Premium High-Radial Load Bearings Engineered to ISO Standards for Demanding Industrial Applications.
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.
The unique engineering of the NU design provides specific operational advantages that distinguish it from standard ball bearings or other roller configurations:
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.
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.
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.
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.
| 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 |
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.
The NU Series Cylindrical Roller Bearings are available in multiple cage configurations and load designs to meet varied heavy-duty industrial requirements:
Molded from glass-fiber reinforced polyamide. Lightweight and quiet, these are ideal for standard operating temperatures and higher operating speeds.
Machined from solid brass and roller-guided. Built with exceptional structural strength to handle severe vibrations and heavy shock loads.
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 |
Our NU Series bearings are trusted by major original equipment manufacturers (OEMs) and maintenance teams across India's most demanding infrastructure and processing sectors:
Installed in rolling mill drive shafts, continuous casting machines, and guide rollers where extreme radial pressures and intense operational heat are constant.
Deployed in heavy-duty multi-stage gearboxes and main generators requiring low-friction, high-capacity floating bearing configurations to manage shaft thermal expansion.
Engineered into heavy pulverizers, massive crushers, and material handling conveyors built to withstand high impact forces and gritty, debris-heavy environments.
Utilized on the non-locating side of high-speed centrifugal pumps and screw compressors to ensure smooth rotational stability and precise axial displacement.
Chosen for large-frame industrial motors and ventilation blowers where quiet operation, low vibration levels, and long service intervals are critical.
Deployed in drying cylinders and heavy press rolls to absorb constant radial loads while allowing the machine shafts to expand naturally without binding.
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.
Every shipment is backed by official manufacturer certificates, 100% traceability, and compliance documentation.
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.
Every component sourced directly from authorized manufacturers with full batch traceability.
Ready stock and timely dispatch across India for urgent and bulk requirements.
Flexible supply models tailored for OEMs, industrial clients, and bulk distributors across India.
Decades of expertise in bearing procurement, supplier evaluation, and technical product analysis.
Our team is always available for part identification, sizing, and procurement guidance.
Official authorization from ZVL Slovakia with full OEM documentation and batch certification.
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.