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NTN 6909LLBC3 is a single-row deep groove ball bearing with a 45 mm straight bore. It features double non-contact rubber seals and a steel cage. Constructed from high carbon chrome steel, this bearing is suitable for electric motors, pumps, and general rotating machinery.
MODEL 6909LLBC3
$212.17 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)
2.6772
d (in)
1.7717
Da max
2.5197 in
da max
2.0079 in
da min
1.9291 in
Dynamic Load Rating
3250 lbf
Dynamic load rating
3250 lbf
Enclosure
Double Sealed
Factor
16.1
I.D.
45 mm
Limiting Speed - Grease
9800 RPM
Limiting speed - grease
9800 RPM
Material
High carbon chrome steel
O.D.
68 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
C3
Radial internal clearance
C3
ras max
0.0236 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Non-Contact
Seal type
Non-Contact
Static Load Rating
2340 lbf
Static load rating
2340 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 | 9800 RPM |
Seal Type | Non-Contact |
Seal Material | Nitrile Rubber |
Precision | ISO Class 0 |
Configuration | One |
Factor | 16.1 |
Radial Internal Clearance | C3 |
Static Load Rating | 2340 lbf10400 N10.40 kN |
Dynamic Load Rating | 2950 lbf13100 N13.10 kN |
Enclosure | Double Sealed |
Weight | 0.295 lb0.134 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.7717 in45.000 mm |
D | 2.6772 in68.000 mm |
B | 0.4724 in12.000 mm |
r | 0.0236 in0.600 mm |
r1 | 0.0197 in0.500 mm |
da min | 1.9291 in49.000 mm |
da max | 2.0079 in51.000 mm |
Da max | 2.5197 in64.000 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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