3120-01-162-5786, BEARING,WASHER,THRUST

National Stock Number:
3120-01-162-5786

Federal Supply Class:
3120

National Item Identification Number:
011625786

Description:
BEARING,WASHER,THRUST

Detail:
An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also WASHER, FLAT and SPACER, SLEEVE.

Manufacturer Information:

8N2487

11083

CATERPILLAR INC

Techincal Specification:

DIAMETER	73.20 MILLIMETERS MINIMUM AND 74.80 MILLIMETERS MAXIMUM
CENTER HOLE SHAPE STYLE	ROUND
CORNER SHAPE	CHAMFERED FIRST INSIDE CORNER
CORNER SHAPE	CHAMFERED SECOND INSIDE CORNER
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
CORNER SHAPE	SQUARE SECOND OUTSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HARDNESS RATING	73.0 ROCKWELL SUPERFICIAL 30-N MINIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	1E320,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
PROPRIETARY CHARACTERISTICS	PACS
OUTSIDE DIAMETER	36.680 MILLIMETERS MINIMUM AND 36.720 MILLIMETERS MAXIMUM
OVERALL THICKNESS	4.95 MILLIMETERS MINIMUM AND 5.05 MILLIMETERS MAXIMUM
STYLE DESIGNATOR	ROUND
SURFACE CONDITION	GROUND
SURFACE FINISH	1.6 MICROINCHES LEFT SIDE
SURFACE FINISH	1.6 MICROINCHES RIGHT SIDE
SURFACE FINISH	3.2 MICROINCHES INSIDE DIAMETER SURFACE OF BODY

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