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NTN MLCH7008CVDUJ74S is a high-speed duplex hybrid angular contact ball bearing with a 40 mm bore. It features an open enclosure, phenolic cage, and high carbon chrome steel construction. This universal flush ground bearing is designed for precision spindle applications requiring high rigidity and speed.
MODEL MLCH7008CVDUJ74S
$1,631.59 Each
Prices are subject to change
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2B
1.1811 in
B (in)
0.5906
Ball Material
Ceramic
Ball material
Ceramic
Bore Type
Round
Bore type
Round
Cage Material
Phenolic
Cage material
Phenolic
Cage Type
Stratified
Cage type
Stratified
Configuration
Two
Contact angle
17 º
D (in)
2.6772
d (in)
1.5748
D1
2.2638 in
d2
1.9370 in
d3
1.8701 in
D4
2.3465 in
D5
1.9882 in
E (in)
0.1181
Enclosure
Open
I.D.
40 mm
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
r2 max
0.0394 in
r3 max
0.0118 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 | Ceramic |
Precision | ISO Class 4 |
Configuration | Two |
Preload | Light |
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 |
2B | 1.1811 in30.000 mm |
r2 max | 0.0394 in1.000 mm |
r3 max | 0.0118 in0.300 mm |
Contact Angle | 17 |
d2 | 1.9370 in49.200 mm |
d3 | 1.8701 in47.500 mm |
D1 | 2.2638 in57.500 mm |
D4 | 2.3465 in59.600 mm |
D5 | 1.9882 in50.500 mm |
E | 0.1181 in3.000 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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