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National Stock Number:
3020-00-542-4954
Federal Supply Class:
3020
National Item Identification Number:
005424954
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:
| 9010900 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| BACKLASH DESIGNATION | GRADE C | | BORE STYLE | PLAIN FIRST END | | BORE NOMINAL DIAMETER | 0.563 INCHES FIRST END | | FACE NOMINAL WIDTH | 0.187 INCHES | | HUB NOMINAL DIAMETER | 0.933 INCHES FIRST END | | HUB STYLE DESIGNATOR | PLAIN FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/4,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.219 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.914 INCHES | | NOMINAL OVERALL LENGTH | 0.406 INCHES | | PITCH DIAMETER | 1.8750 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 8 OR QUALITY NUMBER 12 | | PRESSURE ANGLE | 14.5000 DEGREES | | SPECIAL FEATURES | COUNTERBORE SECOND END,0.703 IN. DIA; 0.188 IN. DEEP | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE OVERALL | | TEETH QUANTITY | 90 | | TOOTH FORM | STANDARD |
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