3020-01-132-3698 GEAR CLUSTER Index 6105-01-132-3700 ARMATURE,MOTOR

National Stock Number:
3020-01-132-3699

Federal Supply Class:
3020

National Item Identification Number:
011323699

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:
243-00195542NORTHROP GRUMMAN SYSTEMS CORPORATION
243-133-208495542NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.188 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
HUB STYLE DESIGNATORSPLIT FIRST END
HUB NOMINAL DIAMETER0.188 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.219 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.7916 INCHES
PITCH DIAMETER1.7500 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-8625 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
TEETH QUANTITY84
TOOTH FORMSTANDARD


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