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NTN 23124EMW33 is a 231 series spherical roller bearing with a 120 mm straight bore. It features a machined brass cage and an annular lube groove (W33) for effective lubrication. Designed for heavy-duty industrial applications such as gearboxes, conveyors, and vibrating screens.
MODEL 23124EMW33
$946.43 Each
Prices are subject to change
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Returnable:No
B (in)
2.4409
Bore type
Round
Bore Type
Round
Cage material
Brass
Cage Material
Brass
Cage type
Machined
Cage Type
Machined
D (in)
7.8740
d (in)
4.7244
d0
0.1772 in
D1
6.8110 in
d1
5.4331 in
Da max
7.4409 in
da min
5.1575 in
Dynamic load rating
149000 lbf
Dynamic Load Rating
149000 lbf
e
0.28
Enclosure
Open
I.D.
120 mm
Limiting speed - grease
2000 RPM
Limiting Speed - Grease
2000 RPM
Limiting speed - oil
2500 RPM
Limiting Speed - Oil
2500 RPM
Material
Through Hardened Steel
O.D.
200 mm
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
ras max
0.0787 in
Ring modification
Relube
Ring Modification
Relube
Series
231
Static load rating
184000 lbf
Static Load Rating
184000 lbf
Tolerance
JIS-0 RBEC-1
Type
Spherical Roller Bearing
W0
0.3937 in
Y0
2.37
Y1
2.43
Y2
3.61
Technical Specifications
Type | Spherical Roller Bearing |
Bore Type | Round |
Material | Through Hardened Steel |
Cage Type | Machined |
Cage Material | Brass |
Limiting Speed - Oil | 2500 RPM |
Limiting Speed - Grease | 2000 RPM |
e | 0.28 |
Y1 | 2.43 |
Y2 | 3.61 |
Y0 | 2.37 |
Series | 231 |
Radial Internal Clearance | CN |
Ring Modification | Relube |
Tolerance | JIS-0 RBEC-1 |
Static Load Rating | 184000 lbf820000 N820.00 kN |
Dynamic Load Rating | 149000 lbf663000 N663.00 kN |
Enclosure | Open |
Weight | 17.130 lb7.770 kg |
Operating Temperature Range | -40 to 400 F-40 to 200 C |
Dimensional Specifications
| |
d | 4.7244 in120.000 mm |
D | 7.8740 in200.000 mm |
B | 2.4409 in62.000 mm |
d1 | 5.4331 in138.000 mm |
D1 | 6.8110 in173.000 mm |
r | 0.0787 in2.000 mm |
W0 | 0.3937 in10.000 mm |
d0 | 0.1772 in4.500 mm |
da min | 5.1575 in131.000 mm |
Da max | 7.4409 in189.000 mm |
ras max | 0.0787 in2.000 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 | Marathon Electric |
| Model | M889B |
