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NTN 5211CLLU double-row angular contact ball bearing with a 55 mm straight bore. Double sealed with contact rubber seals on both sides for contaminant protection. Steel cage and high carbon chrome steel construction. Suitable for applications requiring combined radial and axial loads in a compact design.
MODEL 5211CLLU
$147.10 Each
Prices are subject to change
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Returnable:No
a (in)
2.3819
B (in)
1.3110
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
Two
Contact angle
25 º
D (in)
3.9370
d (in)
2.1654
Da max
3.5827 in
Dynamic Load Rating
12600 lbf
Dynamic load rating
12600 lbf
Enclosure
Double Sealed
I.D.
55 mm
Limiting Speed - Grease
4300 RPM
Limiting speed - grease
4300 RPM
Material
High carbon chrome steel
O.D.
100 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
Class 0
r (in)
0.0591
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0591 in
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Seal Type
Contact
Seal type
Contact
Static Load Rating
11000 lbf
Static load rating
11000 lbf
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Outside Ring Type | Straight |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Grease | 4300 RPM |
Seal Type | Contact |
Seal Material | Nitrile Rubber |
Precision | Class 0 |
Configuration | Two |
Radial Internal Clearance | CN |
Static Load Rating | 11000 lbf49000 N49.00 kN |
Dynamic Load Rating | 12600 lbf56000 N56.00 kN |
Enclosure | Double Sealed |
Weight | 2.176 lb0.987 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 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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