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NTN 3308C3 33 series double-row angular contact ball bearing with a 40 mm straight bore. Open design with C3 clearance accommodates thermal expansion. Suitable for pumps, compressors, and gearboxes requiring combined radial and axial load capacity.
MODEL 3308C3
$152.90 Each
Prices are subject to change
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Returnable:No
a (in)
2.2047
B (in)
1.4370
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Steel
Cage material
Steel
Cage Type
Pressed
Cage type
Pressed
Configuration
Two
Contact angle
32 º
D (in)
3.5433
d (in)
1.5748
Da max
3.2087 in
da min
1.9094 in
Dynamic Load Rating
13500 lbf
Dynamic load rating
13500 lbf
Enclosure
Open
I.D.
40 mm
Material
High carbon chrome steel
O.D.
90 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
Class 0
r (in)
0.0591
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0591 in
Static Load Rating
14200 lbf
Static load rating
14200 lbf
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Outside Ring Type | Straight |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Precision | Class 0 |
Configuration | Two |
Radial Internal Clearance | C3 |
Static Load Rating | 14200 lbf63000 N63.00 kN |
Dynamic Load Rating | 13500 lbf60000 N60.00 kN |
Enclosure | Open |
Weight | 2.348 lb1.065 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
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