3020-00-398-0627 GEAR,ANTIBACKLASH,SPUR Index 6605-00-398-0631 DISC,INDICATOR GYRO

National Stock Number:
3020-00-398-0628

Federal Supply Class:
3020

National Item Identification Number:
003980628

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:
11617388818KEARFOTT CORPORATION
SKDN0-1021188818KEARFOTT CORPORATION


Techincal Specification:
BORE NOMINAL DIAMETER0.0313 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
END NOMINAL DIAMETER0.0598 INCHES FIRST END
END NOMINAL DIAMETER0.219 INCHES SECOND END
END NOMINAL LENGTH0.072 INCHES SECOND END
END NOMINAL LENGTH0.241 INCHES FIRST END
FACE NOMINAL WIDTH0.040 INCHES
FIRST STEP NOMINAL DIAMETER0.1259 INCHES SECOND END
FIRST STEP NOMINAL DIAMETER0.100 INCHES FIRST END
FIRST STEP NOMINAL LENGTH0.027 INCHES SECOND END
FIRST STEP NOMINAL LENGTH0.219 INCHES FIRST END
HUB STYLE DESIGNATOR1 STEP SECOND END
HUB STYLE DESIGNATOR2 STEPS FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION66,SAE 51416 FED STD SINGLE MATERIAL RESPONSE HUB
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-611,COMP B FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOPPER ALLOY BODY
MATERIALSTEEL COMP 416 HUB
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.099 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.486 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.8437 INCHES
SPECIAL FEATURESBORE IS STEPPED,FIRST END FIRST STEP 0.035 INCHES DIAMETER,0.257 INCHES LENGTH,SECOND STEP 0.55 INCHES DIAMETER,0.311 INCHES LENGTH
PITCH DIAMETER0.8125 INCHES NOMINAL
PRESSURE ANGLE14.5000 DEGREES
SECOND STEP NOMINAL DIAMETER0.1259 INCHES FIRST END
SECOND STEP NOMINAL LENGTH0.026 INCHES FIRST END
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY52
TOOTH FORMSTANDARD


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