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National Stock Number:
3020-00-451-2681
Federal Supply Class:
3020
National Item Identification Number:
004512681
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:
| 3020004512681 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | | 9322C3004 | 87557 | LOCKHEED CORP LOCKHEED ELECTRONICS CO INC | | AB550-96CT1873 | 01351 | SOUTHERN GEAR & MACHINE INC | | AB550-96CT1873 | 0CU17 | AEROSPACE GEAR INC | | 9322C3004 | 94117 | BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. | | AB550-96CT1873 | 9W957 | DYNACO GEARS INC |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 FIRST GEAR | | STEEL COMP 303 HUB | | ALUMINUM ALLOY 2024 SECOND GEAR | | STEEL CORROSION RESISTING SPRING | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR | | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB | | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR | | SURFACE TREATMENT | ANODIZE FIRST GEAR | | PASSIVATE HUB | | ANODIZE SECOND GEAR | | TEETH QUANTITY | 96 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 0.9990 INCHES MINIMUM AND | | 1.0000 INCHES MAXIMUM | | NOMINAL OUTSIDE DIAMETER | 1.098 INCHES | | FACE NOMINAL WIDTH | 0.125 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.313 INCHES FIRST END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.187 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | HUB NOMINAL DIAMETER | 0.250 INCHES FIRST END | | CLAMPING SURFACE NOMINAL LENGTH | 0.188 INCHES FIRST END | | ATTACHMENT METHOD | CLAMP |
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