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Nachi Bearing 5214 Double Row Angular Contact Ball Bearing Open 20 70mm Inner Diameter x 125mm Outer Diameter x 39.7mm Width Double Row Angular Contact Ball Bearing
MODEL 5214
Contact supplier for technical support on: 800-829-5787
$174.01 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
Bore Type
Cylindrical
Cage Material
JIS S55C Steel
Closure Type
Open
Contact Angle (Deg)
20°
Dynamic Load Capacity (N)
96500
Grease Fill
No Fill
Inner Diameter (mm)
70
Inner Ring Material
JIS SUJ2 Steel
Internal Clearance
CN/C0
ISO Precision Class
P0
Limiting Speed - Grease (RPM)
3800
Limiting Speed - Oil (RPM)
5000
Max Operating Temp.
120°C (248°F)
Number of Rows
2
Outer Diameter (mm)
125
Outer Ring Material
JIS SUJ2 Steel
Preload
N/A
Rolling Element Material
JIS SUJ2 Steel
Seals or Shields
No
Series
5200
Snap Ring
No
Static Load Capacity (N)
84500
Universally (Flush) Ground
N/A
Width (mm)
5000
A double-row angular contact ball bearing is basically two single-row angular contact ball bearings with 20 deg contact angles, mounted back-to-back while contained within a narrower single bearing. These bearings occupy less axial space and can take a bi-directional axial, radial and moment loads in one bearing where it takes a matched pair otherwise. More economical than two matched single-row angular contact bearings. Single bearing yields handling and mounting benefits. More compact than two single-row bearings. Support radial and axial loads in either direction. Capable of some moment load. Sealed bearings are maintenance-free. Low noise. Energy efficient. Cost effective. Reduced friction. Long life.
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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