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NTN MUB1308UM is a non-separable cylindrical roller bearing with a straight 40 mm bore. The inner ring has two ribs and the outer ring has one rib, with a retaining ring. This open design is made of hardened alloy steel and accommodates moderate axial loads in one direction. Suitable for gearboxes, pumps, and industrial machinery.
MODEL MUB1308UM
$134.79 Each
Prices are subject to change
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Returnable:No
B (in)
1.3780
Bore Type
Round
Bore type
Round
C (in)
3.0579
Cage material
None
Configuration
One
D (in)
3.5433
Dynamic Load Rating
21600 lbf
Dynamic load rating
21600 lbf
Enclosure
Open
F (in)
2.2441
H (in)
2.8870
Material
Hardened alloy steel
Oil Hole
w/o Oil Hole
Oil hole
w/o Oil Hole
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
R (in)
0.0598
r (in)
0.0598
Radial Internal Clearance
CN
Radial internal clearance
CN
Static Load Rating
23800 lbf
Static load rating
23800 lbf
Tolerance
ISO class 0 (RBEC 1)
Type
Cylindrical Roller Bearing
V (Rib Rings)
2.2780 in
W
0.9055 in
X (Plain Rings)
3.0575 in
Z (Rib Rings)
2.8870 in
Technical Specifications
Type | Cylindrical Roller Bearing |
Bore Type | Round |
Material | Hardened Alloy Steel |
Cage Material | None |
Configuration | One |
Tolerance | ISO Class 0 (RBEC 1) |
Oil Hole | w/o Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 23800 lbf106000 N106.00 kN |
Dynamic Load Rating | 21600 lbf96000 N96.00 kN |
Enclosure | Open |
Weight | 1.715 lb0.778 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
B | 1.3780 in35.000 mm |
D | 3.5433 in90.000 mm |
W | 0.9055 in23.000 mm |
C | 3.0579 in77.670 mm |
F | 2.2441 in57.000 mm |
H | 2.8870 in73.330 mm |
R | 0.0598 in1.520 mm |
V (Rib Rings) | 2.2780 in57.860 mm |
X (Plain Rings) | 3.0575 in77.660 mm |
Z (Rib Rings) | 2.8870 in73.330 mm |
r | 0.0598 in1.520 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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