3310 DMA
Double Row Angular Contact Ball Bearings
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Part No.
Part No.
3310 DMA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
2.2 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.013mm to 0
Width
44.4 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Distance from side face to load point
88 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
76.5 mm
Outer Ring Dimensions
Shoulder diameter outer ring
94.2 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
21060 lbf
Radial static load rating
19125 lbf
Limiting speed
5.6 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 122.85
/ each
In Stock
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3310 DMA Bearing Product Overview & Core Advantages
The 3310 DMA is a double row angular contact ball bearing designed for applications requiring high precision and exceptional rigidity. This metric bearing excels at simultaneously handling combined radial and axial loads from both directions, making it an ideal choice for compact, high-performance assemblies. Manufactured to a P6 (ABEC-3) tolerance class, it ensures reliable operation and positional accuracy in demanding environments.
3310 DMA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| D | Double row angular contact design |
| M | Brass cage (machined) |
| A | 30° contact angle, optimized for axial load capacity |
3310 DMA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling stable support under combined loads. With a radial dynamic load rating of 21,060 lbf and a static rating of 19,125 lbf, it is built for durability.
- Precision Performance: The P6 tolerance class ensures minimal runout and high rotational accuracy. The brass cage (M) offers excellent strength and guidance at the limiting speed of 5,600 rpm.
- Optimized for Preload: The specific internal geometry, including the 30° contact angle, makes this bearing suitable for preloaded arrangements, further enhancing system rigidity.
- Material & Construction: Components made from chrome steel provide high hardness and fatigue resistance, ensuring a long service life in a temperature range of -30°C to 110°C.
3310 DMA Bearing Typical Application Areas
This bearing is commonly specified in:
- Machine Tool Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- High-Rigidity Support Units in automation and robotics
