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NTN NA6914R is a machined ring needle roller bearing with a 70 mm bore. This open bearing features a steel cage and is constructed from high carbon chrome steel. It is designed for applications requiring high radial load capacity in a compact cross-section, such as gearboxes, pumps, and industrial machinery.
MODEL NA6914R
$339.70 Each
Prices are subject to change
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Returnable:No
Bearing Type
Needle roller bearing
Cage
Steel
Enclosure
Open
Height
3.937
I.D.
70 mm
Length
3.937
Material
High carbon chrome steel
O.D.
100 mm
Width
2.126
Technical Specifications
Type | Needle Roller Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Material | Steel |
Limiting Speed - Oil | 5000 RPM |
Limiting Speed - Grease | 3300 RPM |
Precision | ISO Class 0 |
Configuration | Two |
Enclosure | Open |
Bearing Design | w/ Inner Ring |
Oil Hole | w/ Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 60000 lbf267000 N267.00 kN |
Dynamic Load Rating | 29200 lbf130000 N130.00 kN |
Weight | 2.954 lb1.340 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.7559 in70.000 mm |
D | 3.9370 in100.000 mm |
F | 3.1496 in80.000 mm |
B | 2.1260 in54.000 mm |
r | 0.0394 in1.000 mm |
s | 0.0394 in1.000 mm |
da min | 2.9528 in75.000 mm |
Da max | 3.7402 in95.000 mm |
ras 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.
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