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NTN MLE71903CVUJ74S is a single-row angular contact ball bearing with a 17 mm straight bore and a 25° contact angle. It features a sealed design and standard precision. This bearing is suitable for high-speed and precision applications such as machine tool spindles.
MODEL MLE71903CVUJ74S
$332.47 Each
Prices are subject to change
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a (Load Center)
0.2756 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
17 º
D (in)
1.1811
d (in)
0.6693
D1
1.0079 in
d2
0.8110 in
d3
0.8268 in
D4
1.0236 in
Double Row Width
0.5512 in
Dynamic load rating
488 lbf
Dynamic Load Rating
488 lbf
Enclosure
Double Sealed
I.D.
17 mm
Material
High Carbon Chrome Steel
O.D.
30 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision
ISO Class 4
Quadruple Row Width
1.1024 in
r2 max
0.0118 in
r3 max
0.0059 in
Seal material
Nitrile rubber
Seal Material
Nitrile Rubber
Seal type
Non-Contact
Seal Type
Non-Contact
Static load rating
689 lbf
Static Load Rating
689 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 |
Seal Type | Non-Contact |
Seal Material | Nitrile Rubber |
Precision | ISO Class 4 |
Configuration | One |
Static Load Rating | 689 lbf3050 N3.05 kN |
Dynamic Load Rating | 488 lbf2170 N2.17 kN |
Enclosure | Double Sealed |
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 | 17 |
a (Load Center) | 0.2756 in7.000 mm |
d2 | 0.8110 in20.600 mm |
d3 | 0.8268 in21.000 mm |
D1 | 1.0079 in25.600 mm |
D4 | 1.0236 in26.000 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.
