28303

View detailed technical data, stock status, and sourcing information for: 28303
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-151-9553

Item Name Code

00021

Assigment Date

01/01/1961 (65 years ago)

A cylindrical device in which the inner cone or outer cup turns upon a single or double row of tapered hardened rollers which roll easily in a race, thus minimizing friction and designed to carry a radial load and capable of sustaining axial thrust. Excludes:bearing,roller,thrust.

1.4375 inches nominal bore diameter, 2.1875 inches nominal overall width, 0.0620 inches nominal backface corner radius, 3.6250 inches nominal overall outside diameter, 0.3125 inches nominal standout width

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Width: 2.1875 inches nominal
Bore Diameter: 1.4375 inches nominal
Overall Outside Diameter: 3.6250 inches nominal
Backface Corner Radius: 0.0620 inches nominal
Standout Width: 0.3125 inches nominal
Cone Corner Radius: 0.0310 inches nominal
Cup Width: 1.5625 inches nominal
Retainer Fabrication Method: pressed
Standard Tolerance Designation: afbma class 4
Special Features: operating temperature not to exceed 121 deg c/250 deg f; oil hole and groove in cup; 0.0040 in. min,0.0060 in. max bench lateral
Material: steel overall
Style Designator: straight bore, double cup, single cones, steep angle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2815-00-296-9850	No Name Available	06/29/1970
3110-00-922-3416	No Name Available	03/12/1969

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
28303	Tapered Roller Bearing
3372	Tapered Roller Bearing
4920A	Tapered Roller Bearing
91117805	Tapered Roller Bearing
926261	Tapered Roller Bearing
MS19089-10	Tapered Roller Bearing
NA44143-44363D	Tapered Roller Bearing
X3372	Tapered Roller Bearing

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3110-00-151-9553?

The FSCG of the NSN 3110-00-151-9553 is 3110

Does the NSN 3110-00-151-9553 have a Schedule B code assigned?

Yes, the Schedule B code is 8482200030

Does NSN 3110-00-151-9553 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3110-00-151-9553 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-151-9553 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 3110-00-151-9553 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961