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NTN 42375/42584 is an inch series tapered roller bearing set consisting of cone 42375 and cup 42584. It features a straight bore, open design, and case carburized steel construction for durability under heavy radial and axial loads. Suitable for industrial gearboxes, axle housings, and vehicle wheel hubs.
MODEL 42375/42584
$199.37 Each
Prices are subject to change
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Returnable: See conditions
a (Effective Load Center)
0.1200 in
B (in)
3.7500
Bore type
Round
Bore Type
Round
Cone Number
42375
Configuration
One
Cup Number
42584
D (in)
5.8437
Dynamic load rating
33500 lbf
Dynamic Load Rating
33500 lbf
e (Axial Load Factor)
0.49
Enclosure
Open
I.D.
3.75 in
Lubrication
w/o Oil Hole
Material
Case Carburized Steel
O.D.
5.8437 in
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision rating
Class 4
Precision Rating
Class 4
R (in)
0.12
r (in)
0.1200
Static load rating
54500 lbf
Static Load Rating
54500 lbf
Style
Cone & Cup
Type
Tapered Roller Bearing
U
4.25 in
V
4.06 in
W
1.1250 in
Wi
1.1406 in
Wo
0.8438 in
X
5.59 in
Y2 (Axial Load Factor)
1.22
Z
5.28 in
Technical Specifications
Type | Tapered Roller Bearing |
Bore Type | Round |
Material | Case Carburized Steel |
Style | Cone & Cup |
Precision Rating | Class 4 |
Cone Number | 42375 |
Cup Number | 42584 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.49 |
Y2 (Axial Load Factor) | 1.22 |
Static Load Rating | 54500 lbf242000 N242.00 kN |
Dynamic Load Rating | 33500 lbf150000 N150.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
B | 3.7500 in95.250 mm |
D | 5.8437 in148.430 mm |
Wo | 0.8438 in21.433 mm |
Wi | 1.1406 in28.971 mm |
W | 1.1250 in28.575 mm |
r | 0.1200 in3.000 mm |
R | 0.12 in3.0 mm |
a (Effective Load Center) | 0.1200 in3.000 mm |
U | 4.25 in108.0 mm |
V | 4.06 in103.0 mm |
X | 5.59 in142.0 mm |
Z | 5.28 in134.0 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.
| Brand | Boston Gear |
| Model | HF721-10-B7-H-P20 |
