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NTN 33209 is a single row metric tapered roller bearing with a 45 mm straight bore. This open bearing features a case carburized steel construction for durability under heavy radial and axial loads. Designed for gearboxes, wheel hubs, and industrial machinery requiring precise axial location.
MODEL 33209
$47.95 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
-0.3937 in
B (in)
1.2598
Bore Type
Round
Bore type
Round
C (in)
0.9843
Configuration
One
D (in)
3.3465
d (in)
1.7717
Da
3.01 in
da
2.11 in
Da min
2.83 in
Db
3.19 in
db
2.05 in
Dynamic Load Rating
24100 lbf
Dynamic load rating
24100 lbf
e (Axial Load Factor)
0.39
Enclosure
Open
I.D.
1.7717 in
Limiting Speed - Grease
4400 RPM
Limiting speed - grease
4400 RPM
Limiting Speed - Oil
5900 RPM
Limiting speed - oil
5900 RPM
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
3.3465 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision Rating
Class 0
Precision rating
Class 0
R (in)
0.06
r (in)
0.0600
Static Load Rating
31500 lbf
Static load rating
31500 lbf
Style
Cone & cup
T (in)
1.2598
Type
Tapered Roller Bearing
Y0 (Axial Load Factor)
0.86
Y2 (Axial Load Factor)
1.56
Technical Specifications
Type |
Tapered Roller Bearing |
Bore Type |
Round |
Material |
Case Carburized Steel |
Limiting Speed - Oil |
5900 RPM |
Limiting Speed - Grease |
4400 RPM |
Style |
Cone & Cup |
Precision Rating |
Class 0 |
Configuration |
One |
Lubrication |
w/o Oil Hole |
e (Axial Load Factor) |
0.39 |
Y2 (Axial Load Factor) |
1.56 |
Y0 (Axial Load Factor) |
0.86 |
Static Load Rating |
31500 lbf141000 N141.00 kN |
Dynamic Load Rating |
24100 lbf107000 N107.00 kN |
Enclosure |
Open |
Weight |
1.726 lb0.783 kg |
Operating Temperature Range |
-40 to 250 F-40 to 120 C |
Dimensional Specifications
|
|
|
d |
1.7717 in45.000 mm |
D |
3.3465 in85.000 mm |
C |
0.9843 in25.000 mm |
B |
1.2598 in32.000 mm |
a (Effective Load Center) |
-0.3937 in-10.000 mm |
T |
1.2598 in32.000 mm |
r |
0.0600 in1.500 mm |
R |
0.06 in1.5 mm |
da |
2.11 in53.5 mm |
db |
2.05 in52.0 mm |
Da |
3.01 in76.5 mm |
Da min |
2.83 in72.0 mm |
Db |
3.19 in81.0 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.
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