FAG Spherical Roller Bearings
Reliable Performance for Heavy-Duty Applications
Supplied by Jai Krishna Bearing House – Trusted Dealer
In heavy industries, machines work under extreme load, high temperature, dust, vibration, and continuous operation. In such demanding conditions, ordinary bearings cannot survive for long. Industries need strong, durable, and high-performance bearings that can handle heavy radial and axial loads while maintaining smooth rotation.
This is where FAG Spherical Roller Bearings play a very important role.
Manufactured by FAG, a globally respected bearing brand under the Schaeffler Group, FAG spherical roller bearings are designed for heavy-duty and high-load applications.
Jai Krishna Bearing House is a trusted dealer of FAG spherical roller bearings, supplying genuine products to industries with competitive pricing, ready stock availability, and strong technical guidance.
What is a FAG Spherical Roller Bearing?
A spherical roller bearing is a type of rolling-element bearing designed to handle:
Very high radial loads
Moderate to high axial loads (in both directions)
Misalignment between shaft and housing
It has two rows of barrel-shaped rollers arranged symmetrically. The outer ring has a spherical raceway, which allows the bearing to self-align.
This self-aligning feature makes it ideal for applications where:
Shaft deflection occurs
Misalignment is unavoidable
Heavy shock loads are present
Basic Construction of FAG Spherical Roller Bearings
A typical FAG spherical roller bearing consists of:
Inner Ring with two raceways
Outer Ring with spherical raceway
Two rows of barrel-shaped rollers
Cage (steel, brass, or polyamide)
Seals (in sealed variants)
The spherical outer ring design allows angular misalignment without reducing performance.
Working Principle
When the shaft rotates:
Rollers rotate between inner and outer raceways
Load is distributed evenly across rollers
The spherical outer ring allows automatic alignment
This reduces stress concentration and increases bearing life.
Because of the two-row design, the bearing can carry heavy radial load and axial load in both directions.
Technical Features of FAG Spherical Roller Bearings
1. High Load Carrying Capacity
FAG spherical roller bearings are specially designed for:
Heavy industrial machinery
Mining equipment
Cement plants
Steel industry
Their internal geometry ensures high dynamic and static load ratings.
2. Self-Aligning Capability
One of the biggest advantages is self-alignment.
It can compensate for:
Shaft bending
Mounting errors
Housing deformation
This prevents premature failure.
3. Robust Cage Design
FAG provides different cage types:
Steel cage (strong and durable)
Brass cage (heavy-duty applications)
Polyamide cage (lightweight and low noise)
Proper cage selection increases bearing efficiency.
4. Long Service Life
Because of:
Optimized internal geometry
High-quality steel
Advanced heat treatment
FAG bearings provide long operational life even under tough conditions.
5. Low Friction and Temperature Control
Despite heavy load capacity, FAG spherical roller bearings are designed to:
Reduce friction
Control heat generation
Maintain smooth rotation
This improves overall machine efficiency.
Types of FAG Spherical Roller Bearings
1. Standard Open Type
Used in general heavy industrial applications
Requires external lubrication
2. Sealed Spherical Roller Bearings
Pre-lubricated
Prevent dust and contamination
Suitable for harsh environments
3. Split Spherical Roller Bearings
Easy installation without removing shaft
Ideal for large industrial setups
Technical Parameters to Consider
When selecting FAG spherical roller bearings, the following factors must be considered:
1. Load Calculation
Total load includes:
Radial load
Axial load
Shock load
Correct load calculation increases bearing life.
2. Speed Requirement
Each bearing has a limiting speed.
High-speed applications require proper lubrication and clearance selection.
3. Internal Clearance
Clearance types:
Normal clearance
C3 clearance
C4 clearance
For high-temperature or heavy-load applications, C3 or C4 clearance is preferred.
4. Lubrication
Lubrication is critical for long life.
Options:
Grease lubrication
Oil lubrication
Proper lubrication prevents:
Wear
Overheating
Rust
Applications of FAG Spherical Roller Bearings
These bearings are widely used in:
Cement Industry
Used in crushers, kilns, conveyors.
Mining Industry
Used in heavy crushers and vibrating screens.
Steel Plants
Used in rolling mills and heavy equipment.
Paper Industry
Used in drying cylinders and heavy rollers.
Power Plants
Used in turbines and heavy rotating machinery.
Construction Equipment
Used in heavy-duty rotating systems.
Advantages of FAG Spherical Roller Bearings
✔ High radial and axial load capacity
✔ Self-aligning design
✔ Long service life
✔ Strong cage construction
✔ Suitable for harsh en
