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NTN N211 is an N-type cylindrical roller bearing with a 55 mm straight bore. The N configuration features no flanges on the inner ring, making the bearing separable and able to accommodate axial expansion. It has a pressed steel cage and is open (unsealed). Constructed from hardened alloy steel, this bearing is suitable for applications requiring axial shaft movement within the housing, such as in gearboxes and electric motors.
MODEL N211
$177.19 Each
Prices are subject to change
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Returnable:No
B (in)
0.8268
Bore Type
Round
Bore type
Round
Cage Material
Pressed Steel
Cage material
Pressed steel
Configuration
One
d (in)
2.1654
D (in)
3.9370
Da max
3.622 in
da min
2.4213 in
Db max
3.6811 in
Db min
3.6811 in
db min
2.4803 in
Dynamic Load Rating
13000 lbf
Dynamic load rating
13000 lbf
Enclosure
Open
Ew
3.4843 in
I.D.
55 mm
J (in)
2.7874
Limiting Speed - Grease
6900 RPM
Limiting speed - grease
6900 RPM
Limiting Speed - Oil
8200 RPM
Limiting speed - oil
8200 RPM
Material
Hardened alloy steel
O.D.
100 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)
0.0591
r1as max
0.0591 in
Radial Internal Clearance
CN
Radial internal clearance
CN
Static Load Rating
14100 lbf
Static load rating
14100 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 | 8200 RPM |
Limiting Speed - Grease | 6900 RPM |
Precision | ISO Class 0 |
Configuration | One |
Oil Hole | w/o Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 14100 lbf62500 N62.50 kN |
Dynamic Load Rating | 13000 lbf58000 N58.00 kN |
Enclosure | Open |
Weight | 1.387 lb0.629 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.1654 in55.000 mm |
D | 3.9370 in100.000 mm |
B | 0.8268 in21.000 mm |
Ew | 3.4843 in88.500 mm |
J | 2.7874 in70.800 mm |
r | 0.0591 in1.500 mm |
da min | 2.4213 in61.500 mm |
db min | 2.4803 in63.000 mm |
Da max | 3.6220 in92.000 mm |
Db max | 3.6811 in93.500 mm |
Db min | 3.6811 in93.500 mm |
r1as max | 0.0591 in1.500 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 | Precision Twist Drill |
| Model | QC91PM5.5 |
