3020-01-348-1588, GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-01-348-1588

Federal Supply Class:
3020

National Item Identification Number:
013481588

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:

S9712A-Z3H090X-P	00328	DESIGNATRONICS INCORPORATED
Z3H090X-P1	00328	DESIGNATRONICS INCORPORATED

Techincal Specification:

BORE NOMINAL DIAMETER	0.120 INCHES FIRST END
BORE STYLE	PLAIN BOTH ENDS
END NOMINAL DIAMETER	0.187 INCHES FIRST END
END NOMINAL LENGTH	0.180 INCHES FIRST END
FACE NOMINAL WIDTH	0.104 INCHES
FIRST STEP NOMINAL DIAMETER	0.495 INCHES FIRST END
FIRST STEP NOMINAL LENGTH	0.041 INCHES FIRST END
HUB STYLE DESIGNATOR	1 STEP FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE FIRST GEAR
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE HUB
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR
MATERIAL	STEEL COMP 303 FIRST GEAR
MATERIAL	STEEL COMP 303 HUB
MATERIAL	STEEL COMP 303 SECOND GEAR
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.221 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER	0.958 INCHES
PITCH DIAMETER	0.9375 INCHES NOMINAL
PRESSURE ANGLE	20.0000 DEGREES
SPECIAL FEATURES	HUB HAS SPLIT 0.180 IN. FROM END
STYLE DESIGNATOR	PROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FIRST GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
SURFACE TREATMENT	PASSIVATE FIRST GEAR
SURFACE TREATMENT	PASSIVATE HUB
SURFACE TREATMENT	PASSIVATE SECOND GEAR
TEETH QUANTITY	90
TOOTH FORM	STANDARD

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