NTN 5212 Double Row Angular Contact Bearing - 60 mm Bore, 110 mm OD, 1.4375 in Width, Open, Without Snap Ring, 25 ° Contact Angle

SKU: NTN 5212

$48.99

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NTN5212

Double Row Angular Contact Bearing - 60 mm Bore, 110 mm OD, 1.4375 in Width, Open, Without Snap Ring, 25 ° Contact Angle



SPECIFICATIONS

Bore Diameter 60 mm
Outside Diameter 110 mm
Width 1.4375 in
Overall Width 1.4370 in, 36.500 mm
Contact Angle 25 °
Row Type & Fill Slot Double-Row Non-Fill Slot
Closure Type Open
Cage Type Pressed
Internal Clearance C0
Snap Ring Included Without Snap Ring
Bearing Material High Carbon Chrome Steel
Radial Dynamic Load Capacity 69000 N
Radial Static Load Capacity 62000 N
Cage Material Steel
Harmonization Code 8482.10.5028
Outer Ring Width 36.5 mm
Inner Ring Width 1.4370 in, 36.500 mm
Configuration Two
Maximum RPM (Grease) 3800 rpm
Maximum RPM 5000 rpm
Finish/Coating Uncoated
Precision Rating Class 0
Fillet Radius 1.5 mm
Series 52
Dynamic Load Capacity 15500 lbf
Static Load Capacity 13900 lbf
Weight 2.76 lbs
Manufacturer UPC Number 4547359538144





Angular Contact Ball Bearings




1. Design features and characteristics

1.1  Angular contact ball bearing

Angular contact ball bearings are non-separable bearings with a defined contact angle in the radial direction relative to the straight line that runs through the point where each ball makes contact with the inner and outer rings (see Fig. 1). Table 1 provides information on contact angles and their designated codes.

In addition to radial loads, angular contact ball bearings can accommodate single direction axial loads. Since an axial load is generated from a radial force, these bearings are generally used in pairs. Table 2 shows general angular contact ball bearing characteristics, Table 3 shows information on using duplex (side by side) angular contact ball bearings, and Table 4 shows information on multiple-row angular contact ball bearings.

For bearings with a contact angle of 15° and bearing tolerance JIS Class 5 or higher, see special catalog “Precision rolling bearings (CAT. No. 2260/E)”.

 

 

1.2  Four-point angular contact ball bearings


Four-point angular contact ball bearings have a contact angle of 30° and a split inner ring. As shown in Fig. 2, when the inner and outer rings receive a radial load, the ball contacts the inner and outer rings at four points. This construction enables a single bearing to accommodate axial loads from either direction, and when under a simple axial load or heavy axial load, the bearing relies on two contact points like ordinary bearings.


 

1.3  Double row angular contact ball bearings

The structure of double row angular contact ball bearings is designed by arranging two single row angular contact bearings back-to-back in duplex (DB) to form a single bearing with a contact angle of 25°.
These bearings are capable of accommodating radial loads, axial loads in either direction, and have a high capacity for moment loads.
As shown in Fig. 4, sealed and shielded type double row angular contact ball bearings are also available. Standard loads vary from those of open type bearings.

 



 

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