5330-01-055-7642 RETAINER,PACKING Index 4820-01-055-7644 PARTS KIT,CHECK VALVE

National Stock Number:
3020-01-055-7643

Federal Supply Class:
3020

National Item Identification Number:
010557643

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.


Manufacturer Information:
90104482577RAYTHEON COMPANY
901044-1C00328DESIGNATRONICS INCORPORATED
901044-1C1MF53MARINO ENTERPRISES, INC.
901044-1C22371KOSMO GEARS
901044-1C53712WESTFIELD PRECISION PRODUCTS INC WEST COAST GEAR PRODUCTS DIV
901044-1C82577RAYTHEON COMPANY
9830009W53712WESTFIELD PRECISION PRODUCTS INC WEST COAST GEAR PRODUCTS DIV


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS
BORE NOMINAL DIAMETER0.312 INCHES SECOND END
BORE STYLEPLAIN BOTH ENDS
END NOMINAL DIAMETER0.312 INCHES FIRST END
END NOMINAL LENGTH0.141 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
FIRST STEP NOMINAL DIAMETER0.302 INCHES FIRST END
FIRST STEP NOMINAL LENGTH0.062 INCHES FIRST END
HUB STYLE DESIGNATOR2 STEPS FIRST END
HUB STYLE DESIGNATORPLAIN SECOND END
HUB NOMINAL DIAMETER2.750 INCHES BETWEEN BODY AND FLANGE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.044 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.282 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER2.781 INCHES
PITCH DIAMETER2.7500 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
SECOND STEP NOMINAL DIAMETER0.500 INCHES FIRST END
SECOND STEP NOMINAL LENGTH0.078 INCHES FIRST END
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY176
TOOTH FORMSTANDARD


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