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National Stock Number:
3020-00-462-0708
Federal Supply Class:
3020
National Item Identification Number:
004620708
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:
| MGA329 | 99251 | MISSION SYSTEMS DAVENPORT INC. |
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Techincal Specification:
| MATERIAL | ALUMINUM FIRST GEAR | | ALUMINUM HUB | | ALUMINUM SECOND GEAR | | STEEL CORROSION RESISTING SPRING | | SURFACE TREATMENT | ANODIZE FIRST GEAR | | ANODIZE HUB | | ANODIZE SECOND GEAR | | PASSIVATE SPRING | | TEETH QUANTITY | 74 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 0.7708 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 0.7898 INCHES | | FACE NOMINAL WIDTH | 0.088 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.180 INCHES FIRST END | | 0.0150 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.090 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | PINNED FIRST END | | PLAIN SECOND END | | HUB NOMINAL DIAMETER | 0.3350 INCHES FIRST END | | 0.2250 INCHES SECOND END | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 99251 | | DESIGN CONTROL REFERENCE | MGA329 |
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