4820-01-379-2117 VALVE,ROTARY,SELECTOR Index 4820-01-379-2119 VALVE,CHECK

National Stock Number:
3020-01-379-2118

Federal Supply Class:
3020

National Item Identification Number:
013792118

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:
21105954953711NAVAL SEA SYSTEMS COMMAND
561-6404325-15653711NAVAL SEA SYSTEMS COMMAND
P23-1-2800141ROLLER BEARING CO OF AMERICA, INC
640432553711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
FACE NOMINAL WIDTH0.187 INCHES
NOMINAL OUTSIDE DIAMETER1.250 INCHES
PITCH DIAMETER1.1666 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
TEETH QUANTITY28


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