6311-2ZNR
6300 Series Snap Ring Bearings
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Part No.
Part No.
6311-2ZNR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.46 kg
Tolerance class
P0
Seal type
Shielded
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
-0.15mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
129.7 mm
Width of snap ring
2.82 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
16658 lbf
Radial static load rating
10116 lbf
Limiting speed
6.3 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:
$ 33.03
/ each
In Stock
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6311-2ZNR Bearing Product Overview & Core Advantages
The 6311-2ZNR is a single row deep groove ball bearing designed for exceptional performance in demanding applications. This precision bearing excels at handling primarily radial loads while also accommodating moderate axial loads in both directions. Its key advantages include a shielded design for contamination protection and an integrated snap ring on the outer ring for simplified axial location and secure mounting within a housing, contributing to a compact and robust assembly. Manufactured to P0 tolerance class, it ensures reliable operation and is pre-lubricated with grease for long service life.
6311-2ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| -2Z | Non-contact steel shields on both sides | Provides effective protection against contamination while maintaining high-speed capability and low friction. |
| -NR | Snap ring groove with snap ring fitted on the outer ring | Enables secure axial positioning, simplifies housing design, and reduces assembly time and cost. |
6311-2ZNR Bearing Structural Features & Performance Benefits
- Robust Construction & High Load Capacity: Built with chrome steel rings and balls, combined with a stainless steel cage, this bearing offers a high radial dynamic load rating of 16,658 lbf and a radial static load rating of 10,116 lbf, ensuring durability under significant stress.
- Optimized for Speed & Efficiency: The non-contact shields and precision-ground components allow for a limiting speed of 6,300 rpm, making it suitable for a wide range of high-speed applications.
- Simplified Assembly & Maintenance: The integrated snap ring (fitted) eliminates the need for separate locating components, streamlining the installation process. The pre-applied grease lubrication and shielded design contribute to a long-lasting, low-maintenance solution within its specified temperature range of -30°C to 120°C.
6311-2ZNR Bearing Typical Application Areas
This versatile bearing is ideal for applications requiring reliable performance and simplified mounting. Common uses include:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
