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National Stock Number: 3020-00-943-4620
Federal Supply Class: 3020
National Item Identification Number: 009434620
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:
714499-047 | 05869 | RAYTHEON COMPANY | P7-4-72 | 00141 | ROLLER BEARING CO OF AMERICA, INC |
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Techincal Specification:
BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | BORE STYLE | PLAIN BOTH ENDS | FACE NOMINAL WIDTH | 0.180 INCHES | HUB STYLE DESIGNATOR | PINNED FIRST END | HUB STYLE DESIGNATOR | THREADED SECOND END | HUB NOMINAL DIAMETER | 0.500 INCHES FIRST END | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL | MATERIAL | STEEL COMP 303S OR STEEL COMP 303SE OVERALL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.189 INCHES SECOND END | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.240 INCHES FIRST END | NOMINAL OUTSIDE DIAMETER | 2.312 INCHES | PITCH DIAMETER | 2.2500 INCHES NOMINAL | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | PRESSURE ANGLE | 20.0000 DEGREES | STYLE DESIGNATOR | PROTRUDING HUBS | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | PASSIVATE OVERALL | TEETH QUANTITY | 72 | TOOTH FORM | STANDARD |
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