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National Stock Number: 3020-01-022-6188
Federal Supply Class: 3020
National Item Identification Number: 010226188
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:
20180 | 14632 | DRS SIGNAL SOLUTIONS, INC. | 20180-12 | 14632 | DRS SIGNAL SOLUTIONS, INC. | AB150-50-250 | 01351 | SOUTHERN GEAR & MACHINE INC | ACC8-50 | 12444 | DESIGNATRONICS INC PERFECT GEAR AND INSTRUMENT DIV |
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Techincal Specification:
MATERIAL | ALUMINUM ALLOY 2024 BODY | | STEEL COMP 303 HUB | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY | | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB | SURFACE TREATMENT | ANODIZE BODY | | PASSIVATE HUB | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY | | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB | TEETH QUANTITY | 50 | TOOTH FORM | STANDARD | PRESSURE ANGLE | 20.0000 DEGREES | PRECISION CLASSIFICATION | QUALITY NUMBER 10 OR | | QUALITY NUMBER 11 | STYLE DESIGNATOR | PROTRUDING HUB | PITCH DIAMETER | 1.0412 INCHES NOMINAL | NOMINAL OUTSIDE DIAMETER | 1.083 INCHES | FACE NOMINAL WIDTH | 0.125 INCHES | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | BORE STYLE | PLAIN BOTH ENDS | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | HUB STYLE DESIGNATOR | PLAIN FIRST END | HUB NOMINAL DIAMETER | 0.375 INCHES FIRST END | ATTACHMENT METHOD | MOUNTING HOLE | MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH HUB, FIRST END | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH HUB, FIRST END | MOUNTING HOLE NOMINAL THREAD SIZE | 0.112 INCHES AXIALLY THROUGH HUB, FIRST END |
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