MB539DD

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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-069-2768

Item Name Code

00041

Assigment Date

12/12/1978 (47 years ago)

An outer component of a tapered roller bearing which provides a contact surface for the rolling elements of the bearing.

0.7495 inches minimum and 0.7500 inches maximum bore diameter, 1.1870 inches minimum and 1.1875 inches maximum overall outside diameter, 0.2785 inches minimum and 0.2810 inches maximum inner ring width, 0.2450 inches minimum and 0.2500 inches maximum outer ring width, 2 seal quantity

Product Characteristics

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

Bore Diameter: 0.7495 inches minimum and 0.7500 inches maximum
Overall Outside Diameter: 1.1870 inches minimum and 1.1875 inches maximum
Outer Ring Width: 0.2450 inches minimum and 0.2500 inches maximum
Inner Ring Width: 0.2785 inches minimum and 0.2810 inches maximum
Seal Quantity: 2
Bearing Seal Type: contact
Load Direction: radial
Special Features: 80 pct full of specified lubricant,heat stabilized for continuous operation at 250 deg f,all external surfaces except bore and seal retainers cadmium plated per qq-p-416,type 1,class 2
Lubrication Material: grease
Lubrication Material Document And Classification: mil-g-81322 mil spec single material response
Material: plastic polytetrafluoroethylene seal
Material: steel comp e52100 ball
Material: steel comp e52100 inner ring
Material: steel comp e52100 outer ring
Material Document And Classification: 66 fed std single material response ball
Material Document And Classification: 66 fed std single material response inner ring
Material Document And Classification: 66 fed std single material response outer ring
Material Document And Classification: ams 3652 assn std single material response seal
Style Designator: single row inner ring extended both sides

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
859629	Airframe Ball Bearing
MB539DD	Airframe Ball Bearing
MB539DD FS464	Airframe Ball Bearing
MS21428-39	Airframe Ball Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-069-2768?

The FSCG of the NSN 3110-01-069-2768 is 3110

Does the NSN 3110-01-069-2768 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105068

Does NSN 3110-01-069-2768 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 3110-01-069-2768 contain precious materials?

Precious metal content is unknown

Does NSN 3110-01-069-2768 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 3110-01-069-2768 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Tue, Dec 12, 1978