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NTN MA1307EL is a separable cylindrical roller bearing with a plain inner ring and an outer ring with two ribs. The 35 mm straight bore and MA type design suit heavy-duty industrial-mill applications. This bearing accommodates axial expansion and provides high radial load capacity.
MODEL MA1307EL
$98.26 Each
Prices are subject to change
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Returnable:No
A (in)
1.8441
B (in)
1.3780
Bore Type
Round
Bore type
Round
Cage Material
Composite Steel
Cage material
Composite steel
Configuration
One
D (in)
3.1496
Dynamic Load Rating
15500 lbf
Dynamic load rating
15500 lbf
Enclosure
Open
H (in)
2.5382
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
16700 lbf
Static load rating
16700 lbf
Tolerance
ISO class 0 (RBEC 1)
Type
Cylindrical Roller Bearing
U (Plain Rings)
1.7205 in
V (Rib Rings)
1.8386 in
W
0.8268 in
X (Plain Rings)
2.8110 in
Z (Rib Rings)
2.6693 in
Technical Specifications
Type | Cylindrical Roller Bearing |
Bore Type | Round |
Material | Hardened Alloy Steel |
Cage Material | Composite Steel |
Configuration | One |
Tolerance | ISO Class 0 (RBEC 1) |
Oil Hole | w/o Oil Hole |
Radial Internal Clearance | CN |
Static Load Rating | 16700 lbf74500 N74.50 kN |
Dynamic Load Rating | 15500 lbf69000 N69.00 kN |
Enclosure | Open |
Weight | 1.252 lb0.568 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
B | 1.3780 in35.000 mm |
D | 3.1496 in80.000 mm |
W | 0.8268 in21.000 mm |
A | 1.8441 in46.840 mm |
H | 2.5382 in64.470 mm |
R | 0.0598 in1.520 mm |
U (Plain Rings) | 1.7205 in43.700 mm |
V (Rib Rings) | 1.8386 in46.700 mm |
X (Plain Rings) | 2.8110 in71.400 mm |
Z (Rib Rings) | 2.6693 in67.800 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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