3020-00-398-0627, GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-00-398-0627

Federal Supply Class:
3020

National Item Identification Number:
003980627

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:

116167

88818

KEARFOTT CORPORATION

Techincal Specification:

END NOMINAL DIAMETER	0.031 INCHES BOTH ENDS
END NOMINAL LENGTH	0.036 INCHES SECOND END
END NOMINAL LENGTH	0.801 INCHES FIRST END
FACE NOMINAL WIDTH	0.042 INCHES
FIRST STEP NOMINAL DIAMETER	0.058 INCHES BOTH ENDS
FIRST STEP NOMINAL DIAMETER	0.094 INCHES FIRST END
FIRST STEP NOMINAL LENGTH	0.024 INCHES FIRST END
FIRST STEP NOMINAL LENGTH	0.031 INCHES SECOND END
HUB STYLE DESIGNATOR	2 STEPS BOTH ENDS
MATERIAL	COPPER ALLOY BODY
MATERIAL	STEEL CORROSION RESISTING HUB
MATERIAL	STEEL CORROSION RESISTING TEETH
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.780 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.856 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER	0.844 INCHES
PITCH DIAMETER	0.8125 INCHES NOMINAL
PRESSURE ANGLE	20.0000 DEGREES
SECOND STEP NOMINAL DIAMETER	0.262 INCHES FIRST END
SECOND STEP NOMINAL DIAMETER	0.193 INCHES SECOND END
SECOND STEP NOMINAL LENGTH	0.011 INCHES SECOND END
SECOND STEP NOMINAL LENGTH	0.031 INCHES FIRST END
STYLE DESIGNATOR	PROTRUDING HUBS
TEETH QUANTITY	52
TOOTH FORM	STANDARD

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