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NTN 21316W33C3 is a 213 series spherical roller bearing with an 80 mm straight bore. It features a brass cage, C3 clearance, and W33 annular lube groove with three lubrication holes. The open design accommodates high radial and moderate axial loads in heavy-duty industrial applications such as gearboxes, fans, and vibrating screens.
MODEL 21316W33C3
$471.05 Each
Prices are subject to change
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B (in)
1.5354
Bore type
Round
Bore Type
Round
Cage material
Steel
Cage Material
Steel
Cage type
Machined
Cage Type
Machined
d (in)
3.1496
D (in)
6.6929
d0
0.1575 in
Da max
6.2205 in
da min
3.6220 in
Dynamic load rating
58500 lbf
Dynamic Load Rating
58500 lbf
e
0.23
Enclosure
Open
I.D.
80 mm
Limiting speed - grease
2500 RPM
Limiting Speed - Grease
2500 RPM
Limiting speed - oil
3300 RPM
Limiting Speed - Oil
3300 RPM
Material
Through Hardened Steel
O.D.
170 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
r (in)
0.0827
Radial internal clearance
C3
Radial Internal Clearance
C3
ras max
0.0787 in
Ring modification
Relube
Ring Modification
Relube
Series
213
Static load rating
71000 lbf
Static Load Rating
71000 lbf
Tolerance
JIS-0 RBEC-1
Type
Spherical Roller Bearing
Y0
2.88
Y1
2.95
Y2
4.39
Technical Specifications
Type | Spherical Roller Bearing |
Bore Type | Round |
Material | Through Hardened Steel |
Cage Type | Machined |
Cage Material | Brass |
Limiting Speed - Oil | 3300 RPM |
Limiting Speed - Grease | 2500 RPM |
e | 0.23 |
Y1 | 2.95 |
Y2 | 4.39 |
Y0 | 2.88 |
Series | 213 |
Radial Internal Clearance | C3 |
Ring Modification | Relube |
Tolerance | JIS-0 RBEC-1 |
Static Load Rating | 71000 lbf315000 N315.00 kN |
Dynamic Load Rating | 58500 lbf260000 N260.00 kN |
Enclosure | Open |
Weight | 9.789 lb4.440 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 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.
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