3120-01-612-3181 BUSHING,SLEEVE 3130-01-611-8437 BEARING UNIT,BALL

National Stock Number:
3120-01-612-7228

Federal Supply Class:
3120

National Item Identification Number:
016127228

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:
3750K707BY4MCMASTER-CARR SUPPLY CO


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER0.50 INCHES NOMINAL
MATERIALBRONZE OVERALL
MATERIALOIL LUBRICATING LUBRICATION
PART NAME ASSIGNED BY CONTROLLING AGENCYULTRA-TOUGH OIL-LUBRICATED BRONZE THRUST BEARING
OUTSIDE DIAMETER1.00 INCHES NOMINAL
OVERALL THICKNESS0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
SPECIAL FEATURESBEARING IS IMPREGNATED WITH OIL. TEMPERATURE RANGE IS 10 TO 220 DEGREES F. P MAX IS 8000, V MAX IS 35, AND PV MAX IS 75000
STYLE DESIGNATORROUND
SURFACE TREATMENTOIL OUTER LAYER


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