3311 A-2RS1
Double Row Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
3311 A-2RS1
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
2.65 kg
Tolerance class
P6 (ABEC-3)
Seal type
Sealed
For load direction
Angular Contact
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
49.2 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Distance from side face to load point
73 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
25200 lbf
Radial static load rating
18338 lbf
Limiting speed
3.8 X 1000 rpm
Lubrication
Lubricated
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
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
3311 A-2RS1 Bearing Product Overview & Core Advantages
The 3311 A-2RS1 is a double row angular contact ball bearing designed for applications requiring high precision and reliability. This sealed bearing excels at simultaneously handling combined radial and bidirectional axial loads, making it ideal for compact arrangements where space is limited. Manufactured to P6 (ABEC-3) tolerance class, it delivers exceptional running accuracy and is pre-lubricated for immediate use, ensuring long-term performance and reduced maintenance needs.
3311 A-2RS1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 3311 | Basic bearing designation: 55 mm bore, 120 mm OD, 49.2 mm width. |
| A | Contact angle of 30°, optimized for carrying significant axial loads. |
| 2RS1 | Bearing is equipped with two-sided contact seals (RS1 type), providing excellent protection against contaminants and retaining lubricant. |
3311 A-2RS1 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and 30° contact angle provide superior stiffness and enable the bearing to support substantial combined loads (radial dynamic load rating: 25,200 lbf).
- Sealed & Lubricated for Life: The integral 2RS1 seals effectively shield the internal components from dust and moisture while retaining the factory-applied lubricant. This creates a maintenance-free solution for the entire service life in many applications.
- Precision Performance: Built to P6 tolerance class with a stainless steel cage, the bearing ensures smooth operation, low noise, and high running accuracy, suitable for demanding precision applications.
- Robust Construction: Components made from chrome steel offer high fatigue resistance and durability, supporting a wide operating temperature range from -30°C to 110°C.
3311 A-2RS1 Bearing Typical Application Areas
- Industrial Gearboxes and Power Transmission Systems
- Pumps and Compressors
- Material Handling Equipment
- Medium-duty Machine Tool Spindles
- Agricultural Machinery
- Various Industrial Machinery requiring robust, sealed bearings
