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NTN 23140EMW33 is a 231 series spherical roller bearing with a 200 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, vibrating screens, and paper mills.
MODEL 23140EMW33
$3,804.11 Each
Prices are subject to change
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Returnable:No
B (in)
4.4094
Bore type
Round
Bore Type
Round
Cage material
Brass
Cage Material
Brass
Cage type
Machined
Cage Type
Machined
d (in)
7.8740
D (in)
13.3858
d0
0.3150 in
d1
9.0945 in
D1
11.8504 in
Da max
12.8346 in
da min
8.4252 in
Dynamic load rating
425000 lbf
Dynamic Load Rating
425000 lbf
e
0.30
Enclosure
Open
I.D.
200 mm
Limiting speed - grease
1100 RPM
Limiting Speed - Grease
1100 RPM
Limiting speed - oil
1400 RPM
Limiting Speed - Oil
1400 RPM
Material
Through Hardened Steel
O.D.
340 mm
Operating temperature range
-40 to 400 ºF
Operating Temperature Range
-40 to 400 °F
r (in)
0.1181
Radial internal clearance
CN
Radial Internal Clearance
CN
ras max
0.1181 in
Ring modification
Relube
Ring Modification
Relube
Series
231
Static load rating
565000 lbf
Static Load Rating
565000 lbf
Tolerance
JIS-0 RBEC-1
Type
Spherical Roller Bearing
W0
0.7087 in
Y0
2.20
Y1
2.25
Y2
3.34
Technical Specifications
Type | Spherical Roller Bearing |
Bore Type | Round |
Material | Through Hardened Steel |
Cage Type | Machined |
Cage Material | Brass |
Limiting Speed - Oil | 1400 RPM |
Limiting Speed - Grease | 1100 RPM |
e | 0.30 |
Y1 | 2.25 |
Y2 | 3.34 |
Y0 | 2.20 |
Series | 231 |
Radial Internal Clearance | CN |
Ring Modification | Relube |
Tolerance | JIS-0 RBEC-1 |
Static Load Rating | 565000 lbf2510000 N2510.00 kN |
Dynamic Load Rating | 425000 lbf1890000 N1890.00 kN |
Enclosure | Open |
Weight | 91.933 lb41.700 kg |
Operating Temperature Range | -40 to 400 F-40 to 200 C |
Dimensional Specifications
| |
d | 7.8740 in200.000 mm |
D | 13.3858 in340.000 mm |
B | 4.4094 in112.000 mm |
d1 | 9.0945 in231.000 mm |
D1 | 11.8504 in301.000 mm |
r | 0.1181 in3.000 mm |
W0 | 0.7087 in18.000 mm |
d0 | 0.3150 in8.000 mm |
da min | 8.4252 in214.000 mm |
Da max | 12.8346 in326.000 mm |
ras max | 0.1181 in3.000 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.
