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NTN 33112 is a single row metric tapered roller bearing with a 60 mm straight bore. This open bearing features through hardened steel construction and is designed for combined radial and axial loads in gearboxes, wheel hubs, and industrial transmissions.
MODEL 33112
$113.83 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
-0.2559 in
B (in)
1.1811
Bore Type
Round
Bore type
Round
C (in)
0.9055
Configuration
One
D (in)
3.9370
d (in)
2.3622
Da
3.60 in
da
2.70 in
Da min
3.46 in
Db
3.78 in
db
2.64 in
Dynamic Load Rating
25400 lbf
Dynamic load rating
25400 lbf
e (Axial Load Factor)
0.40
Enclosure
Open
I.D.
2.3622 in
Limiting Speed - Grease
3600 RPM
Limiting speed - grease
3600 RPM
Limiting Speed - Oil
4700 RPM
Limiting speed - oil
4700 RPM
Lubrication
w/o Oil Hole
Material
Through hardened steel
O.D.
3.937 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
37000 lbf
Static load rating
37000 lbf
Style
Cone & cup
T (in)
1.1811
Type
Tapered Roller Bearing
Y0 (Axial Load Factor)
0.83
Y2 (Axial Load Factor)
1.51
Technical Specifications
Type | Tapered Roller Bearing |
Bore Type | Round |
Material | Through Hardened Steel |
Limiting Speed - Oil | 4700 RPM |
Limiting Speed - Grease | 3600 RPM |
Style | Cone & Cup |
Precision Rating | Class 0 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.40 |
Y2 (Axial Load Factor) | 1.51 |
Y0 (Axial Load Factor) | 0.83 |
Static Load Rating | 37000 lbf164000 N164.00 kN |
Dynamic Load Rating | 25400 lbf113000 N113.00 kN |
Enclosure | Open |
Weight | 5.379 lb2.440 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.3622 in60.000 mm |
D | 3.9370 in100.000 mm |
C | 0.9055 in23.000 mm |
B | 1.1811 in30.000 mm |
a (Effective Load Center) | -0.2559 in-6.500 mm |
T | 1.1811 in30.000 mm |
r | 0.0600 in1.500 mm |
R | 0.06 in1.5 mm |
da | 2.70 in68.5 mm |
db | 2.64 in67.0 mm |
Da | 3.60 in91.5 mm |
Da min | 3.46 in88.0 mm |
Db | 3.78 in96.0 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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