Double Row Cylindrical Roller Bearing
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Balaji Bearing India is a leading Double Row Cylindrical Roller Bearing manufacturer and supplier in India, offering a wide range of premium-quality bearings for various industrial applications. With a strong presence in Pune, Kolkata, Mumbai, Chennai, and across India, we are also recognized as a trusted bearing dealer, distributor, and exporter in Chennai, Mumbai, and India. Our extensive stock inventory enables us to provide quick delivery and reliable supply to industries nationwide. This ensures reduced machine downtime and improved operational efficiency for businesses across multiple sectors.
What Is a Double Row Cylindrical Roller Bearing?
The Double Row Cylindrical Roller Bearing, also referred to as the Two Row Cylindrical Roller Bearing, is a type of roller bearing in which it consists of two rows of cylindrical rollers arranged side-by-side, separated by a rib or cage that maintain their even spacing. As they contain twice the number of rollers per bearing unit in contrast to single-row bearings, they boast double the bearing capacity.
Due to their superior radial load capability in a small package size, Double Row Cylindrical Roller Bearings are typically used for precision equipment where stiffness and space are a key constraint. Their inner and outer ring designs differ significantly in this type. Inner rings usually have two ribs, while outer rings often have a single rib that controls the position of the roller complement in either the axial or radial direction, thus making it suitable for applications that encounter minor shaft deflections.
Types and Sizes
There are many configurations that are manufactured and exported by Balaji Bearing India that vary depending on their mounting applications, as well as load bearing capacities:
- Full Complement Design: This type is designed without a cage to allow maximum rollers to fit into the race to support heavy loads at slow and medium speeds. This application works best for large load-bearing capacity, rolling mill stand type of equipment.
- Caged Design: This utilizes a roller cage which helps in maintaining the proper distance between the rollers in order to decrease the friction. This helps in rotating at higher speeds.
- Tapered Bore Design: This type is generally made with a tapered bore for installing over the tapered shaft with the help of withdrawal sleeve and adaptor for better installation and dismount ability in maintenance situations.
- Sealed and Shielded Design: The rollers in the bearing are protected with dust, moisture, and contaminants using seals especially for environments that are prone to heavy duty usage and in adverse conditions.
Balaji Bearing India caters to this series ranging from a bore diameter of around 25 mm up to more than 500 mm in large and heavy loads, such as heavy rolling mill and crusher equipment and compact gearboxes and machine tool spindle applications. Standard series for these products include NNCF, NNU49, NNCF, NN49.
Balaji Bearing India also holds stock for export of inch, and metric versions that suit machinery designed in ISO, DIN and ANSI Standards. Special Bore, Outer Diameters, and Widths. Balaji Bearing India also manufactures custom bearing types based on customer specific bore and external dimensions as well as width to fit in OEM specialized machines, and the customers can forward drawings for the technical team’s review for approval and the provision of samples for verification prior to placing mass production orders.
Benefits of Using a Double Row Cylindrical Roller Bearing
Using a quality Double Row Cylindrical Roller Bearing over a regular single row unit provides plant owners and machine builders with several quantifiable performance improvements:
- Higher Radial Load Capacity: Two roller rows share loads across more contact points, allowing higher load operations without over-sizing a bearing housing or needing a larger shaft.
- Improved Rotational Accuracy: Tightly controlled internal clearances combined with precision-ground raceways restrict runout to exceptionally low levels-an essential quality for precision machine tools and spindles.
- Extended Service Life: Concentrated loads are distributed evenly along the rollers' length in line contact, which is far superior to the point contact of ball bearings in this configuration and this reduces bearing fatigue, thereby significantly prolonging the bearing life for units that are appropriately lubricated under high radial loading.
- Reduced Maintenance Costs: Bearings that operate more reliably without unexpected failure leads to fewer unplanned outages, reduced spare inventory costs and allows for better planned bearing replacement programs for plant operators.
- Lower Operating Noise and Vibration: Line-contact friction is smoother than ball-on-raceway friction to diminish vibration harmonic frequencies in turn yielding much quieter operation; essential in areas like packaging lines or other fully enclosed machinery. Efficient Space Utilisation Higher radial capacities are achieved without proportional increase in overall diameter, which helps designers to produce smaller gearboxs and housings.
The double-row cylindrical roller bearing has now been identified as not just another spare but rather a cost-saving improvement for operations run in multiple shifts or 24/7, where time means money.
Industry Applications
The Double Row Cylindrical Roller Bearing is really useful in different industries all over the world.
- Automotive: this Double Row Cylindrical Roller Bearing is used in car parts like transmission systems and gearboxes. It is also used in trucks and buses where it has to be strong and safe.
- Construction and Mining Equipment: These Roller Bearing is found in machines like excavators and crushers. It is also used in conveyor drives and rock drilling rigs where it has to be strong and work well even when it is dirty and used a lot.
- Industrial Manufacturing: These bearings are used in industries like paper manufacturing, steel production and machine tool manufacturing. they help a lot in these areas. Double Row Cylindrical Roller Bearings are made to be very precise and strong. This helps make sure the products are always good and the machines work well. It also helps prevent machines from breaking down. these bearings are really good, for paper manufacturing, steel production and machine tool manufacturing.
- Packaging Machinery: These bearings are used in machines that fill things and package them. They are also used in machines that put labels on things. Double Row Cylindrical Roller Bearings are made to work smoothly and quietly. This means the machine works well and does not break down often. Double Row Cylindrical Roller Bearings help to keep the machine running.
- Power Transmission and Steel Processing: The Double Row Cylindrical Roller Bearing is used in machines that make steel and other things. It has to be strong and work well all the time.
- Agricultural and Material Handling Equipment: The Double Row Cylindrical Roller Bearing is used in machines that harvest crops and move things around. It has to be strong and work well even when it is dirty and used outside.
Because Balaji Bearing India exports to OEMs and distributors on nearly every continent, its bearing range is engineered and tested to meet the diverse climate, load, and regulatory requirements of international customers, from humid coastal ports to dry, dust-heavy mining regions, and every plant environment in between.
Conclusion
Selecting the right Double Row Cylindrical Roller Bearing is essential for improving equipment reliability, minimizing maintenance costs, and maximizing operational efficiency. Designed to withstand heavy radial loads, high operating speeds, and demanding industrial environments, these bearings play a vital role in ensuring smooth and uninterrupted machine performance across industries such as steel, mining, construction, manufacturing, and power generation.
Balaji Bearing India supplies premium-quality Double Row Cylindrical Roller Bearings that are manufactured to meet stringent quality standards and deliver consistent performance in challenging applications. With a comprehensive range of sizes and configurations, expert technical guidance, competitive pricing, and efficient global distribution, we help businesses source the right bearing solutions with confidence. Whether you require standard products or bulk export orders, our commitment to quality, reliability, and customer satisfaction makes us a trusted partner for industrial bearing requirements worldwide.
Balaji Bearing Co.