40631-2

View detailed technical data, stock status, and sourcing information for: 40631-2
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-191-6804

Item Name Code

00015

Assigment Date

10/11/1984 (41 years ago)

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes:bearing,ball,annular.

0.4724 inches nominal overall width, 1.5748 inches nominal bore diameter, ground surface finish, 2.4409 inches nominal overall outside diameter, b-1b air frame end item identification

Product Characteristics

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

Overall Width: 0.4724 inches nominal
Bore Diameter: 1.5748 inches nominal
Overall Outside Diameter: 2.4409 inches nominal
End Item Identification: b-1b air frame
Surface Finish: ground
Retainer Fabrication Method: machined
Bore Shape: straight
Locating Feature: nonlocating
Internal Clearance: 0.0018 inches minimum radial and 0.0028 inches maximum radial
Standard Tolerance Designation: rbec no.1
Material: copper alloy cage
Material: steel comp e52100 inner ring
Material: steel comp e52100 outer ring
Material: steel comp e52100 roller
Style Designator: single row, two-direction locating, two lip inner ring, two lip outer ring, separable

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
40631-1	Cylindrical Roller Bearing
40631-2	Cylindrical Roller Bearing
458504	Cylindrical Roller Bearing
MR1908D	Cylindrical Roller Bearing
MR1908D2	Cylindrical Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-191-6804?

The FSCG of the NSN 3110-01-191-6804 is 3110

Does the NSN 3110-01-191-6804 have a Schedule B code assigned?

Yes, the Schedule B code is 8482500000

Does NSN 3110-01-191-6804 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 3110-01-191-6804 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-191-6804 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 3110-01-191-6804 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Thu, Oct 11, 1984