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National Stock Number:
3020-00-201-8525
Federal Supply Class:
3020
National Item Identification Number:
002018525
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:
| 10677143 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | AP72ZW130 | 29440 | W. M. BERG INC | | Z6F130P1 | 00328 | DESIGNATRONICS INCORPORATED |
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.104 INCHES | | HUB NOMINAL DIAMETER | 0.437 INCHES FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB, FIRST END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.221 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.833 INCHES | | NOMINAL OVERALL LENGTH | 0.325 INCHES | | PITCH DIAMETER | 1.8046 INCHES MINIMUM AND 1.8056 INCHES MAXIMUM | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 OR QUALITY NUMBER 11 | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | TEETH QUANTITY | 130 | | TOOTH FORM | STANDARD |
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