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The NTN 6910LLB is a 69 series single-row deep groove ball bearing with a 50 mm bore. It features double non-contact rubber seals (LLB) for low-friction sealing. This bearing is designed for applications requiring reduced torque and protection from contaminants, such as electric motors and pumps.
MODEL 6910LLB
$202.06 Each
Prices are subject to change
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Returnable:No
B (in)
0.4724
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)
1.9685
D (in)
2.8346
da max
2.185 in
Da max
2.6772 in
da min
2.1260 in
Dynamic Load Rating
3340 lbf
Dynamic load rating
3340 lbf
Enclosure
Double Sealed
Factor
16.3
I.D.
50 mm
Limiting Speed - Grease
8900 RPM
Limiting speed - grease
8900 RPM
Material
High carbon chrome steel
O.D.
72 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0236
r1
0.0197 in
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0236 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Non-Contact
Seal type
Non-Contact
Static Load Rating
2520 lbf
Static load rating
2520 lbf
Type
Deep Groove Ball Bearing
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 | 8900 RPM |
Seal Type | Non-Contact |
Seal Material | Nitrile Rubber |
Precision | ISO Class 0 |
Configuration | One |
Factor | 16.3 |
Radial Internal Clearance | CN |
Static Load Rating | 2520 lbf11200 N11.20 kN |
Dynamic Load Rating | 3000 lbf13400 N13.40 kN |
Enclosure | Double Sealed |
Weight | 0.298 lb0.135 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.9685 in50.000 mm |
D | 2.8346 in72.000 mm |
B | 0.4724 in12.000 mm |
r | 0.0236 in0.600 mm |
r1 | 0.0197 in0.500 mm |
da min | 2.1260 in54.000 mm |
da max | 2.1850 in55.500 mm |
Da max | 2.6772 in68.000 mm |
ras max | 0.0236 in0.600 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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