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National Stock Number:
3120-01-305-4393
Federal Supply Class:
3120
National Item Identification Number:
013054393
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:
| 1292-102-001 | 97578 | TIMKEN GEARS & SERVICES INC. |
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Techincal Specification:
| DIAMETER | 4.6880 INCHES NOMINAL | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OUTER LAYER | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-T-390,GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE INNER LAYER | | MATERIAL | STEEL COMP 1018 OUTER LAYER | | MATERIAL | TIN ALLOY UNS L13890 INNER LAYER | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE DIAMETER | 8.4950 INCHES MINIMUM AND 8.4980 INCHES MAXIMUM | | OVERALL THICKNESS | 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | SPECIAL FEATURES | 6 HOLES ON OD 0.125 IN. DIA X 1.300 IN. DEEP; 6 ADDITIONAL EQUALLY SPACED HOLES ON A 6.000 IN. DIA BOLT CIRCLE,0.062 IN. DIA X 0.190 IN. DEEP; 2 SLOTS ON OD 0.250 IN. W BY 0.250 IN. DEEP | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 63.0 MICROINCHES RIGHT SIDE | | SURFACE FINISH | 32.0 MICROINCHES LEFT SIDE |
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