6311-ZNBRJEM/C3
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6311-ZNBRJEM/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1350 g
Tolerance class
ABEC 1 | ISO 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
-0.150mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring Groove
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
None
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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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6311-ZNBRJEM/C3 Bearing Product Overview & Core Advantages
The 6311-ZNBRJEM/C3 is a high-performance, single row deep groove ball bearing engineered for demanding industrial applications. Its core advantages stem from a combination of a snap ring groove on the outer ring for secure axial location and a C3 radial internal clearance, making it exceptionally suitable for applications with thermal expansion or where interference fits are used. The shielded design offers effective protection against contaminant ingress while maintaining high-speed capability. Manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing delivers reliable performance, high radial dynamic load capacity (16,096 lbf), and stable operation across a wide temperature range.
6311-ZNBRJEM/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| Z | Shielded on one side | Protects bearing internals from contaminants like dust. |
| N | Snap ring groove on the outer ring | Enables simple and secure axial location within a housing, reducing assembly complexity. |
| BR | Brass cage | Provides high strength, good wear resistance, and suitability for higher speeds and demanding conditions. |
| JEM | JEM steel (Chrome Steel) for rings and balls | Ensures high hardness, durability, and long service life under heavy loads. |
| /C3 | Greater than normal radial internal clearance | Accommodates thermal expansion from high speeds or heavy loads, preventing premature failure due to binding. |
6311-ZNBRJEM/C3 Bearing Structural Features & Performance Benefits
- Robust Construction & High Load Capacity: The single row deep groove raceway and brass cage are designed to handle significant radial loads (16,096 lbf dynamic) and moderate axial loads in both directions. The use of high-grade chrome steel for all critical components ensures maximum durability.
- Secure Axial Location: The integrated snap ring groove on the outer ring simplifies housing design by providing a positive locating feature, which enhances the overall stability of the assembly.
- Optimized for Challenging Conditions: The C3 clearance is a critical feature for applications prone to thermal expansion, such as in electric motors or gearboxes, ensuring consistent performance and preventing internal preload.
- Effective Contamination Protection: The shielded design helps retain lubricant and exclude larger particulate contaminants, contributing to a longer and more reliable service life.
- Precision Performance: Manufactured to ABEC 1 (ISO P0) precision class, this bearing offers smooth, low-vibration, and low-noise operation, making it suitable for a wide range of industrial machinery.
6311-ZNBRJEM/C3 Bearing Typical Application Areas
This versatile bearing is ideally suited for applications requiring secure mounting and reliable performance under radial loads and thermal variations.
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Agricultural Machinery
- Material Handling Equipment (e.g., conveyor systems)
- General Industrial Machinery requiring a housed bearing unit solution.
