6311-2RS1NR/C3
6300 Series Snap Ring Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
6311-2RS1NR/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1350 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Sealed
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 (fitted)
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
Price:
$ 28.42
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
6311-2RS1NR/C3 Bearing Product Overview & Core Advantages
The 6311-2RS1NR/C3 is a single row deep groove ball bearing engineered for robust performance in demanding applications. This sealed bearing is designed to handle significant radial loads and moderate axial loads in both directions. Its key advantages include a snap ring groove on the outer ring for simplified axial location and a C3 radial internal clearance for stable operation under thermal expansion. Pre-lubricated and sealed for life, it offers a maintenance-free solution with high reliability.
6311-2RS1NR/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| 2RS1 | Contact seals on both sides, providing excellent protection against contamination and retaining lubricant. |
| NR | Snap ring groove on the outer ring, enabling secure and cost-effective axial positioning within the housing. |
| C3 | Greater than normal radial internal clearance, suitable for applications with thermal expansion or where interference fits are used. |
6311-2RS1NR/C3 Bearing Structural Features & Performance Benefits
- Robust Construction & High Load Capacity: Manufactured from chrome steel for rings, balls, and cage, this bearing delivers high strength and durability. It is rated for a dynamic load of 16,096 lbf and a static load of 10,116 lbf, making it suitable for heavy-duty applications.
- Maintenance-Free Operation: The integral contact seals (2RS1) effectively shield the bearing from contaminants like dust and moisture while retaining the factory-applied grease. This creates a "sealed for life" solution, eliminating the need for re-lubrication.
- Simplified Assembly & Axial Location: The snap ring groove (NR) on the outer ring allows for easy and secure mounting, reducing assembly time and complexity by providing a positive axial location in the housing.
- Operational Stability: The C3 clearance provides extra internal space, preventing preload and ensuring smooth, reliable performance in applications prone to thermal expansion or where tight fits are used.
6311-2RS1NR/C3 Bearing Typical Application Areas
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Material Handling Equipment (Conveyors, Pulleys)
- Agricultural Machinery
- General Industrial Machinery requiring reliable, maintenance-free ball bearings
