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National Stock Number:
3020-00-437-0309
Federal Supply Class:
3020
National Item Identification Number:
004370309
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:
| 11069732 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 3020004370309 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE | | Z7D85 | 00328 | DESIGNATRONICS INCORPORATED | | ABC20-85 | 23266 | SECS INC |
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Techincal Specification:
| ATTACHMENT METHOD | CLAMP | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | CLAMPING SURFACE NOMINAL LENGTH | 0.180 INCHES FIRST END | | FACE NOMINAL WIDTH | 0.104 INCHES | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CL 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | PITCH DIAMETER | 1.7698 INCHES MINIMUM AND 1.7708 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.221 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.811 INCHES | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 85 | | TOOTH FORM | STANDARD |
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