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NTN 7200B 72 series single-row angular contact ball bearing, 10 mm straight bore, open enclosure, steel cage. High carbon chrome steel construction for combined radial and axial loads in machine tool spindles, pumps, and compressors.
MODEL 7200B
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$35.31 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
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a (Load Center)
0.4134 in
B (in)
0.3543
Ball material
Steel
Ball Material
Steel
Bore type
Round
Bore Type
Round
Cage material
Steel
Cage Material
Steel
Cage type
Pressed
Cage Type
Pressed
Configuration
One
Contact angle
40 º
D (in)
1.1811
d (in)
0.3937
Da max
1.0039 in
da min
0.5709 in
Db max
1.0827 in
db min
0.4921 in
Double Row Width
0.7087 in
Dynamic load rating
1120 lbf
Dynamic Load Rating
1120 lbf
Enclosure
Open
I.D.
10 mm
Limiting speed - grease
24000 RPM
Limiting Speed - Grease
24000 RPM
Limiting speed - oil
32000 RPM
Limiting Speed - Oil
32000 RPM
Material
High Carbon Chrome Steel
O.D.
30 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision
ISO Class 0
Quadruple Row Width
1.4173 in
r (in)
0.0236
r1
0.0118 in
r1as max
0.0118 in
ras max
0.0236 in
Static load rating
565 lbf
Static Load Rating
565 lbf
Triple Row Width
1.0630 in
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Oil | 32000 RPM |
Limiting Speed - Grease | 24000 RPM |
Precision | ISO Class 0 |
Configuration | One |
Static Load Rating | 565 lbf2520 N2.52 kN |
Dynamic Load Rating | 1120 lbf5000 N5.00 kN |
Enclosure | Open |
Weight | 0.071 lb0.032 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.3937 in10.000 mm |
D | 1.1811 in30.000 mm |
B | 0.3543 in9.000 mm |
r | 0.0236 in0.600 mm |
r1 | 0.0118 in0.300 mm |
Contact Angle | 40 |
a (Load Center) | 0.4134 in10.500 mm |
da min | 0.5709 in14.500 mm |
db min | 0.4921 in12.500 mm |
Da max | 1.0039 in25.500 mm |
Db max | 1.0827 in27.500 mm |
ras max | 0.0236 in0.600 mm |
r1as max | 0.0118 in0.300 mm |
Double Row Width | 0.7087 in18.000 mm |
Triple Row Width | 1.0630 in27.000 mm |
Quadruple Row Width | 1.4173 in36.000 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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