Looking for SKF 623 bearing equivalents?
Below is the complete cross reference table listing interchangeable models from major international bearing manufacturers. All bearings listed comply with ISO miniature deep groove ball bearing standards and share identical dimensions (3×10×4 mm).
This page helps you quickly identify SKF 623 replacement options for maintenance, repair, and industrial sourcing.
SKF 623 Cross Reference Table
| Brand | Equivalent Model |
|---|---|
| SKF | 623 |
| NSK | 623 |
| NTN | 623 |
| KOYO | 623 |
| FAG | 623 |
| NACHI | 623 |
| SNR | 623 |
| RHP | 623 |
| STEYR | 623 |
All above models are dimensionally interchangeable.
SKF 623 Bearing Dimensions (Verification Data)
To ensure correct replacement, always confirm bearing dimensions:
| Parameter | Value |
|---|---|
| Bore Diameter (d) | 3 mm |
| Outer Diameter (D) | 10 mm |
| Width (B) | 4 mm |
| Bearing Type | Deep Groove Ball Bearing |
| Structure | Single Row |
All equivalent models listed in the cross reference table share the same 3 mm × 10 mm × 4 mm dimensions.
SKF 623 Variants and Suffix Differences
When searching for replacements, you may encounter different suffixes. These indicate sealing type or internal clearance.
| Model | Description |
|---|---|
| 623 | Open type, no seals |
| 623-ZZ / 623-2Z | Metal shields on both sides |
| 623-2RS1 | Rubber seals on both sides |
| 623 C3 | Increased internal radial clearance |
Important:
If your original bearing includes seals or C3 clearance, the replacement model must match the same specification.
Example:
-
SKF 623-2RS1 → NSK 623-2RS
-
SKF 623-ZZ → NTN 623ZZ
Is NSK 623 the Same as SKF 623?
Yes. NSK 623, NTN 623, KOYO 623, FAG 623 and other major brands use standardized ISO dimensions for miniature deep groove ball bearings.
However, differences may exist in:
-
Internal clearance tolerance
-
Lubrication type
-
Material quality
-
Manufacturing precision
For critical applications, verify load ratings and speed limits before substitution.
Load and Performance Reference (Typical Values)
Although dimensions are standardized, performance ratings may vary slightly by manufacturer.
Typical values for 623 bearing:
-
Dynamic Load Rating (Cr): approx. 0.6 kN
-
Static Load Rating (Cor): approx. 0.24 kN
-
Limiting Speed (Grease): up to 60,000+ rpm
Always consult the specific manufacturer’s catalog for exact ratings.
Applications of 623 Deep Groove Ball Bearings
The 623 miniature bearing is widely used in:
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Small electric motors
-
Cooling fans
-
Office automation equipment
-
Power tools
-
Home appliances
-
Robotics and hobby devices
-
Precision instruments
Its compact size and high-speed capability make it ideal for light-load radial applications.
How to Confirm the Correct SKF 623 Replacement
Before selecting an equivalent model, confirm:
-
Bore, outer diameter, and width (3×10×4 mm)
-
Seal type (Open / ZZ / 2RS1)
-
Internal clearance (CN or C3)
-
Operating speed
-
Load requirements
If these parameters match, cross-brand replacement is generally acceptable.
Frequently Asked Questions
What does SKF 623 mean?
623 is a miniature single-row deep groove ball bearing with 3 mm bore diameter.
Are all 623 bearings interchangeable?
Yes, dimensionally interchangeable under ISO standard, but performance ratings may vary slightly.
Can I replace SKF 623 with NSK 623?
Yes, provided the seal type and clearance specification are the same.
What is the difference between 623 and 623-ZZ?
623 is open type; 623-ZZ has metal shields on both sides.
Summary
SKF 623 bearing equivalents are widely available from major international brands including NSK, NTN, KOYO, FAG, and others. All standard models share identical dimensions (3×10×4 mm), making cross-brand substitution straightforward when specifications are matched.
For industrial maintenance and OEM sourcing, always verify sealing type, clearance, and load rating before replacement.