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The NTN 6704LLF is a single-row deep groove ball bearing with a 20 mm straight bore. It features double non-contact rubber seals (LLF) for low-friction sealing. This thin-section bearing is designed for compact applications requiring radial load support.
MODEL 6704LLF
$90.02 Each
Prices are subject to change
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Returnable:No
B (in)
0.1575
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Stainless Steel
Cage material
Stainless steel
Cage Type
Crown
Cage type
Crown
Configuration
One
D (in)
1.0630
d (in)
0.7874
Da max
1.0000 in
da max
0.8780 in
da min
0.8504 in
Dynamic Load Rating
250 lbf
Dynamic load rating
250 lbf
Enclosure
Double Sealed
Factor
16.1
I.D.
20 mm
Limiting Speed - Grease
5000 RPM
Limiting speed - grease
5000 RPM
Material
High carbon chrome steel
O.D.
27 mm
Operating Temperature Range
-40 to 284 °F
Operating temperature range
-40 to 284 ºF
Precision
ISO class 0
r (in)
0.0079
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0079 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Non-Contact
Seal type
Non-Contact
Static Load Rating
164 lbf
Static load rating
164 lbf
Type
Deep Groove Ball Bearing
Technical Specifications
Type | Deep Groove Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Crown |
Cage Material | Stainless Steel |
Ball Material | Steel |
Limiting Speed - Grease | 5000 RPM |
Seal Type | Non-Contact |
Seal Material | Nitrile Rubber |
Precision | ISO Class 0 |
Configuration | One |
Factor | 16.1 |
Radial Internal Clearance | CN |
Static Load Rating | 164 lbf730 N0.73 kN |
Dynamic Load Rating | 234 lbf1040 N1.04 kN |
Enclosure | Double Sealed |
Weight | 0.013 lb0.006 kg |
Operating Temperature Range | -40 to 284 F-40 to 140 C |
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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