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NTN 71915HVDUJ84 is a high-precision angular contact ball bearing with a 75 mm straight bore. Open enclosure with a phenolic cage. Universal flush ground design allows mounting in any arrangement. Made from high carbon chrome steel for machine tool spindles and high-speed applications.
MODEL 71915HVDUJ84
$1,627.93 Each
Prices are subject to change
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2B
1.2598 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
Two
Contact angle
25 º
D (in)
4.1339
d (in)
2.9528
D1
3.7795 in
d2
3.3071 in
D4
3.9370 in
D5
3.3976 in
E (in)
0.0591
Enclosure
Open
I.D.
75 mm
Material
High carbon chrome steel
O.D.
105 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Medium
r2 max
0.0394 in
r3 max
0.0236 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 |
| Precision | ISO Class 4 |
| Configuration | Two |
| Preload | Medium |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 2.9528 in75.000 mm |
|---|---|
| D | 4.1339 in105.000 mm |
| B | 0.6299 in16.000 mm |
| 2B | 1.2598 in32.000 mm |
| r2 max | 0.0394 in1.000 mm |
| r3 max | 0.0236 in0.600 mm |
| Contact Angle | 25 |
| d2 | 3.3071 in84.000 mm |
| D1 | 3.7795 in96.000 mm |
| D4 | 3.9370 in100.000 mm |
| D5 | 3.3976 in86.300 mm |
| E | 0.0591 in1.500 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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