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NTN 6307LLUAC3 is a 63 series single-row deep groove ball bearing with a 35 mm straight bore. It features double contact seals (NBR) and a stamped steel cage. The C3 internal clearance accommodates thermal expansion. Constructed from high carbon chrome steel, it is suitable for electric motors, pumps, and general rotating machinery.
MODEL 6307LLUAC3
$81.90 Each
Prices are subject to change
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Returnable:No
B (in)
0.8268
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Steel
Cage material
Steel
Cage Type
Pressed
Cage type
Pressed
d (in)
1.3780
D (in)
3.1496
Da max
2.8346 in
da max
1.8504 in
da min
1.6929 in
Dynamic Load Rating
8310 lbf
Dynamic load rating
8310 lbf
Enclosure
Double Sealed
Factor
13.1
I.D.
35 mm
Limiting Speed - Grease
6000 RPM
Limiting speed - grease
6000 RPM
Material
High carbon chrome steel
O.D.
80 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0591
r1
0.0197 in
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0591 in
Seal Material
Polyacrylic
Seal material
Polyacrylic
Seal Type
Contact
Seal type
Contact
Static Load Rating
4300 lbf
Static load rating
4300 lbf
Type
Deep Groove Ball Bearing
Width
21 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 | 6000 RPM |
Seal Type | Contact |
Seal Material | Polyacrylic |
Precision | ISO Class 0 |
Factor | 13.1 |
Radial Internal Clearance | C3 |
Static Load Rating | 4300 lbf19100 N19.10 kN |
Dynamic Load Rating | 7550 lbf33500 N33.50 kN |
Enclosure | Double Sealed |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.3780 in35.000 mm |
|---|---|
D | 3.1496 in80.000 mm |
B | 0.8268 in21.000 mm |
r | 0.0591 in1.500 mm |
r1 | 0.0197 in0.500 mm |
da min | 1.6929 in43.000 mm |
da max | 1.8504 in47.000 mm |
Da max | 2.8346 in72.000 mm |
ras max | 0.0591 in1.500 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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