4820-00-960-9311 VALVE,GATE Index 3020-00-960-9313 GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-00-960-9312

Federal Supply Class:
3020

National Item Identification Number:
009609312

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:
MP75-2500A1361PQF4CAE USA INC.
MP75-2500A13636378RAYTHEON TECHNICAL SERVICES COMPANY


Techincal Specification:
BACKLASH DESIGNATIONGRADE C
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.104 INCHES
HUB NOMINAL DIAMETER0.688 INCHES SECOND END
HUB NOMINAL DIAMETER0.438 INCHES FIRST END
HUB STYLE DESIGNATORPINNED FIRST END
HUB STYLE DESIGNATORPLAIN SECOND END
MATERIALALUMINUM ALLOY 2024 OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.046 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.287 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER2.1562 INCHES
PITCH DIAMETER2.1250 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
TEETH QUANTITY136
TOOTH FORMSTANDARD


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