6312-2RS1/HC5C3GJN
6000 Series HC5/HC5C3 Hybrid Ceramic Bearings
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Part No.
Part No.
6312-2RS1/HC5C3GJN
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1699 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.018mm to 0
Width
31 mm
Width tolerance
-0.150mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
18412 lbf
Radial static load rating
11735 lbf
Limiting speed
5.3 X 1000 rpm
Lubrication
None
Radial internal clearance
C3
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 265.8
/ each
In Stock
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6312-2RS1/HC5C3GJN Bearing Product Overview & Core Advantages
The 6312-2RS1/HC5C3GJN is a sealed single row deep groove ball bearing engineered for superior performance in demanding applications. Its core advantages stem from a unique material combination: Silicon Nitride (Si3N4) ceramic balls paired with chrome steel rings. This hybrid construction delivers exceptional benefits, including higher speed capabilities, reduced operating temperature, and extended service life compared to all-steel equivalents. The integral 2RS1 rubber seals effectively protect the bearing from contamination while retaining lubricant, ensuring reliable operation. With a C3 radial internal clearance, it is ideally suited for applications where thermal expansion is a factor.
6312-2RS1/HC5C3GJN Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 6312 | Standard Bearing Series & Size | Denotes a medium-duty deep groove ball bearing with a 60mm bore, 130mm OD, and 31mm width. |
| 2RS1 | Contact Rubber Seals on Both Sides | Provides excellent protection against contaminants and moisture, making the bearing maintenance-free in many applications. |
| HC5 | Hybrid Ceramic (Si3N4 Balls) | The use of ceramic balls reduces friction, weight, and inertia, enabling higher limiting speeds and superior performance in electrically sensitive environments. |
| C3 | Greater than Normal Radial Internal Clearance | Accommodates thermal expansion in the shaft or housing, preventing preload and potential seizure in high-temperature applications. |
| GJN | Grease Type | Indicates the specific high-performance grease used, optimized for the bearing's operating temperature range. |
6312-2RS1/HC5C3GJN Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride balls significantly reduces friction and heat generation. This results in a higher limiting speed (5,300 rpm) and allows for operation with less lubrication. The ceramic balls are also electrically insulating, reducing the risk of electrical erosion.
- Robust Sealing: The 2RS1 rubber seals with steel reinforcements provide a high degree of protection against dust, dirt, and moisture. This feature is critical for maintaining performance and longevity in harsh environments, contributing to the bearing's maintenance-free characteristics.
- Optimized Internal Clearance: The C3 radial clearance is a key feature for applications subject to significant thermal gradients or press-fits. It ensures smooth, unhindered rotation by providing extra space for thermal expansion, thereby preventing binding and premature failure.
- High Load Capacity: With a dynamic load rating of 18,412 lbf and a static load rating of 11,735 lbf, this bearing is designed to handle substantial radial loads and moderate axial loads in both directions.
6312-2RS1/HC5C3GJN Bearing Typical Application Areas
This bearing's unique combination of speed, sealing, and hybrid technology makes it ideal for a range of demanding sectors:
- Electric Motors & Generators: Especially high-frequency spindles and motors where high speeds and protection from electrical arcing are paramount.
- Precision Machine Tools: Spindles for milling, grinding, and other high-speed machining centers.
- Pumps and Compressors: Applications requiring reliable, sealed bearings to handle fluid or gas environments.
- Agricultural and Construction Machinery: Components in harsh, dusty, or wet conditions that benefit from robust sealing.
- Material Handling Systems: Conveyor pulleys and rollers where reliability and minimal maintenance are key.
