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NTN 7213CT1GD2/GNP4 is a duplex angular contact ball bearing with a 65 mm straight bore. This open bearing features a phenolic cage and is universal flush ground for mounting in pairs. Constructed from high carbon chrome steel, it is designed for high-precision applications such as machine tool spindles and precision spindles.
MODEL 7213CT1GD2/GNP4
$1,245.17 Each
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2B
1.8110 in
B (in)
0.9055
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)
4.7244
d (in)
2.5591
D1
4.0354 in
d1
3.2480 in
D2
4.3189 in
Da max
4.3898 in
da min
2.8937 in
Db max
4.5079 in
db min
2.7756 in
Dynamic Load Rating
25400 lbf
Dynamic load rating
25400 lbf
Enclosure
Open
I.D.
65 mm
Limiting Speed - Grease
7100 RPM
Limiting speed - grease
7100 RPM
Limiting Speed - Oil
9500 RPM
Limiting speed - oil
9500 RPM
Material
High carbon chrome steel
O.D.
120 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Normal
r (in)
0.0591
r1
0.0394 in
r1as max
0.0394 in
ras max
0.0591 in
Static Load Rating
24700 lbf
Static load rating
24700 lbf
Type
Angular Contact Ball Bearing
Width
1.811
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 | 9500 RPM |
Limiting Speed - Grease | 7100 RPM |
Precision | ISO Class 4 |
Configuration | Two |
Preload | Normal |
Static Load Rating | 24700 lbf110000 N110.00 kN |
Dynamic Load Rating | 25400 lbf113000 N113.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.5591 in65.000 mm |
|---|---|
D | 4.7244 in120.000 mm |
B | 0.9055 in23.000 mm |
2B | 1.8110 in46.000 mm |
d1 | 3.2480 in82.500 mm |
D1 | 4.0354 in102.500 mm |
D2 | 4.3189 in109.700 mm |
r | 0.0591 in1.500 mm |
r1 | 0.0394 in1.000 mm |
Contact Angle | 15 |
da min | 2.8937 in73.500 mm |
db min | 2.7756 in70.500 mm |
Da max | 4.3898 in111.500 mm |
Db max | 4.5079 in114.500 mm |
ras max | 0.0591 in1.500 mm |
r1as max | 0.0394 in1.000 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.
| Brand | Dixon Sanitary Fittings |
| Model | L15AJP-R300 |
