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NTN 7006CVDUJ74 is a 70 series duplex angular contact ball bearing with a 30 mm straight bore. It features a phenolic cage and is open (no seals). The universal flush ground design allows mounting in tandem, back-to-back, or face-to-face arrangements for high-precision applications such as machine tool spindles.
MODEL 7006CVDUJ74
$558.87 Each
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2B
1.0236 in
B (in)
0.5118
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
15 º
D (in)
2.1654
d (in)
1.1811
D1
1.8504 in
d2
1.5000 in
D4
1.9488 in
D5
1.5906 in
E (in)
0.0925
Enclosure
Open
I.D.
30 mm
Material
High carbon chrome steel
O.D.
55 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
0.0236 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 | Light |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 1.1811 in30.000 mm |
|---|---|
| D | 2.1654 in55.000 mm |
| B | 0.5118 in13.000 mm |
| 2B | 1.0236 in26.000 mm |
| r2 max | 0.0394 in1.000 mm |
| r3 max | 0.0236 in0.600 mm |
| Contact Angle | 15 |
| d2 | 1.5000 in38.100 mm |
| D1 | 1.8504 in47.000 mm |
| D4 | 1.9488 in49.500 mm |
| D5 | 1.5906 in40.400 mm |
| E | 0.0925 in2.350 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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