-directional tracking instead, consider an NJ Series Cylindrical Roller Bearing.
High-Speed Stability: Precision-ground components minimize friction, heat generation, and vibrational wear. For fixed, double-direction containment at high speeds, explore the NUP Series Cylindrical Roller Bearing design.
Design Characteristics

Key Features & Design Characteristics

The unique engineering of the NU design provides specific operational advantages that distinguish it from standard ball bearings or other roller configurations:

Separable Design for Easy Mounting

The outer ring with the roller and cage assembly can be mounted independently from the flangeless inner ring. This significantly simplifies installation, maintenance, and inspection cycles in tight machinery spaces.

Accommodates Axial Displacement

Because the inner ring has no flanges, the shaft is free to move axially relative to the housing. This completely eliminates internal stress and binding caused by thermal expansion during high-temperature operations.

Optimized Line Contact Geometry

Unlike ball bearings that feature point contact, cylindrical rollers feature line contact with the raceways. This distributes heavy radial forces evenly, dramatically increasing load-carrying capacity and fatigue life.

High Speed Capabilities

Ground to precise tolerance classes, the internal geometry minimizes frictional torque and heat generation, allowing these bearings to excel in high-velocity electric motors and blowers.

Technical Data

Technical Specifications Snapshot

Parameter Specification
Bearing Type NU Series Cylindrical Roller Bearings
Load Type Heavy Radial Loads (Zero Axial/Thrust Load Capacity)
Design Variant Two integral flanges on outer ring, flangeless inner ring
Cage Options Glass-Fiber Reinforced Polyamide (TVP) / Machined Solid Brass (M)
Material Premium High-Carbon Chromium Bearing Steel
Internal Clearance Standard (CN) / C3 / C4 (High-Temperature Clearance)
Precision Grade Standard ISO P0 / High-Precision P6 & P5
Lubrication Compatible with Industrial Bearing Grease or Oil Circulating Systems
Genuine Global Brands Available

Genuine Global Brands Available

We recognize that heavy industries require absolute component reliability. To ensure your operations never suffer from premature machinery failure, we supply and distribute genuine, certified global brands manufactured to strict international benchmarks, including ZVL Slovakia, offering premium European engineering featuring strict compliance with ISO boundary dimensions and advanced metallurgy, along with SKF, FAG, and NSK, globally recognized brands for high-precision and critical heavy-duty applications. Note: Every shipment is backed by official manufacturer certificates, 100% traceability, and compliance documentation.

ZVL SKF FAG NSK NTN
Available Models

Variants & Available Models – NU Series Cylindrical Roller Bearings

The NU Series Cylindrical Roller Bearings are available in multiple cage configurations and load designs to meet varied heavy-duty industrial requirements:

Polyamide Type (TVP / TVP2)

Molded from glass-fiber reinforced polyamide. Lightweight and quiet, these are ideal for standard operating temperatures and higher operating speeds.

Machined Brass Type (M / EM)

Machined from solid brass and roller-guided. Built with exceptional structural strength to handle severe vibrations and heavy shock loads.

High-Capacity Type (E-Design)

Features an optimized internal geometry with larger or more rollers to provide significantly higher dynamic and static load ratings.

Below are commonly available models in Polyamide (TVP), Machined Brass (M/EM), and High-Capacity (E) variants:

Dimensional Series Configuration Type Available Model Ranges (Covered in Stock)
NU 200 Series (Light) Polyamide / Brass / E-Design NU203 to NU220, NU222, NU224, NU226, NU228, NU230 to NU240, NU244
NU 300 Series (Medium) Polyamide / Brass / E-Design NU303 to NU320, NU321, NU322, NU324, NU326, NU328, NU330
NU 400 Series (Heavy) Standard / Machined Brass NU405 to NU420, NU422
NU 2200 Series (Wide) Polyamide / Brass / E-Design NU2203 to NU2218, NU2220, NU2222, NU2224, NU2226, NU2228, NU2230
NU 2300 Series (Heavy-Wide) Polyamide / Brass / E-Design NU2304 to NU2320, NU2322
Where We Supply

Applications & Industries

Our NU Series bearings are trusted by major original equipment manufacturers (OEMs) and maintenance teams across India's most demanding infrastructure and processing sectors:

Iron & Steel Plants

Installed in rolling mill drive shafts, continuous casting machines, and guide rollers where extreme radial pressures and intense operational heat are constant.

