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NTN 71904CVQ16J74 is a single-row angular contact ball bearing with a 20 mm straight bore. It features an open design with a phenolic cage and is constructed from high carbon chrome steel. This high-precision bearing is suitable for machine tool spindles and other applications requiring accurate axial and radial load support.
MODEL 71904CVQ16J74
$861.34 Each
Prices are subject to change
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Returnable:No
B (in)
0.3543
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Phenolic
Cage material
Phenolic
Cage Type
Stratified
Cage type
Stratified
Configuration
Three
Contact angle
15 º
D (in)
1.4567
d (in)
0.7874
d2
0.9882 in
D4
1.3071 in
D5
1.0551 in
E (in)
0.0701
Enclosure
Open
I.D.
20 mm
Material
High carbon chrome steel
O.D.
37 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
r2
0.0118 in
r3
0.0059 in
Total width
1.0630 in
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Material | High Carbon Chrome Steel |
Bore Type | Round |
Preload | Light |
Enclosure | Open |
Precision | ISO Class 4 |
Configuration | Three |
Cage Material | Phenolic |
Cage Type | Stratified |
Ball Material | Steel |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.7874 in20.000 mm |
D | 1.4567 in37.000 mm |
B | 0.3543 in9.000 mm |
Total Width | 1.0630 in27.000 mm |
r2 | 0.0118 in0.300 mm |
r3 | 0.0059 in0.150 mm |
d2 | 0.9882 in25.100 mm |
D4 | 1.3071 in33.200 mm |
D5 | 1.0551 in26.800 mm |
E | 0.0701 in1.780 mm |
Contact Angle | 15 |
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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