Bearing Inner Rings Supplier in India

Premium-quality bearing inner rings and bore-adaptation sleeves engineered for steel rolling mills, heavy machinery, and demanding industrial applications — supplied across Delhi NCR and pan-India by Kathuria Techmech Pvt. Ltd.

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About Our Product

Trusted Bearing Inner Rings Supplier with 40+ Years of Engineering Excellence

Kathuria Techmech Pvt. Ltd. is a premier bearing inner rings supplier in India, serving steel rolling mills, heavy industries, and OEM clients across the country. As a sister concern of Kathuria Rollmill Pvt. Ltd., we have a deep, firsthand understanding of what industrial operations demand from every component — including bearing inner rings.

Our bearing inner rings (also known as sleeves or adapter sleeves) are precision-engineered to provide a secure, dimensionally accurate interface between the bearing bore and the shaft. Whether you require standard catalogue sizes or custom-engineered solutions, our technical team ensures the perfect fit for your application.

With sourcing partnerships with globally renowned manufacturers and fast logistics across Delhi, Ghaziabad, NCR, and all major industrial hubs in India, we are your single-source solution for high-performance bearing inner rings.

40+
Years of
Engineering
500+
Industry
Clients Served
Pan
India
Delivery
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Bearing Inner Rings / Sleeves — Kathuria Techmech Supplier India
  ISO-Grade Quality & Global Brand Sourcing
Product Knowledge

What Are Bearing Inner Rings & Why Do They Matter?

A bearing inner ring is the precision-machined component that sits between the rolling elements and the shaft. In heavy industrial applications, its dimensional accuracy and material integrity directly determine bearing life, machine uptime, and operational safety.

In rolling mill and heavy-industry applications, bearing inner rings must withstand intense radial and axial loads, high rotational speeds, thermal fluctuations, and continuous operating cycles. A poorly fitted or substandard inner ring leads to premature bearing failure, unplanned shutdowns, and costly downtime.

As a specialized bearing inner rings supplier in India, Kathuria Techmech supplies rings that are:

Dimensionally Precise

Tight bore tolerances to ISO and DIN standards ensure a secure, interference-fit on the shaft without distortion.

High-Grade Steel Construction

Manufactured from bearing-quality through-hardened steel for maximum wear resistance and fatigue life.

Heat & Load Resistant

Engineered to perform under high temperatures and heavy cyclic loads common in steel rolling environments.

Custom & Standard Sizes

Available in standard OD/ID/width configurations, plus custom-machined dimensions to your exact drawings.

Bearing inner rings act as a precision adapter — allowing a standard bearing with a specific bore to be mounted on a shaft of a different (usually smaller) diameter. They are also used to replace worn or damaged inner rings without replacing the entire bearing assembly, significantly reducing maintenance costs in large industrial setups.

For applications such as roll neck bearing assemblies in hot and cold rolling mills, the inner ring must handle extreme loads while maintaining precise alignment. Any defect in the inner ring raceway can lead to catastrophic bearing failure and mill downtime — underscoring the importance of sourcing from a proven, quality-focused supplier.

Common Applications

Hot Rolling Mills Cold Rolling Mills Roll Neck Assemblies Gearboxes Conveyor Systems Steel Plants Cement Plants Mining Equipment Paper Mills Power Generation Pump & Compressor Heavy Machinery
Our Range

Types of Bearing Inner Rings We Supply

From standard bore-adaptation sleeves to precision inner rings for four-row configurations — we stock and source the complete range for your industrial needs.

Adapter Sleeves / Standard Bearing Inner Rings Supplier India

Adapter Sleeves (Standard Inner Rings)

Tapered adapter sleeves that allow easy mounting of bearings with tapered bore onto cylindrical shafts. Ideal for quick installation and adjustment in conveyor and shaft applications.

Most Popular
Inner Rings for Four-Row Tapered Roller Bearings India

Inner Rings for Four-Row Tapered Roller Bearings

Precision-machined inner rings designed for four-row tapered roller bearing assemblies used in roll-neck positions of hot and cold rolling mills under heavy combined loads.

Rolling Mill
Inner Rings for Cylindrical Roller Bearings India

Inner Rings for Cylindrical Roller Bearings

High radial load capacity inner rings for four-row cylindrical roller bearings; widely used in continuous rolling mill stand roll necks and industrial machinery.

Heavy Load
Inner Rings for Spherical Roller Bearings Supplier India

Inner Rings for Spherical Roller Bearings

Self-aligning inner ring assemblies capable of handling combined loads and moderate shaft misalignment — suited for gearboxes, conveyors, and pulp & paper mills.

Self-Aligning
Custom Machined Bearing Inner Rings India

Custom-Machined Inner Rings


Bespoke inner rings machined to your exact dimensional drawings and material specifications — ideal for OEMs, rebuild projects, and legacy equipment where standard sizes are unavailable.

Custom Order
Matched Pair Inner Rings Supplier India

Matched / Paired Inner Ring Sets


Pre-matched inner ring sets offering enhanced axial rigidity and uniform load distribution for back-to-back or tandem precision bearing assemblies in machine tools and rolling lines.

Precision
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Technical Reference

Bearing Inner Rings — General Specification Range

Indicative range. Exact specifications depend on bearing series and application. Contact us for your precise requirement.

