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National Stock Number:
3020-00-870-3787
Federal Supply Class:
3020
National Item Identification Number:
008703787
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:
| 2107858 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | TEETH QUANTITY | 128 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | BACKLASH DESIGNATION | GRADE C | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 2.0000 INCHES NOMINAL | | NOMINAL OVERALL LENGTH | 0.375 INCHES | | ATTACHMENT METHOD | MOUNTING HOLE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18876 | | DESIGN CONTROL REFERENCE | 2107858 |
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