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NTN 7206CG1UJ74 is a single-row angular contact ball bearing with a 30 mm straight bore. It features an open design with a phenolic cage and high carbon chrome steel construction. This high-precision bearing is suitable for machine tool spindles and other applications requiring accurate axial and radial load support.
MODEL 7206CG1UJ74
$288.53 Each
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a (Load Center)
0.5512 in
B (in)
0.6299
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
15 º
D (in)
2.4409
d (in)
1.1811
D1
2.0512 in
d2
1.5906 in
D4
2.1811 in
D5
0.1240 in
Double Row Width
1.2598 in
Dynamic Load Rating
5490 lbf
Dynamic load rating
5490 lbf
E (in)
3.150
Enclosure
Open
I.D.
30 mm
Limiting Speed - Grease
23000 RPM
Limiting speed - grease
23000 RPM
Limiting Speed - Oil
35000 RPM
Limiting speed - oil
35000 RPM
Material
High carbon chrome steel
O.D.
62 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Light
Quadruple Row Width
2.5197 in
r2 max
0.0394 in
r3 max
0.0118 in
Static Load Rating
3578 lbf
Static load rating
3578 lbf
Triple Row Width
1.8898 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 | 35000 RPM |
Limiting Speed - Grease | 23000 RPM |
Precision | ISO Class 4 |
Configuration | One |
Preload | Light |
Static Load Rating | 3578 lbf15900 N15.90 kN |
Dynamic Load Rating | 5490 lbf24400 N24.40 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.1811 in30.000 mm |
D | 2.4409 in62.000 mm |
B | 0.6299 in16.000 mm |
r2 max | 0.0394 in1.000 mm |
r3 max | 0.0118 in0.300 mm |
Contact Angle | 15 |
a (Load Center) | 0.5512 in14.000 mm |
d2 | 1.5906 in40.400 mm |
D1 | 2.0512 in52.100 mm |
D4 | 2.1811 in55.400 mm |
D5 | 0.1240 in1.7126 mm |
E | 3.150 in43.500 mm |
Double Row Width | 1.2598 in32.000 mm |
Triple Row Width | 1.8898 in48.000 mm |
Quadruple Row Width | 2.5197 in64.000 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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