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NTN 23120EMKW33 is a 231 series spherical roller bearing with a 100 mm straight bore. It features a machined brass cage and an annular lube groove with three lube holes (W33). This bearing is designed for heavy-duty industrial applications such as gearboxes, conveyors, and vibrating screens.
MODEL 23120EMKW33
$2,544.52 Each
Prices are subject to change
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Returnable:No
B (in)
2.0472
Bore type
Tapered
Bore Type
Tapered
Cage material
Steel
Cage Material
Steel
Cage type
Pressed
Cage Type
Pressed
d (in)
3.9370
D (in)
6.4961
d0
0.1575 in
Da max
6.0630 in
da min
4.3701 in
Dynamic load rating
104000 lbf
Dynamic Load Rating
104000 lbf
e
0.28
Enclosure
Open
Limiting speed - grease
2400 RPM
Limiting Speed - Grease
2400 RPM
Limiting speed - oil
3000 RPM
Limiting Speed - Oil
3000 RPM
Material
Through Hardened Steel
Operating temperature range
-40 to 400 ºF
Operating Temperature Range
-40 to 400 °F
r (in)
0.0787
Radial internal clearance
CN
Radial Internal Clearance
CN
Radial internal clearance specification
Normal
Radial Internal Clearance Specification
Normal
ras max
0.0787 in
Ring modification
Relube
Ring Modification
Relube
Series
231
Static load rating
127000 lbf
Static Load Rating
127000 lbf
Taper
1:12
Type
Spherical Roller Bearing
W0
0.3150 in
Y0
2.34
Y1
2.39
Y2
3.56
Technical Specifications
Type | Spherical Roller Bearing |
Bore Type | Tapered |
Material | Through Hardened Steel |
Cage Type | Pressed |
Cage Material | Steel |
Limiting Speed - Oil | 3000 RPM |
Limiting Speed - Grease | 2400 RPM |
e | 0.28 |
Y1 | 2.39 |
Y2 | 3.56 |
Y0 | 2.34 |
Series | 231 |
Radial Internal Clearance | CN |
Radial Internal Clearance Specification | Normal |
Ring Modification | Relube |
Static Load Rating | 127000 lbf563000 N563.00 kN |
Dynamic Load Rating | 104000 lbf464000 N464.00 kN |
Enclosure | Open |
Weight | 9.348 lb4.240 kg |
Operating Temperature Range | -40 to 400 F-40 to 200 C |
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.
