3307 A
Double Row Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
3307 A
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.74 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.011mm to 0
Width
34.9 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
47 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12150 lbf
Radial static load rating
8550 lbf
Limiting speed
8.5 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
Price:
$ 16.75
/ each
In Stock
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3307 A Bearing Product Overview & Core Advantages
The 3307 A is a double row angular contact ball bearing engineered for applications requiring high precision and robust performance. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and axial loads in both directions. Its compact design, featuring optimized bearing dimensions (35 mm bore, 80 mm OD, 34.9 mm width), provides a high-stiffness solution for space-constrained, high-reliability machinery. Manufactured to a P6 (ABEC-3) tolerance class, it ensures exceptional running accuracy and consistent operation.
Model Code Breakdown
| Suffix | Technical Meaning |
|---|---|
| A | Designates a 30° contact angle, optimized for carrying high axial loads. |
| (No Seal Suffix) | Indicates an open (non-shielded/non-sealed) construction, suitable for systems with external lubrication. |
3307 A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and 30° contact angle create an exceptionally rigid structure capable of supporting high radial dynamic load ratings of 12,150 lbf and static load ratings of 8,550 lbf. This design is ideal for applications with demanding combined loads.
- High-Speed Capability: The bearing incorporates a lightweight, durable stainless steel cage that minimizes centrifugal forces, contributing to a high limiting speed of 8,500 rpm. The open design allows for efficient lubrication and heat dissipation.
- Precision & Longevity: Manufactured from chrome steel for both rings and balls, and built to P6 precision tolerances, this bearing ensures low vibration, smooth operation, and extended service life in precision machinery.
3307 A Bearing Typical Application Areas
This double row angular contact ball bearing is ideally suited for:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Precision Gearboxes
- Material Handling Equipment
- Agricultural and Construction Machinery
