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NTN CH7005HVDUJ74 is a duplex hybrid angular contact ball bearing with a 25 mm bore. It features a phenolic cage and is open (unsealed). The bearing is universal flush ground for high-precision applications. Constructed from high carbon chrome steel, it is designed for machine tool spindles and other precision rotating equipment.
MODEL CH7005HVDUJ74
$675.47 Each
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2B
0.9449 in
B (in)
0.4724
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
25 º
D (in)
1.8504
d (in)
0.9843
D1
1.5787 in
d2
1.2677 in
D4
1.6654 in
D5
1.3465 in
E (in)
0.0807
Enclosure
Open
I.D.
25 mm
Material
High carbon chrome steel
O.D.
47 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
r2 max
0.0236 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 | 0.9843 in25.000 mm |
D | 1.8504 in47.000 mm |
B | 0.4724 in12.000 mm |
2B | 0.9449 in24.000 mm |
r2 max | 0.0236 in0.600 mm |
r3 max | 0.0118 in0.300 mm |
Contact Angle | 25 |
d2 | 1.2677 in32.200 mm |
D1 | 1.5787 in40.100 mm |
D4 | 1.6654 in42.300 mm |
D5 | 1.3465 in34.200 mm |
E | 0.0807 in2.050 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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