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NTN 7008HVUJ74 is a 70 series single-row angular contact ball bearing with a 40 mm straight bore. Open design with a phenolic cage and high-carbon chrome steel construction. Designed for high-precision applications requiring axial and radial load support.
MODEL 7008HVUJ74
$336.08 Each
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a (Load Center)
0.7874 in
B (in)
0.5906
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)
2.6772
d (in)
1.5748
D1
2.3228 in
d2
1.9370 in
D4
2.4331 in
D5
0.1004 in
Double Row Width
1.1811 in
Dynamic Load Rating
4613 lbf
Dynamic load rating
4613 lbf
E (in)
2.550
Enclosure
Open
I.D.
40 mm
Limiting Speed - Grease
20000 RPM
Limiting speed - grease
20000 RPM
Limiting Speed - Oil
30000 RPM
Limiting speed - oil
30000 RPM
Material
High carbon chrome steel
O.D.
68 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
Quadruple Row Width
2.3622 in
r2 max
0.0394 in
r3 max
0.0236 in
Static Load Rating
3600 lbf
Static load rating
3600 lbf
Triple Row Width
1.7717 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 | 30000 RPM |
Limiting Speed - Grease | 20000 RPM |
Precision | ISO Class 4 |
Configuration | One |
Preload | Light |
Static Load Rating | 3600 lbf16000 N16.00 kN |
Dynamic Load Rating | 4613 lbf20500 N20.50 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.5748 in40.000 mm |
D | 2.6772 in68.000 mm |
B | 0.5906 in15.000 mm |
r2 max | 0.0394 in1.000 mm |
r3 max | 0.0236 in0.600 mm |
Contact Angle | 25 |
a (Load Center) | 0.7874 in20.000 mm |
d2 | 1.9370 in49.200 mm |
D1 | 2.3228 in59.000 mm |
D4 | 2.4331 in61.800 mm |
D5 | 0.1004 in2.0394 mm |
E | 2.550 in51.800 mm |
Double Row Width | 1.1811 in30.000 mm |
Triple Row Width | 1.7717 in45.000 mm |
Quadruple Row Width | 2.3622 in60.000 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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