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National Stock Number: 3020-00-020-3920
Federal Supply Class: 3020
National Item Identification Number: 000203920
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:
3306-691 | 90073 | CMC ELECTRONICS INC |
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Techincal Specification:
MATERIAL | STEEL COMP 303 HUB | | STEEL TEETH | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TY 303,COND A CANCELLED FED SPEC 1ST MATERIAL RESPONSE HUB | | QQ-S-766,CL 302,COND A FED SPEC 2ND MATERIAL RESPONSE TEETH | SURFACE TREATMENT | PASSIVATE OVERALL | TEETH QUANTITY | 60 | PRESSURE ANGLE | 14.5000 DEGREES | STYLE DESIGNATOR | PROTRUDING HUBS | PITCH DIAMETER | 1.2500 INCHES NOMINAL | NOMINAL OUTSIDE DIAMETER | 1.2920 INCHES | FACE NOMINAL WIDTH | 0.062 INCHES | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.185 INCHES FIRST END | | 0.063 INCHES SECOND END | BORE STYLE | PLAIN BOTH ENDS | BORE NOMINAL DIAMETER | 0.0908 INCHES BOTH ENDS | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | 0.185 INCHES SECOND END | THE MANUFACTURERS DATA | | MANUFACTURERS CODE | 90073 | DESIGN CONTROL REFERENCE | 3306-691 |
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