NTN Spherical Roller Bearings
Reliable Heavy-Duty Bearing Solutions
By Jai Krishna Bearing House – Dealer in NTN Bearings
In heavy industrial applications, machines often operate under high load, vibration, and misalignment conditions. To ensure smooth operation and long service life, NTN Spherical Roller Bearings are one of the most trusted solutions worldwide.
At Jai Krishna Bearing House, we are a trusted dealer in NTN bearings, supplying genuine products for various industrial requirements. We provide proper product guidance and support to help customers choose the right bearing for their application.
About NTN Corporation
NTN Corporation is a globally recognized Japanese company known for manufacturing high-quality bearings and precision products. With decades of experience in bearing technology, NTN is known for durability, high load capacity, and excellent engineering standards.
NTN spherical roller bearings are widely used in industries such as steel plants, cement plants, mining, paper mills, power generation, and heavy machinery.
What is an NTN Spherical Roller Bearing?
A spherical roller bearing is a type of rolling-element bearing designed to support:
Heavy radial loads
Moderate to high axial loads (both directions)
Shaft misalignment
It has:
Two rows of barrel-shaped rollers
A common spherical outer ring raceway
An inner ring with two raceways
Because of its spherical outer ring design, it can automatically adjust to shaft misalignment, making it ideal for heavy-duty industrial environments.
Design & Construction
1. Outer Ring
Features a spherical raceway
Allows self-alignment
Compensates for angular misalignment
2. Inner Ring
Two raceways
Mounted on shaft
Available with cylindrical or tapered bore
3. Rollers
Barrel-shaped rollers
Provide high load carrying capacity
Reduce stress concentration
4. Cage
NTN offers different cage types:
Steel cage
Brass cage
Polyamide cage (in some models)
The cage keeps rollers evenly spaced and reduces friction.
Technical Features of NTN Spherical Roller Bearings
1. High Load Carrying Capacity
NTN spherical roller bearings are designed to carry:
Very high radial loads
Combined radial and axial loads
They are suitable for heavy shock loads and vibrating conditions.
2. Self-Aligning Capability
Can handle shaft misalignment up to 1–2 degrees
Reduces stress on shaft and housing
Prevents premature bearing failure
3. Long Service Life
High-quality steel material
Advanced heat treatment
Precision manufacturing
Optimized internal geometry
This ensures longer operational life even in harsh environments.
4. Low Friction & High Efficiency
Optimized roller profile
Smooth raceway surface finish
Reduced heat generation
This improves machine efficiency and reduces energy consumption.
5. High Speed Capability
Although mainly designed for heavy loads, NTN spherical bearings can operate at moderate speeds depending on lubrication and mounting conditions.
Types of NTN Spherical Roller Bearings
1. Cylindrical Bore Type
Straight bore
Direct shaft mounting
Common in industrial machinery
2. Tapered Bore Type (Suffix K)
Used with adapter sleeve
Easy mounting and dismounting
Common in heavy-duty applications
Technical Specifications (General Overview)
Parameter Specification
Bore Diameter 20 mm to 1000 mm+
Load Type Radial & Axial
Misalignment Up to 2°
Cage Type Steel / Brass
Lubrication Grease or Oil
Operating Temperature -20°C to 200°C (depending on lubrication)
Sealing Option Open / Sealed
Common NTN Spherical Bearing Series
Some commonly used NTN series include:
22200 Series
22300 Series
23000 Series
23100 Series
23200 Series
24000 Series
24100 Series
Each series is designed for specific load capacities and dimensional requirements.
Applications of NTN Spherical Roller Bearings
NTN spherical roller bearings are widely used in:
1. Steel Plants
Rolling mills
Continuous casting machines
2. Cement Industry
Kilns
Crushers
Ball mills
3. Mining Industry
Vibrating screens
Conveyors
Crushers
4. Paper Mills
Dryers
Press sections
5. Power Plants
Generators
Cooling towers
6. Construction Equipment
Excavators
Heavy loaders
Advantages of NTN Spherical Roller Bearings
✔ High radial load capacity
✔ Handles misalignment
✔ Strong shock resistance
✔ Long operational life
✔ Suitable for harsh environments
✔ Reliable performance
Mounting & Maintenance Guidelines
Proper installation is very important for long bearing life.
Mounting Tips:
Clean shaft and housing properly
Use proper tools for mounting
Avoid hammering directly on bearing
Check alignment
Use recommended lubrication
Lubrication:
Use high-quality grease or oil
Maintain correct lubrication interval
Avoid over-lubrication
Our team at Jai Krishna Bearing House can guide you in selecting the right bearing and provide technical suggestions for installation and maintenance.
Why Choose Jai Krishna Bearing House?
1. Trusted Dealer in NTN Bear