Power Generation & Wind Energy

Deployed in heavy-duty multi-stage gearboxes and main generators requiring low-friction, high-capacity floating bearing configurations to manage shaft thermal expansion.

Cement & Mining Industries

Engineered into heavy pulverizers, massive crushers, and material handling conveyors built to withstand high impact forces and gritty, debris-heavy environments.

Pumps & Industrial Compressors

Utilized on the non-locating side of high-speed centrifugal pumps and screw compressors to ensure smooth rotational stability and precise axial displacement.

Electric Motors & Blowers

Chosen for large-frame industrial motors and ventilation blowers where quiet operation, low vibration levels, and long service intervals are critical.

Paper & Textile Mills

Deployed in drying cylinders and heavy press rolls to absorb constant radial loads while allowing the machine shafts to expand naturally without binding.

Our Standards

Quality Assurance

At Swaraj Bearing Company, quality is a structural commitment rather than a checklist. As an officially authorized distributor for ZVL Slovakia, we guarantee 100% genuine supply directly from the factory, backed by official OEM certificates of authenticity for absolute traceability. Every NU Series bearing we deliver complies strictly with international standards, including ISO 15 for precise boundary dimensions, ISO 281 for dynamic load ratings, and ISO 76 for static loads.

By sourcing from globally recognized European manufacturers, we ensure our bearings are produced using premium carbon-chromium steel for exceptional wear resistance under punishing radial loads. To maximize operational uptime across Indian industries, all components can be tailored with advanced thermal stabilization for high-temperature machinery exceeding 120°C. When you partner with us, your procurement team receives fully verified components complete with manufacturer warranty coverage and full technical documentation to eliminate operational risk.

ISO 15 for Precise Boundary Dimensions
ISO 281 for Dynamic Load Ratings
ISO 76 for Static Loads
Manufacturer Warranty Coverage & Full Technical Documentation
Authorized Supply Channels

Every shipment is backed by official manufacturer certificates, 100% traceability, and compliance documentation.

ZVL SKF FAG NSK NTN
Our Edge

Why Choose Swaraj Bearing Company?

Swaraj Bearing Company supplies genuine NU Series Cylindrical Roller Bearings through authorized sourcing channels. As an authorized distributor of ZVL Slovakia and a trusted partner for leading global brands, we ensure ready stock availability, proper documentation, and timely pan‑India dispatch for heavy-duty industrial applications.

Genuine Products Only

Every component sourced directly from authorized manufacturers with full batch traceability.

Fast Pan-India Dispatch

Ready stock and timely dispatch across India for urgent and bulk requirements.

OEM & Distributor Friendly

Flexible supply models tailored for OEMs, industrial clients, and bulk distributors across India.

20+ Years Experience

Decades of expertise in bearing procurement, supplier evaluation, and technical product analysis.

Dedicated Technical Support

Our team is always available for part identification, sizing, and procurement guidance.

Authorized ZVL Distributor

Official authorization from ZVL Slovakia with full OEM documentation and batch certification.

FAQs

Frequently Asked Questions

A: No. Because the inner ring has no flanges, an NU bearing cannot locate a shaft axially or take any thrust loads. It should strictly be used for heavy radial loads or paired with an NJ/NUP bearing if axial tracking is required.

A: Brass cages are machined for heavy shock loads, severe vibrations, and extreme temperatures (above 120°C). Polyamide cages are excellent for quieter, high-speed, and cost-effective standard operations.

A: Yes. Every batch of genuine bearings comes with complete manufacturer traceability, dimension check reports, and ISO compliance certificates.

A: The "E" suffix indicates an enhanced or high-capacity design. This means the bearing's internal geometry has been optimized with larger or more rollers to provide significantly higher dynamic and static load ratings than a standard NU bearing of the same size.
Get In Touch

Looking for a Reliable Bearing Supplier in India?

Get an instant quote, check stock availability, or consult with our application engineers to find the exact NU Series configuration for your machinery. Contact our technical sales team today.