3020-01-328-1846, GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-01-328-1846

Federal Supply Class:
3020

National Item Identification Number:
013281846

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:

1858751	03956	NORTHROP GRUMMAN SYSTEMS CORPORATION
MAB150-SS32CT/.1873/P2	01351	SOUTHERN GEAR & MACHINE INC
PL1977611	03956	NORTHROP GRUMMAN SYSTEMS CORPORATION
PL1977611 FIND NO 12	03956	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

BORE STYLE	PLAIN BOTH ENDS
BORE NOMINAL DIAMETER	0.187 INCHES BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH	0.250 INCHES FIRST END
FACE NOMINAL WIDTH	0.125 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A581,COND A ASSN STD SINGLE MATERIAL RESPONSE HUB
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE FIRST GEAR
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE SPRING
HUB NOMINAL DIAMETER	0.250 INCHES FIRST END
HUB STYLE DESIGNATOR	SPLIT FIRST END
III MATERIAL	STEEL COMP 302 SPRING
III MATERIAL	STEEL COMP 303 HUB
III MATERIAL	STEEL COMP 303 FIRST GEAR
III MATERIAL	STEEL COMP 303 SECOND GEAR
PITCH DIAMETER	0.6666 INCHES NOMINAL
PRECISION CLASSIFICATION	QUALITY NUMBER 12
PRESSURE ANGLE	20.0000 DEGREES
PROPRIETARY CHARACTERISTICS	PACS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.312 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER	0.708 INCHES
STYLE DESIGNATOR	PROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE FIRST GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE SPRING
SURFACE TREATMENT	PASSIVATE FIRST GEAR
SURFACE TREATMENT	PASSIVATE HUB
SURFACE TREATMENT	PASSIVATE SECOND GEAR
SURFACE TREATMENT	PASSIVATE SPRING
TEETH QUANTITY	32
TOOTH FORM	STANDARD

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