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NTN NU328 single-row cylindrical roller bearing with 140 mm straight bore. NU design has no flanges on outer ring, making it separable and able to accommodate axial expansion. For gearboxes, electric motors, pumps, and industrial machinery requiring high radial load capacity.
MODEL NU328
$2,987.72 Each
Prices are subject to change
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Returnable:No
Height
11.811
I.D.
140 mm
Length
11.811
O.D.
300 mm
Width
2.4409
Technical Specifications
Type | Cylindrical Roller Bearing |
Bore Type | Round |
Material | Hardened Alloy Steel |
Cage Material | High Strength Machined Brass Rivetless w/ square holes |
Limiting Speed - Oil | 2700 RPM |
Limiting Speed - Grease | 2300 RPM |
Precision | ISO Class 0 |
Configuration | One |
Tolerance | ISO Class 0 (RBEC 1) |
Oil Hole | w/o Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 167000 lbf745000 N745.00 kN |
Dynamic Load Rating | 138000 lbf615000 N615.00 kN |
Enclosure | Open |
Weight | 46.297 lb21.000 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 5.5118 in140.000 mm |
D | 11.8110 in300.000 mm |
B | 2.4409 in62.000 mm |
Fw | 7.0866 in180.000 mm |
r | 0.1181 in3.000 mm |
da min | 6.1417 in156.000 mm |
db min | 6.1417 in156.000 mm |
Da max | 11.1811 in284.000 mm |
Db max | 11.1811 in284.000 mm |
r1as max | 0.1181 in3.000 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.
| Brand | MROSupply Fasteners |
| Model | FSTPCK-701169 |