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National Stock Number:
3020-00-388-9518
Federal Supply Class:
3020
National Item Identification Number:
003889518
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:
| 8007992 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | FACE NOMINAL WIDTH | 0.370 INCHES | | MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB, FIRST END | | NOMINAL OVERALL LENGTH | 0.766 INCHES | | PITCH DIAMETER | 3.0625 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 8 | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | PERIPHERAL FACE, HUBLESS | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 147 | | TOOTH FORM | STANDARD |
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