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The NTN 6905LLU is a 6900 series single-row deep groove ball bearing with a 25 mm straight bore. It features double contact rubber seals (LLU) for effective contaminant exclusion. This bearing is designed for light-duty applications such as small electric motors, power tools, and instrumentation.
MODEL 6905LLU
$8.90 Each
Prices are subject to change
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Returnable:No
B (in)
0.3543
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)
1.6535
d (in)
0.9843
Da max
1.5748 in
da max
1.1417 in
Dynamic Load Rating
1750 lbf
Dynamic load rating
1750 lbf
Enclosure
Double Sealed
Factor
15.4
I.D.
25 mm
Limiting Speed - Grease
9800 RPM
Limiting speed - grease
9800 RPM
Material
High carbon chrome steel
O.D.
42 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0118
r1
0.0118 in
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0118 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
1020 lbf
Static load rating
1020 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 |
Contact |
Seal Material |
Nitrile Rubber |
Precision |
ISO Class 0 |
Configuration |
One |
Factor |
15.4 |
Radial Internal Clearance |
CN |
Static Load Rating |
1020 lbf4550 N4.55 kN |
Dynamic Load Rating |
1580 lbf7050 N7.05 kN |
Enclosure |
Double Sealed |
Weight |
0.095 lb0.043 kg |
Operating Temperature Range |
-40 to 250 F-40 to 120 C |
Dimensional Specifications
|
|
|
d |
0.9843 in25.000 mm |
D |
1.6535 in42.000 mm |
B |
0.3543 in9.000 mm |
r |
0.0118 in0.300 mm |
r1 |
0.0118 in0.300 mm |
da max |
1.1417 in29.000 mm |
Da max |
1.5748 in40.000 mm |
ras max |
0.0118 in0.300 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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