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NTN 32307C is a single row metric tapered roller bearing with a 35 mm straight bore. This open bearing features a case carburized steel construction for durability under heavy radial and axial loads. It is designed for gearboxes, wheel hubs, and industrial machinery requiring high load capacity.
MODEL 32307C
$84.49 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
-0.3051 in
B (in)
1.2205
Bore Type
Round
Bore type
Round
C (in)
0.9843
Configuration
One
d (in)
1.3780
D (in)
3.1496
da
45.0 mm
Da
2.81 in
Da min
2.60 in
Db
2.99 in
db
1.69 in
Dynamic Load Rating
20900 lbf
Dynamic load rating
20900 lbf
e (Axial Load Factor)
0.55
Enclosure
Open
I.D.
1.378 in
Limiting Speed - Grease
4800 RPM
Limiting speed - grease
4800 RPM
Limiting Speed - Oil
6400 RPM
Limiting speed - oil
6400 RPM
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
3.1496 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)
0.0600
R (in)
0.08
r1as max
0.0591 in
ras max
0.0787 in
Static Load Rating
26300 lbf
Static load rating
26300 lbf
Style
Cone & cup
T (in)
1.2894
Type
Tapered Roller Bearing
Y0 (Axial Load Factor)
0.6
Y2 (Axial Load Factor)
1.10
Technical Specifications
Type | Tapered Roller Bearing |
Bore Type | Round |
Material | Case Carburized Steel |
Limiting Speed - Oil | 6400 RPM |
Limiting Speed - Grease | 4800 RPM |
Style | Cone & Cup |
Precision Rating | Class 0 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.55 |
Y2 (Axial Load Factor) | 1.1 |
Y0 (Axial Load Factor) | 0.60 |
Static Load Rating | 26300 lbf117000 N117.00 kN |
Dynamic Load Rating | 20900 lbf93000 N93.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.3780 in35.000 mm |
D | 3.1496 in80.000 mm |
C | 0.9843 in25.000 mm |
B | 1.2205 in31.000 mm |
a (Effective Load Center) | -0.3051 in-7.750 mm |
r1as max | 0.0591 in2.000 mm |
T | 1.2894 in32.750 mm |
r | 0.0600 in1.500 mm |
R | 0.08 in2.0 mm |
da | 45.0 mm |
db | 1.69 in43.0 mm |
Da | 2.81 in71.5 mm |
Da min | 2.60 in66.0 mm |
Db | 2.99 in76.0 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.