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The NTN 7009HVUJ74 is a 70 series single-row angular contact ball bearing with a 45 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 7009HVUJ74
$392.72 Each
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a (Load Center)
0.8661 in
B (in)
0.6299
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
25 º
D (in)
2.9528
d (in)
1.7717
D1
2.5591 in
d2
2.1535 in
D4
2.7008 in
D5
0.1122 in
Double Row Width
1.2598 in
Dynamic Load Rating
5850 lbf
Dynamic load rating
5850 lbf
E (in)
2.850
Enclosure
Open
I.D.
45 mm
Limiting Speed - Grease
18000 RPM
Limiting speed - grease
18000 RPM
Limiting Speed - Oil
24000 RPM
Limiting speed - oil
24000 RPM
Material
High carbon chrome steel
O.D.
75 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
Quadruple Row Width
2.5197 in
r2 max
0.0394 in
r3 max
0.0236 in
Static Load Rating
4073 lbf
Static load rating
4073 lbf
Triple Row Width
1.8898 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 | 24000 RPM |
Limiting Speed - Grease | 18000 RPM |
Precision | ISO Class 4 |
Configuration | One |
Preload | Light |
Static Load Rating | 4073 lbf18100 N18.10 kN |
Dynamic Load Rating | 5850 lbf26000 N26.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.7717 in45.000 mm |
D | 2.9528 in75.000 mm |
B | 0.6299 in16.000 mm |
r2 max | 0.0394 in1.000 mm |
r3 max | 0.0236 in0.600 mm |
Contact Angle | 25 |
a (Load Center) | 0.8661 in22.000 mm |
d2 | 2.1535 in54.700 mm |
D1 | 2.5591 in65.000 mm |
D4 | 2.7008 in68.600 mm |
D5 | 0.1122 in2.2638 mm |
E | 2.850 in57.500 mm |
Double Row Width | 1.2598 in32.000 mm |
Triple Row Width | 1.8898 in48.000 mm |
Quadruple Row Width | 2.5197 in64.000 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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