6311-Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6311-Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.39 kg
Tolerance class
P6
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.013mm to 0
Width
29 mm
Width tolerance
-0.15mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
16658 lbf
Radial static load rating
10116 lbf
Limiting speed
8 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 26.12
/ each
In Stock
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6311-Z Bearing Product Overview & Core Advantages
The 6311-Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered to primarily handle radial loads, it features integral shielded protection, making it a robust and reliable choice. Its P6 tolerance class ensures high running accuracy, while the stainless steel cage and pre-applied grease lubrication contribute to smooth operation and long service life across a wide temperature range from -30°C to 120°C.
6311-Z Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Interpretation | Technical Significance |
|---|---|---|
| 6311 | Basic Bearing Code | Denotes a metric, single row deep groove ball bearing with a 55 mm bore, 120 mm OD, and 29 mm width. |
| -Z | Shield Designation | Indicates the bearing is equipped with a non-contact shield on one side, offering effective protection against contaminants while minimizing friction. |
6311-Z Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to a P6 tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing provides high running accuracy and stable support for shafts.
- Optimized Load Capacity: The deep groove raceway and robust construction enable high radial dynamic load rating of 16,658 lbf and a radial static load rating of 10,116 lbf, making it suitable for significant radial forces.
- Enhanced Durability & Speed: The stainless steel cage provides strength and corrosion resistance, contributing to a high limiting speed of 8,000 rpm. The standard CN radial internal clearance is suitable for most common operating conditions.
- Maintenance-Friendly Operation: The Z shield helps retain the factory-applied grease lubrication and excludes larger particulate contaminants, promoting a long, maintenance-free service interval.
6311-Z Bearing Typical Application Areas
This bearing is ideally suited for a wide range of industrial machinery and equipment, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
