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NSN: 3110-00-001-8160
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Part Numbers

Item Number Item Description
AC9881 Bearing, Roller, Needle

Master Requirement Codes

Code Translation
AGZA Indicates the type of alignment utilized whereby the item will adjust axially for misalignment.
ABXV The length of a straight line which passes through the center of a circular bore, and terminates at the circumference.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
LMDC The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the lubrication material.
ADZG The element, compound, or mixture with which the item is lubricated.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
AGYF The means used in manufacturing the retainer.
ADGA The overall length of a straight line which passes through the center of an item, and terminates at the outside circumference.
FEAT Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
STYL The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
AGYE An additional finishing process by which the surface of an item is altered in respect to polishing, grinding, and the like.
SFTT The metallic, nonmetallic, and/or chemical properties with which the item is plated, dipped, and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
SFTT The metallic, nonmetallic, and/or chemical properties with which the item is plated, dipped, and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

AC9881 Needle Roller Bearing

Cage 3NPS1

Technical Definition

Bearing, Roller, Needle, also referenced with federal logistics item name code 00051 - A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.

Technical Characteristics

Alignment Type (AGZA):
Rigid
Bore Diameter (ABXV):
0.3128 inches maximum
Material (MATT):
Steel comp e52100 overall
Outer Ring Width (AGVT):
0.9688 inches nominal
Inner Ring Width (AGVU):
1.0025 inches maximum
Lubrication Material Document And Classification (LMDC):
Mil-g-23827 mil spec single material response
Lubrication Material (ADZG):
Grease
Material Document And Classification (MDCL):
66 fed std single material response overall
Retainer Fabrication Method (AGYF):
Pressed
Overall Outside Diameter (ADGA):
0.8130 inches maximum
Special Features (FEAT):
No oil hole in inner or outer ring
Style Designator (STYL):
Cam roller, hardened and ground, non-separable
Surface Finish (AGYE):
Ground
Surface Treatment (SFTT):
Cadmium inner ring
Surface Treatment (SFTT):
Chromium outer ring

National Stock Number (NSN)

3110-00-001-8160