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NTN 6312LUC3 is a 63 series single-row deep groove ball bearing with a 60 mm straight bore. It features a single rubber contact seal (LU) on one side, a stamped steel cage, and C3 internal clearance. Constructed from high carbon chrome steel, it is suitable for electric motors, pumps, and general industrial rotating machinery.
MODEL 6312LUC3
$144.08 Each
Prices are subject to change
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Returnable:No
B (in)
1.2205
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Steel
Cage material
Steel
Cage Type
Pressed
Cage type
Pressed
Configuration
One
d (in)
2.3622
D (in)
5.1181
Da max
4.6850 in
da max
3.1693 in
da min
2.7953 in
Dynamic Load Rating
20340 lbf
Dynamic load rating
20340 lbf
Enclosure
Single Sealed
Factor
119.0
I.D.
60 mm
Limiting Speed - Grease
3600 RPM
Limiting speed - grease
3600 RPM
Material
High carbon chrome steel
O.D.
130 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0827
r1
0.0197 in
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0787 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
11700 lbf
Static load rating
11700 lbf
Type
Deep Groove Ball Bearing
Width
31 mm
Technical Specifications
Type | Deep Groove Ball Bearing |
|---|---|
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Grease | 3600 RPM |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Precision | ISO Class 0 |
Configuration | One |
Factor | 119.0 |
Radial Internal Clearance | C3 |
Static Load Rating | 11700 lbf52000 N52.00 kN |
Dynamic Load Rating | 18400 lbf82000 N82.00 kN |
Enclosure | Single Sealed |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 2.3622 in60.000 mm |
|---|---|
D | 5.1181 in130.000 mm |
B | 1.2205 in31.000 mm |
r | 0.0827 in2.100 mm |
r1 | 0.0197 in0.500 mm |
da min | 2.7953 in71.000 mm |
da max | 3.1693 in80.500 mm |
Da max | 4.6850 in119.000 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.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
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Model
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