6311/C3W64
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6311/C3W64
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1350 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.015mm to 0
Width
29 mm
Width tolerance
-0.150mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
16096 lbf
Radial static load rating
10116 lbf
Limiting speed
5.6 X 1000 rpm
Lubrication
Soild Oil
Radial internal clearance
C3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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6311/C3W64 Bearing Product Overview & Core Advantages
The 6311/C3W64 is a high-performance, single row deep groove ball bearing engineered for robust operation under demanding conditions. This metric bearing is characterized by its ability to accommodate high radial loads and moderate axial loads in both directions. A key feature is its C3 radial internal clearance, which makes it suitable for applications involving thermal expansion or where interference fits are used. The integration of Soild Oil lubrication (W64) ensures long-term, maintenance-free operation, providing excellent reliability and a broad temperature range from -30°C to 120°C.
Model Code In-Depth Analysis
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| 6311 | Standard designation for a single row deep groove ball bearing with a 55mm bore, 120mm OD, and 29mm width. | Defines the core bearing dimensions and type. |
| C3 | Specifies a radial internal clearance greater than the Normal (CN) group. | Accommodates thermal expansion, prevents preload in high-temperature or tight-fit applications. |
| W64 | Indicates the bearing is pre-lubricated with Soild Oil (a solid polymer-based lubricant). | Enables maintenance-free operation, resists wash-out, and is suitable for a wide temperature range. |
6311/C3W64 Bearing Structural Features & Performance Benefits
- Robust Construction & High Load Capacity: Manufactured entirely from chrome steel, including rings, balls, and cage, this bearing delivers high strength and durability. With a dynamic load rating of 16,096 lbf and a static load rating of 10,116 lbf, it is designed to handle significant radial stresses.
- Optimized for Stable Operation: The C3 clearance is a critical feature for applications where shaft and housing fits, or operational temperatures, could otherwise lead to bearing seizure or excessive preload, ensuring stable performance.
- Maintenance-Free & Long Service Life: The Soild Oil (W64) lubrication is permanently sealed within the bearing, eliminating the need for re-lubrication. This makes it ideal for sealed-for-life applications and harsh environments where liquid lubricants would fail.
- Precision for General Applications: Conforming to ABEC 1 | ISO P0 tolerance class, this bearing provides the precision and running accuracy required for a wide range of industrial machinery.
6311/C3W64 Bearing Typical Application Areas
This versatile bearing is commonly specified in industries and equipment where reliability and minimal maintenance are paramount. Key applications include:
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Material Handling Conveyors
- Agricultural Machinery
- Construction Equipment
