NSN 3110-00-863-1211, 3110008631211
BEARING,BALL,DUPLEX

Federal Supply Classification: FSC 3110 - Bearings, Antifriction, Unmounted
National Item Identification Number: NIIN 008631211
Codification Country: United States
Item Name Code: INC 30213
Criticality: (N) This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input).
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 3110-00-863-1211

National Stock Number (NSN) 3110-00-863-1211, or NIIN 008631211, (bearing,ball,duplex) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 6 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 16, 1995, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 30213. [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.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3110008631211 contains an unknown precious metal.

This NSN is associated to Schedule B 8482105068: ball bearings, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332991: ball and roller bearing manufacturing.

This information was last updated on Jun 01, 2025.

Technical Characteristics

BEARING PRELOAD RATING: (CTHQ) 1000.0 POUNDS NOMINAL
BORE DIAMETER: (ABXV) 55.0 MILLIMETERS NOMINAL
INTERNAL CLEARANCE: (AKVV) 0.0080 INCHES NOMINAL AXIAL AND 0.0008 INCHES MINIMUM RADIAL AND 0.0017 INCHES MAXIMUM RADIAL
LOAD DIRECTION: (AGZC) ANGULAR
OVERALL OUTSIDE DIAMETER: (ADGA) 80.0 MILLIMETERS NOMINAL
OVERALL WIDTH: (ABMK) 26.0 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) UNABLE TO DECODE
MATERIAL: (MATT) UNABLE TO DECODE
RETAINER FABRICATION METHOD: (AGYF) MACHINED
SPECIAL FEATURES: (FEAT) STABILIZED FOR OPERATION AT 65 DEG F TO P 350 DEG F,THRUST MARKING (V) ON OD OF OUTER RINGS,MAX SURFACE FINISH,BALL 2 UIN AA,INNER AND OUTER RING GROOVE 10 UIN AA,RACE RETAINER PILOT SURFACE 20 UIN AA,RETAINER PILOTSURFACE 40 UIN AA,RETAINER BALL POCKET63 UIN AA,ID AND OD 13 UIN AA,RETAINERBORE CONCENTRIC TO OD WITHIN 0.002 IN.TIR
STANDARD TOLERANCE DESIGNATION: (CTFZ) ABEC NO.5
STYLE DESIGNATOR: (STYL) COUNTERBORED OUTER RINGS, NON-SEPARABLE, TANDEM MOUNTING
SURFACE FINISH: (AGYE) GROUND
TEST DATA DOCUMENT: (TEST) +6903-91547 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) -4001,91547 MFR REF SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) -4001,91547 MFR REF SINGLE MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) -4001,91547 MFR REF SINGLE MATERIAL RESPONSE OUTER RING
MATERIAL: (MATT) STEEL INNER RING
MATERIAL: (MATT) COPPER ALLOY RETAINER
MATERIAL: (MATT) STEEL OUTER RING
STYLE DESIGNATOR: (STYL) 92D COUNTERBORED OUTER RINGS, NON-SEPARABLE, TANDEM MOUNTING
MATERIAL: (MATT) STEEL BALL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) -3900,91547 MFR REF SINGLE MATERIAL RESPONSE RETAINER