740840

View detailed technical data, stock status, and sourcing information for: 740840
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-089-0688

Item Name Code

00015

Assigment Date

01/25/1980 (46 years ago)

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

unground surface finish, 0.5856 inches minimum and 0.5906 inches maximum overall width, j75 engine end item identification, 0.9841 inches minimum and 0.9843 inches maximum bore diameter, 2.0469 inches minimum and 2.0472 inches maximum overall outside diameter

Product Characteristics

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

Overall Width: 0.5856 inches minimum and 0.5906 inches maximum
Bore Diameter: 0.9841 inches minimum and 0.9843 inches maximum
Overall Outside Diameter: 2.0469 inches minimum and 2.0472 inches maximum
End Item Identification: j75 engine
Surface Finish: unground
Bore Shape: straight
Locating Feature: nonlocating
Standard Tolerance Designation: rbec no.5
Special Features: cage silver plate per ams 2412 .001-.002 thick on land surf and roller pockets. bake at 475-500 f for 2hours to check for bond. rollers and ringsmust be stabilized for min distortion at 600 f
Material: steel comp 4340 separator
Material: steel inner ring
Material: steel outer ring
Material: steel roller
Material Document And Classification: pwa-725,97497 mfr ref 3rd material response roller
Material Document And Classification: pwa-725,97497 mfr ref 1st material response outer ring
Material Document And Classification: pwa-725,97497 mfr ref 2nd material response inner ring
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
740839	Cylindrical Roller Bearing
740840	Cylindrical Roller Bearing
792904	Cylindrical Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-089-0688?

The FSCG of the NSN 3110-01-089-0688 is 3110

Does the NSN 3110-01-089-0688 have a Schedule B code assigned?

Yes, the Schedule B code is 8482500000

Does NSN 3110-01-089-0688 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 3110-01-089-0688 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-089-0688 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 3110-01-089-0688 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Fri, Jan 25, 1980