3020-00-971-5609 GEAR,SPUR Index 5840-00-971-5612 COMPARATOR,SAW TOOT

National Stock Number:
3020-00-971-5611

Federal Supply Class:
3020

National Item Identification Number:
009715611

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:
10311224930L3HARRIS TECHNOLOGIES, INC


Techincal Specification:
MATERIALALUMINUM ALLOY 2024 FIRST GEAR
STEEL COMP 303 HUB
ALUMINUM ALLOY 2024 SECOND GEAR
STEEL CORROSION RESISTING SPRING
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR
MIL-S-7720 FED SPEC SINGLE MATERIAL RESPONSE HUB
QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR
SURFACE TREATMENTANODIZE FIRST GEAR
PASSIVATE HUB
ANODIZE SECOND GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR
MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB
MIL-A-8625,TYPE1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
TEETH QUANTITY184
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER2.8750 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER2.9062 INCHES
FACE NOMINAL WIDTH0.125 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.313 INCHES FIRST END
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.187 INCHES BOTH ENDS
HUB STYLE DESIGNATORSPLIT FIRST END
HUB NOMINAL DIAMETER0.250 INCHES FIRST END
CLAMPING SURFACE NOMINAL LENGTH0.250 INCHES FIRST END
ATTACHMENT METHODCLAMP


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