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NTN N317 N-type single-row cylindrical roller bearing with a straight 85 mm bore. The N configuration has no flanges on the inner ring, making the bearing separable and capable of accommodating axial expansion of the shaft. Suitable for gearboxes, electric motors, and pumps.
MODEL N317
$555.51 Each
Prices are subject to change
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Returnable:No
B (in)
1.6142
Bore Type
Round
Bore type
Round
Cage Material
Pressed Steel
Cage material
Pressed steel
Configuration
One
d (in)
3.3465
D (in)
7.0866
Da max
6.5748 in
da min
3.8583 in
Db max
6.5748 in
db min
3.8583 in
Db min
6.5748 in
Dynamic Load Rating
47500 lbf
Dynamic load rating
47500 lbf
Enclosure
Open
Ew
6.1417 in
I.D.
85 mm
J (in)
4.6260
Limiting Speed - Grease
3900 RPM
Limiting speed - grease
3900 RPM
Limiting Speed - Oil
4600 RPM
Limiting speed - oil
4600 RPM
Material
Hardened alloy steel
O.D.
180 mm
Oil Hole
w/o Oil Hole
Oil hole
w/o Oil Hole
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0984
r1as max
0.0984 in
Radial Internal Clearance
CN
Radial internal clearance
CN
Static Load Rating
51500 lbf
Static load rating
51500 lbf
Type
Cylindrical Roller Bearing
Technical Specifications
Type | Cylindrical Roller Bearing |
Bore Type | Round |
Material | Hardened Alloy Steel |
Cage Material | Pressed Steel |
Limiting Speed - Oil | 4600 RPM |
Limiting Speed - Grease | 3900 RPM |
Precision | ISO Class 0 |
Configuration | One |
Oil Hole | w/o Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 51500 lbf228000 N228.00 kN |
Dynamic Load Rating | 47500 lbf212000 N212.00 kN |
Enclosure | Open |
Weight | 9.877 lb4.480 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 3.3465 in85.000 mm |
D | 7.0866 in180.000 mm |
B | 1.6142 in41.000 mm |
Ew | 6.1417 in156.000 mm |
J | 4.6260 in117.500 mm |
r | 0.0984 in2.500 mm |
da min | 3.8583 in98.000 mm |
db min | 3.8583 in98.000 mm |
Da max | 6.5748 in167.000 mm |
Db max | 6.5748 in167.000 mm |
Db min | 6.5748 in167.000 mm |
r1as max | 0.0984 in2.500 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.
