KGI 62203 2RS C3 Deep Groove Ball Bearing
The KGI 62203 2RS C3 is part of the specialized "Wide Series" deep groove ball bearing family. It features a 17mm bore, a 40mm outside diameter, and an extended 16mm width. This design provides 4mm of additional axial space compared to the standard 6203 series (which has a 12mm width); therefore, verify your housing and shaft clearance to ensure compatibility.
10020013211
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Product Detail
Wide Series Deep Groove Ball Bearing KGI 62203 2RS C3 16mm Width | C3 Thermal Clearance | 2RS Rubber Seals | 17mm Shaft Diameter
Engineered for applications requiring a wider bearing profile, superior double-sided sealing, and C3 internal clearance for thermal stability.
Technical Overview: KGI 62203 2RS C3
The KGI 62203 2RS C3 is part of the specialized "Wide Series" deep groove ball bearing family. It features a 17mm bore, a 40mm outside diameter, and an extended 16mm width. This design provides 4mm of additional axial space compared to the standard 6203 series (which has a 12mm width); therefore, verify your housing and shaft clearance to ensure compatibility.
The 2RS suffix denotes contact rubber seals on both sides, which are essential for retaining lubricant and preventing the ingress of dust and moisture. The C3 radial internal clearance allows for thermal expansion during high-speed or warm operation, ensuring smooth performance without internal binding.
Anatomy & Part Number Decoding
Number 6: Denotes the deep groove ball bearing category.
Numbers 22: Indicates the "Wide Series" dimensional category.
Bore Code 03: The standard bearing coefficient for a 17mm bore diameter.
Suffix 2RS: Equipped with double-sided NBR rubber seals to protect against contaminants and lubricant leakage.
Suffix C3: Greater-than-normal radial internal clearance; optimized to absorb thermal stress and prevent pre-loading.
Dimensions & Engineering Specifications
| Bore (d) | O.D (D) | Width (B) | Clearance | Seal Type | Brand |
|---|---|---|---|---|---|
| 17 mm | 40 mm | 16 mm | C3 | 2RS (Rubber) | KGI |
Note: These are standard nominal dimensions. Always cross-reference with your equipment manual or existing part specifications before installation.
Key Competitive Advantages
Wide Series Profile
With a 16mm width (4mm wider than 6203), this bearing provides increased axial stability and surface area, provided your housing supports the wider profile.
2RS Contact Sealing
NBR rubber seals ensure superior protection against abrasive dust, moisture, and debris, maintaining the integrity of the internal lubricant.
C3 Internal Clearance
Provides extra internal space, effectively absorbing thermal expansion from the shaft and housing to prevent binding in high-temperature applications.
High-Precision Load Support
The deep groove geometry allows for excellent radial load support and limited axial load capacity in either direction.
Maintenance-Ready Design
Pre-lubricated with high-grade industrial grease, reducing the need for initial maintenance after installation.
Typical Applications
- Electric Motors: Supporting smooth rotation with thermal compensation.
- Power Transmission: Gearbox idlers and shafts where extra width is accommodated.
- Agricultural Machinery: Reliable performance in dusty or exposed environments.
- Conveyors & Rollers: Where standard width is insufficient for load stability.
- General Industrial Repairs: Compatible with equipment designed for wide-profile 622xx bearings.
Comparison: 62203 vs. 6203
While both bearings feature the same 17mm bore and 40mm outside diameter, they are not interchangeable without checking your setup:
- Width Difference: The 62203 is 16mm wide, while the standard 6203 is only 12mm wide.
- Space Requirements: Ensure your housing and shaft can accommodate the additional 4mm axial space required by the 62203.
- Selection Tip: Always match the internal clearance (C3) and seal type (2RS) with your existing part or design specifications.
Installation & Maintenance Best Practices
1. Check Axial Space
Verify that your machinery can accommodate the 16mm width. Using a wider bearing in a housing designed for a 12mm bearing will cause improper seating or interference.
2. Proper Press-Fitting
Apply force only to the race being pressed (inner race for shaft fit, outer race for housing fit). Never press against the rubber seals or through the balls.
3. C3 Clearance Consideration
C3 is designed for specific thermal environments. Confirm that your fit is appropriate for this clearance class to ensure optimal load distribution.
4. Protect the Seals
Avoid contact with sharp tools near the rubber 2RS seals. Damaging these seals will allow debris to enter, drastically reducing the bearing's service life.
Frequently Asked Questions (FAQ)
1. What are the dimensions of the KGI 62203?
Bore: 17mm | O.D: 40mm | Width: 16mm.
2. Can I replace a 6203 with a 62203?
Only if your setup has 4mm of extra axial space. If the housing is limited to 12mm, it will not fit.
3. What does C3 Clearance mean?
It means the internal clearance is greater than normal, allowing the bearing to run smoothly despite thermal expansion or interference fits.
4. What is the difference between 2RS and ZZ?
2RS uses contact rubber seals (best for dirt/moisture). ZZ uses non-contact metal shields (best for clean, high-speed environments).
Conclusion
The KGI 62203 2RS C3 is an excellent choice for applications requiring a 17mm shaft, wide-series dimensional support, and reliable environmental sealing. It provides a robust solution for diverse industrial machinery when dimensions are verified correctly.
Inquire About KGI 62203 2RS C3
Contact our sales team for availability, bulk pricing, and technical support regarding your specific application requirements.
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