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NTN 71903HVUJ74 is a 71 series single-row angular contact ball bearing with a 17 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 capacity.
MODEL 71903HVUJ74
$320.88 Each
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Returnable:No
a (Load Center)
0.3543 in
B (in)
0.2756
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)
1.1811
d (in)
0.6693
D1
1.0472 in
d2
0.8268 in
D4
1.0906 in
D5
0.0571 in
Double Row Width
0.5512 in
Dynamic Load Rating
1148 lbf
Dynamic load rating
1148 lbf
E (in)
1.450
Enclosure
Open
I.D.
17 mm
Limiting Speed - Grease
44000 RPM
Limiting speed - grease
44000 RPM
Limiting Speed - Oil
68000 RPM
Limiting speed - oil
68000 RPM
Material
High carbon chrome steel
O.D.
30 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
Quadruple Row Width
1.1024 in
r2 max
0.0118 in
r3 max
0.0059 in
Static Load Rating
675 lbf
Static load rating
675 lbf
Triple Row Width
0.8268 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 | 68000 RPM |
Limiting Speed - Grease | 44000 RPM |
Precision | ISO Class 4 |
Configuration | One |
Preload | Light |
Static Load Rating | 675 lbf3000 N3.00 kN |
Dynamic Load Rating | 1148 lbf5100 N5.10 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.6693 in17.000 mm |
D | 1.1811 in30.000 mm |
B | 0.2756 in7.000 mm |
r2 max | 0.0118 in0.300 mm |
r3 max | 0.0059 in0.150 mm |
Contact Angle | 25 |
a (Load Center) | 0.3543 in9.000 mm |
d2 | 0.8268 in21.000 mm |
D1 | 1.0472 in26.600 mm |
D4 | 1.0906 in27.700 mm |
D5 | 0.0571 in0.9055 mm |
E | 1.450 in23.000 mm |
Double Row Width | 0.5512 in14.000 mm |
Triple Row Width | 0.8268 in21.000 mm |
Quadruple Row Width | 1.1024 in28.000 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.
| Brand | Kipp |
| Model | K0472.524040 |
