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NTN 7206T2DBT/GNP4 is a precision angular contact ball bearing with a 30 mm straight bore, arranged back-to-back (DBT) for duplex mounting. Features a polyamide cage, open enclosure, and P4 precision class. Constructed from high carbon chrome steel for rigidity and accuracy in machine tool spindles and high-speed applications.
MODEL 7206T2DBT/GNP4
$870.72 Each
Prices are subject to change
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Returnable:No
B (in)
0.6299
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Nylon
Cage material
Nylon
Cage Type
Fiber Glass Reinforced
Cage type
Fiber glass reinforced
Configuration
Three
Contact angle
30 º
D (in)
2.4409
d (in)
1.1811
da min
1.3976 in
Db max
2.2638 in
Enclosure
Open
I.D.
30 mm
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
Normal
r (in)
0.0394
r1
0.0236 in
r1as max
0.0236 in
ras max
0.0394 in
Total 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 | Fiber Glass Reinforced |
Cage Material | Nylon |
Ball Material | Steel |
Precision | ISO Class 4 |
Configuration | Three |
Preload | Normal |
Enclosure | Open |
Weight | 1.257 lb0.570 kg |
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 |
Total Width | 1.8898 in48.000 mm |
r | 0.0394 in1.000 mm |
r1 | 0.0236 in0.600 mm |
Contact Angle | 30 |
da min | 1.3976 in35.500 mm |
Db max | 2.2638 in57.500 mm |
ras max | 0.0394 in1.000 mm |
r1as max | 0.0236 in0.600 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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