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NTN UC313-208D1 is a standard-duty insert bearing with a 2-1/2 in (63.5 mm) bore, double sealed for contamination resistance. The set screw locking mechanism secures the bearing to the shaft. Constructed with through hardened steel, this insert is designed for use in mounted bearing housings such as pillow blocks and flanges for industrial conveyor and machinery applications.
MODEL UC313-208D1
$326.41 Each
Prices are subject to change
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Returnable:No
Bearing Type
Insert bearing
Enclosure
Double sealed
Height
5.512
I.D.
2.5 in
Length
5.512
Locking Device
Set Screw
Material
Through hardened steel
O.D.
5.5118 in
Width
2.9528
Technical Specifications
Type | Insert Bearing |
Bore Type | Round |
Bearing Type | Ball Bearing |
Material | Through Hardened Steel |
Ball Material | Steel |
Limiting Speed - Grease | 2200 RPM |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Precision Rating | ISO Class 0 |
Performance | Heavy Duty |
Locking Device | Set Screw |
Lubrication | Relubricatable |
Basic Outer Ring | 313 |
Static Load Rating | 13500 lbf60000 N60.00 kN |
Dynamic Load Rating | 20800 lbf92500 N92.50 kN |
Enclosure | Double Sealed |
Weight | 7.385 lb3.350 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.5 in63.500 mm |
D | 5.5118 in140.000 mm |
C | 1.5354 in39.000 mm |
B | 2.9528 in75.000 mm |
r | 0.0984 in2.500 mm |
ds | 1/2-20 UNF |
G | 0.4724 in12.000 mm |
d4 | 3.4724 in88.200 mm |
S1 | 1.7717 in45.000 mm |
S | 1.1811 in30.000 mm |
F | 0.3976 in10.100 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.
