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NTN AR204-012 is a bearing insert with a narrow inner ring and spherical outer diameter. It features a 3/4" bore, set screw locking, and double-sealed enclosure. The through hardened steel construction provides durability for general industrial applications such as conveyors and material handling equipment.
MODEL AR204-012
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Brand Minimum Order Quantity: 3
Typically Ships in: 1 day
Returnable:No
Axial Static Load Rating
1495 lbf
Axial static load rating
1495 lbf
B (in)
1.0040
Ball Material
Through Hardened Steel
Ball material
Through hardened steel
Basic Outer Ring
204
Bearing Type
Ball Bearing
Bore Type
Cylindrical
Bore type
Cylindrical
C (in)
1.0040
Clearance
CN
D (in)
1.8500
d (in)
0.7500
d4
1.1654 in
DS
1/4-28 UNF
Dynamic Load Rating
2878 lbf
Dynamic load rating
2878 lbf
Enclosure
Full Contact Seal - Both Sides
G (in)
0.1969
Height
1.85
Housing Width
0 in
Housing width
0 in
Length
1.85
Limiting Speed - Grease
6650 RPM
Limiting speed - grease
6650 RPM
Locking Device
Set Screw
Locking device
Set screw
Lubrication
Non-relubricatable
Material
Through hardened steel
Number of Holes
0
Number of holes
0
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Spherical OD
Performance
Standard Duty
Precision Rating
ISO Class 0
Precision rating
ISO class 0
r (in)
0.0394
Radial Dynamic Load Rating
2878 lbf
S
0.2953 in
S1
0.7087 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
1495 lbf
Static load rating
1495 lbf
Total Length
0.0000 in
Total length
0.0000 in
Type
Insert Bearing
Width
1.0039
Technical Specifications
Type | Insert Bearing |
|---|---|
Bore Type | Round |
Bearing Type | Ball Bearing |
Material | Through Hardened Steel |
Ball Material | Steel |
Limiting Speed - Grease | 6700 RPM |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Precision Rating | ISO Class 0 |
Performance | Standard Duty |
Locking Device | Set Screw |
Lubrication | Non-Relubricatable |
Basic Outer Ring | 204 |
Static Load Rating | 1500 lbf6650 N6.65 kN |
Dynamic Load Rating | 2880 lbf12800 N12.80 kN |
Enclosure | Double Sealed |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.75 in19.050 mm |
|---|---|
D | 1.8504 in47.000 mm |
C | 0.5906 in15.000 mm |
B | 1.0039 in25.500 mm |
r | 0.0394 in1.000 mm |
ds | 1/4-28 UNF |
G | 0.1969 in5.000 mm |
d4 | 1.1654 in29.600 mm |
S1 | 0.7087 in18.000 mm |
S | 0.2953 in7.500 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.
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