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National Stock Number:
3020-00-678-1632
Federal Supply Class:
3020
National Item Identification Number:
006781632
Description:
GEAR,ANTIBACKLASH,SPUR
Detail:
An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
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Manufacturer Information:
| 75-737428-1 | 04655 | GENERAL DYNAMICS MISSION SYSTEMS, INC. | | 75-737428-1 | 07397 | GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS INC. DBA GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS |
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Techincal Specification:
| MATERIAL | COPPER ALLOY FIRST GEAR | | STEEL CORROSION RESISTING HUB | | COPPER ALLOY SECOND GEAR | | STEEL CORROSION RESISTING SPRING | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 128 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 1.7778 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 1.8056 INCHES | | FACE NOMINAL WIDTH | 0.125 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.281 INCHES FIRST END | | 0.0625 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | PINNED FIRST END | | PLAIN SECOND END | | HUB NOMINAL DIAMETER | 1.1880 INCHES FIRST END | | 0.438 INCHES SECOND END | | END NOMINAL LENGTH | 0.2187 INCHES FIRST END | | END NOMINAL DIAMETER | 0.4375 INCHES FIRST END | | FIRST STEP NOMINAL LENGTH | 0.0625 INCHES FIRST END | | FIRST STEP NOMINAL DIAMETER | 1.1875 INCHES FIRST END |
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