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National Stock Number:
3120-01-137-7315
Federal Supply Class:
3120
National Item Identification Number:
011377315
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.
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Manufacturer Information:
| 65391-11631-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| BEARING SURFACE HOLE QUANTITY | 6 | | BEARING SURFACE HOLE DIAMETER | 0.2720 INCHES NOMINAL | | DIAMETER | 9.6030 INCHES NOMINAL | | OUTSIDE DIAMETER | 10.5880 INCHES NOMINAL | | OVERALL THICKNESS | 0.2180 INCHES MINIMUM AND 0.2220 INCHES MAXIMUM | | SPECIAL FEATURES | BEARING SURFACE HOLES EQUALLY SPACED ON A 10.109 IN. DIA BOLT CIRCLE; 12 SLOTS ON EACH BEARING SURFACE,0.563 IN. SPHERICAL RADIUS,0.506 IN. W,30 DEG BSC APART |
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