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NTN 64450/64700 single row tapered roller bearing with 250 mm straight bore and open enclosure. Constructed from case carburized steel for durability in radial and axial load applications. Suitable for gearboxes, wheel hubs, and industrial machinery.
MODEL 64450/64700
$212.33 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
0.0500 in
B (in)
4.5000
Bore Type
Round
Bore type
Round
Cone Number
64450
Configuration
One
Cup Number
64700
D (in)
7.0000
Dynamic Load Rating
57500 lbf
Dynamic load rating
57500 lbf
e (Axial Load Factor)
0.52
Enclosure
Open
I.D.
4.5 in
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
7 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision Rating
Class 2
Precision rating
Class 2
R (in)
0.14
r (in)
0.1300
Static Load Rating
95500 lbf
Static load rating
95500 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
U
5.16 in
V
4.92 in
W
1.6250 in
Wi
1.6250 in
Width
1.625
Wo
1.1875 in
X
6.77 in
Y0 (Axial Load Factor)
0.64
Y2 (Axial Load Factor)
1.16
Z
6.30 in
Technical Specifications
Type |
Tapered Roller Bearing |
Bore Type |
Round |
Material |
Case Carburized Steel |
Style |
Cone & Cup |
Precision Rating |
Class 2 |
Cone Number |
64450 |
Cup Number |
64700 |
Configuration |
One |
Lubrication |
w/o Oil Hole |
e (Axial Load Factor) |
0.52 |
Y2 (Axial Load Factor) |
1.16 |
Y0 (Axial Load Factor) |
0.64 |
Static Load Rating |
95500 lbf425000 N425.00 kN |
Dynamic Load Rating |
57500 lbf255000 N255.00 kN |
Enclosure |
Open |
Weight |
7.760 lb3.520 kg |
Operating Temperature Range |
-40 to 250 F-40 to 120 C |
Dimensional Specifications
|
|
|
B |
4.5000 in114.300 mm |
D |
7.0000 in177.800 mm |
Wo |
1.1875 in30.163 mm |
Wi |
1.6250 in41.275 mm |
W |
1.6250 in41.275 mm |
r |
0.1300 in3.300 mm |
R |
0.14 in3.5 mm |
a (Effective Load Center) |
0.0500 in1.300 mm |
U |
5.16 in131.0 mm |
V |
4.92 in125.0 mm |
X |
6.77 in172.0 mm |
Z |
6.30 in160.0 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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