Parameter Standard Range Custom Range Applicable Standard
Bore Diameter (d) 15 mm – 500 mm Up to 1,200 mm ISO 15, DIN 5412
Outer Diameter (D) 30 mm – 650 mm Custom per drawing ISO 15
Width / Height (B) 10 mm – 180 mm Custom per drawing ISO 15, DIN
Material Through-hardened bearing steel (100Cr6 / GCr15) Special steel alloys on request ISO 683-17
Hardness (Raceway) 58–64 HRC As specified ISO 15243
Tolerance Class Normal (P0), P6, P5 P4, P2 on request ISO 492
Surface Finish (Raceway Ra) ≤ 0.2 μm ≤ 0.1 μm on request ISO 1302
Applicable Bearing Types Cylindrical, Tapered, Spherical, Angular Contact, Deep Groove ISO 15, ISO 355
Our Advantage

Why Kathuria Techmech is India's Preferred Bearing Inner Rings Supplier

40+ Years of Industry Expertise

Decades of hands-on experience in rolling mill components means we understand your exact requirements — from selection through to installation and troubleshooting.

Global Brand Sourcing

We partner exclusively with globally reputed bearing manufacturers to ensure every inner ring meets the highest international performance and reliability standards.

Strict Quality Assurance

Each product is quality-checked against dimensional, hardness, and surface-finish parameters before dispatch — zero compromise on tolerances.

Expert Technical Support

Our engineers assist with inner ring selection, fit calculations, and installation guidance — ensuring optimal performance and maximum bearing life in your application.

Competitive & Transparent Pricing

Direct sourcing partnerships with manufacturers allow us to offer the best value without compromising on quality — with transparent pricing and no hidden costs.

Pan-India Fast Delivery

Reliable logistics from our Ghaziabad facility to all major industrial centres — Delhi NCR, Mumbai, Chennai, Kolkata, Pune, Ahmedabad, and beyond.

Industries We Serve

Bearing Inner Rings for Every Demanding Industrial Sector

Steel Rolling Mills

Hot & cold rolling mill roll-neck assemblies requiring extreme load capacity.

Power Generation

Turbine, generator, and auxiliary equipment bearings in thermal and hydro plants.

Mining & Quarrying

Crushers, conveyors, and screening equipment subject to heavy shock loads.

Cement Industry

Rotary kilns, ball mills, and vertical roller mills in cement manufacturing.

Pulp & Paper

Press and dryer sections of paper machines with high speed and load demands.

Heavy Engineering

Large-scale fabrication, forging presses, and heavy OEM machinery.

Machine Tool Industry

Precision CNC spindles and machining centres requiring tight-tolerance inner rings.

Pumps & Compressors

High-speed rotating equipment in oil & gas, chemical, and process industries.

How We Work

Your End-to-End Bearing Inner Rings Procurement Journey

Enquiry & Requirement


Share your bearing type, bore size, application details, or drawings via email, phone, or the form below.

Technical Evaluation


Our engineers verify specifications, confirm fit calculations, and recommend the optimal inner ring solution.

Quotation & Approval


Receive a competitive, transparent quote. We source or confirm stock availability from our global supplier network.

Quality Check & Dispatch

Products undergo final QC inspection before secure packaging and fast dispatch to your facility across India.

Frequently Asked Questions — Bearing Inner Rings

Four Row Cylindrical Roller Bearings — Common Questions

What is a bearing inner ring and how is it different from a full bearing?

A bearing inner ring is the inner raceway component of a rolling-element bearing. Unlike a complete bearing assembly (which includes inner ring, rolling elements, cage, and outer ring), an inner ring alone is used either as a bore-adaptation sleeve or as a replacement component when only the inner ring has worn. This approach is cost-effective for large industrial bearings where replacing only the damaged ring avoids the expense of a complete bearing assembly replacement.

Do you supply bearing inner rings for rolling mills across India?

Yes. Kathuria Techmech is a pan-India bearing inner rings supplier. We deliver to Delhi, Ghaziabad, NCR, and all major industrial corridors including Mumbai, Chennai, Pune, Ahmedabad, Kolkata, Hyderabad, and beyond. We also serve steel plants, rolling mills, and heavy industries in tier-2 industrial hubs across India.

Can you supply custom-sized bearing inner rings to our drawings?

Absolutely. We specialize in custom-engineered bearing inner rings machined to your exact dimensional drawings and material specifications. This service is particularly valuable for legacy equipment, OEM rebuilds, and applications where standard-size rings are no longer commercially available. Share your drawing or dimensions with us for a prompt quotation.

What brands of bearing inner rings do you supply?

We partner with globally reputed bearing manufacturers to source premium-quality inner rings. Our portfolio includes products from internationally recognized brands that meet ISO, DIN, and application-specific standards. Please contact us with your brand preference or application requirement and we will advise accordingly.

What is the typical lead time for bearing inner rings supply?

Lead times vary depending on size, quantity, and whether the product is from stock or requires sourcing. Standard sizes are typically dispatched within 3–7 working days. For custom-machined or large-size inner rings, lead times are communicated at the time of quotation. We prioritize urgent requirements for steel plants and critical production applications — contact us to discuss your timeline.

Do you provide technical assistance for bearing inner ring installation?

Yes. Our engineering team provides technical support for bearing inner ring selection, interference fit calculation, installation method guidance, and maintenance advice. We also supply induction bearing heaters for safe, precise mounting of inner rings without mechanical force damage. Proper installation is as critical as the quality of the component itself.

Get In Touch

Contact India's Trusted Bearing Inner Rings Supplier

Whether you need a standard size, a custom-machined solution, or technical guidance — our team is ready to assist. Request a quote today for fast response and competitive pricing.

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+91 7719617471
Kathuria Techmech Location Map — Ghaziabad India
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