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The NTN 71905CVUJ74 is a single-row angular contact ball bearing with a 25 mm straight bore. It features an open enclosure and a phenolic cage for high-speed and high-precision applications. Made from high carbon chrome steel, this bearing is designed for machine tool spindles and precision rotating assemblies.
MODEL 71905CVUJ74
$297.29 Each
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a (Load Center)
0.3543 in
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
One
Contact angle
15 º
d (in)
0.9843
D (in)
1.6535
D1
1.4724 in
d2
1.2047 in
D4
1.5236 in
D5
0.0689 in
Double Row Width
0.7087 in
Dynamic Load Rating
1868 lbf
Dynamic load rating
1868 lbf
E (in)
1.750
Enclosure
Open
I.D.
25 mm
Limiting Speed - Grease
33000 RPM
Limiting speed - grease
33000 RPM
Limiting Speed - Oil
50000 RPM
Limiting speed - oil
50000 RPM
Material
High carbon chrome steel
O.D.
42 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
Quadruple Row Width
1.4173 in
r2 max
0.0118 in
r3 max
0.0059 in
Static Load Rating
1305 lbf
Static load rating
1305 lbf
Triple Row Width
1.0630 in
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Stratified |
Cage Material | Phenolic |
Ball Material | Steel |
Limiting Speed - Oil | 50000 RPM |
Limiting Speed - Grease | 33000 RPM |
Precision | ISO Class 4 |
Configuration | One |
Preload | Light |
Static Load Rating | 1305 lbf5800 N5.80 kN |
Dynamic Load Rating | 1868 lbf8300 N8.30 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.9843 in25.000 mm |
D | 1.6535 in42.000 mm |
B | 0.3543 in9.000 mm |
r2 max | 0.0118 in0.300 mm |
r3 max | 0.0059 in0.150 mm |
Contact Angle | 15 |
a (Load Center) | 0.3543 in9.000 mm |
d2 | 1.2047 in30.600 mm |
D1 | 1.4724 in37.400 mm |
D4 | 1.5236 in38.700 mm |
D5 | 0.0689 in1.2717 mm |
E | 1.750 in32.300 mm |
Double Row Width | 0.7087 in18.000 mm |
Triple Row Width | 1.0630 in27.000 mm |
Quadruple Row Width | 1.4173 in36.000 mm |
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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