7311DB

View detailed technical data, stock status, and sourcing information for: 7311DB
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-156-8139

Item Name Code

30213

Assigment Date

01/01/1961 (65 years ago)

Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.

55.00 millimeters nominal bore diameter, ground surface finish, 58.0 millimeters nominal overall width, 120.00 millimeters nominal overall outside diameter, pressed retainer fabrication method

Product Characteristics

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

Overall Width: 58.0 millimeters nominal
Bore Diameter: 55.00 millimeters nominal
Overall Outside Diameter: 120.00 millimeters nominal
Surface Finish: ground
Retainer Fabrication Method: pressed
Load Direction: angular
Bearing Preload Designation: light
Standard Tolerance Designation: abec no.1
Special Features: angularity greater than 25 deg
Material: unable to decode
Style Designator: counterbored outer rings, non-separable, back to back mounting

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
7311DB	Duplex Ball Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-156-8139?

The FSCG of the NSN 3110-00-156-8139 is 3110

Does the NSN 3110-00-156-8139 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105068

Does NSN 3110-00-156-8139 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 3110-00-156-8139 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-156-8139 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 3110-00-156-8139 was assigned to the Federal Catalog?

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