What is SKF 6400 Series Deep Groove Ball Bearings
SKF 6400 series deep groove ball bearings are single row radial bearings designed for high load capacity, durability and reliable operation in heavy industrial applications.
The SKF 6400 series belongs to the large size segment of deep groove ball bearings, offering increased load carrying capability compared to standard series such as 6200 and 6300.
These bearings are widely used in demanding industrial systems, heavy machinery and power transmission applications across global B2B markets.
Structure and design of SKF 6400 series bearings
SKF 6400 series bearings are engineered with larger rolling elements and deeper raceways to handle higher loads while maintaining smooth rotation.
They support:
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high radial loads
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moderate axial loads in both directions
Key design features:
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reinforced internal geometry
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larger ball size for increased load capacity
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precision raceways for smooth operation
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high strength SKF bearing steel
This design ensures durability and reliability under heavy duty conditions.
Common SKF 6400 bearing sizes
Typical SKF 6400 series sizes include:
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SKF 6403 17x62x17
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SKF 6404 20x72x19
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SKF 6405 25x80x21
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SKF 6406 30x90x23
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SKF 6407 35x100x25
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SKF 6408 40x110x27
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SKF 6409 45x120x29
These sizes are used in medium to heavy industrial applications requiring higher load capacity.
Available SKF variants and configurations
SKF 6400 series bearings are available in multiple configurations:
OPEN
Maximum speed with external lubrication.
ZZ shielded
Metal shields provide protection while maintaining high speed capability.
2RS sealed
Rubber seals for protection against dust and contaminants.
C3 clearance
Increased internal clearance for higher temperatures and heavy loads.
C4 clearance
Extra clearance for extreme industrial conditions.
Technical specification overview
Type: deep groove ball bearing
Series: SKF 6400
Design: single row heavy duty
Sealing options: OPEN, ZZ, 2RS
Clearance options: normal, C3, C4
Technical snippet:
SKF 6400 series bearings provide high load capacity, durability and reliable performance in heavy duty industrial applications.
Industrial applications of SKF 6400 bearings
SKF 6400 series bearings are widely used in demanding industrial environments:
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heavy duty electric motors
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industrial gearboxes
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large pumps and compressors
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conveyors and production lines
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construction and mining machinery
They are suitable for both OEM production and heavy industrial maintenance.
How to choose the right SKF 6400 bearing
Selecting the correct SKF 6400 bearing depends on operating conditions:
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choose OPEN for high speed applications
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choose ZZ for moderate protection
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choose 2RS for contaminated environments
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choose C3 for high temperature and load
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choose C4 for extreme industrial conditions
Proper selection improves performance and extends service life.
Main description
SKF 6400 series deep groove ball bearings are designed to deliver high load capacity, durability and reliable performance in demanding industrial applications.
As part of the SKF deep groove ball bearing category, the 6400 series represents a heavy duty segment used in large scale machinery and industrial systems. These bearings are widely used in global B2B markets, bearing shop online platforms and industrial supply chains.
Compared to smaller series such as 6200 and 6300, SKF 6400 bearings offer increased load capacity and improved durability, making them suitable for more demanding environments.
Their standardized dimensions ensure compatibility with a wide range of industrial equipment, while multiple variants such as OPEN, ZZ, 2RS, C3 and C4 allow precise adaptation to operating conditions.
From heavy machinery to industrial drive systems, SKF 6400 series bearings provide a reliable solution for continuous operation.
They are engineered to reduce downtime, improve efficiency and support high performance industrial systems.
FAQ
What are SKF 6400 series bearings used for
They are used in heavy machinery and industrial systems.
What is the difference between SKF 6300 and 6400 series
SKF 6400 offers higher load capacity.
Are SKF 6400 bearings suitable for high speed
Yes, but they are optimized for load capacity.
What does C3 mean in SKF 6400 bearings
It indicates increased internal clearance.
Which SKF 6400 bearing is commonly used
SKF 6405 and SKF 6406 are widely used.
Summary
SKF 6400 series deep groove ball bearings provide high load capacity and durability for heavy industrial applications.
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