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NTN A-UCX18-307D1 is a bearing insert with a 3-7/16 inch bore and set screw locking mechanism. Designed for standard-duty applications, this insert accommodates shaft misalignment and is suitable for use in pillow block and flange housings.
MODEL A-UCX18-307D1
$589.47 Each
Prices are subject to change
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Returnable:No
I.D.
3.4375 in
Locking Device
Set Screw
O.D.
6.6929 in
Width
4.0945 in
Technical Specifications
Type | Insert Bearing |
Bore Type | Round |
Bearing Type | Ball Bearing |
Material | Through Hardened Steel |
Ball Material | Steel |
Limiting Speed - Grease | 1300 RPM |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Precision Rating | ISO Class 0 |
Locking Device | Set Screw |
Lubrication | Relubricatable |
Static Load Rating | 18400 lbf82000 N82.00 kN |
Dynamic Load Rating | 24500 lbf109000 N109.00 kN |
Enclosure | Double Sealed |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 3.4375 in87.313 mm |
D | 6.6929 in170.000 mm |
C | 1.5354 in39.000 mm |
B | 4.0945 in104.000 mm |
r | 0.0984 in2.500 mm |
ds | 9/16-18 UNF |
G | 0.5512 in14.000 mm |
d4 | 4.6535 in118.200 mm |
S1 | 2.4055 in61.100 mm |
S | 1.6890 in42.900 mm |
F | 0.4134 in10.500 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.
| Brand | Bridgeport |
| Model | 243-SR |
