Product Details | SPUR ANTIBACKLASH GEAR

3020-00-981-7453 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.

Part Alternates: AB25080CT090, AB250-80CT090, 10790812, 1079081-2, 3020-00-981-7453, 00-981-7453, 3020009817453, 009817453

Mechanical Power Transmission Equipment | Gears, Pulleys, Sprockets, and Transmission Chain

Supply Group (FSG) NSN Assign. NIIN
30 00-981-7453

Drawings & Photos | NSN 3020-00-981-7453


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Technical Data | NSN 3020-00-981-7453

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 BODY STEEL COMP 303 HUB
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY MIL-S-7720,COMP 303 MIL SPEC SINGLE MATERIAL RESPONSE HUB
SURFACE TREATMENT ANODIZE BODY PASSIVATE HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB
TEETH QUANTITY 80
TOOTH FORM STANDARD
PRESSURE ANGLE 20.0000 DEGREES
STYLE DESIGNATOR 2 PROTRUDING HUB
PITCH DIAMETER 1.2500 INCHES NOMINAL
NOMINAL OVERALL LENGTH 0.438 INCHES
NOMINAL OUTSIDE DIAMETER 1.2812 INCHES
FACE NOMINAL WIDTH 0.125 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END 0.313 INCHES FIRST END
BORE STYLE 1 PLAIN BOTH ENDS
BORE NOMINAL DIAMETER 0.090 INCHES BOTH ENDS
HUB STYLE DESIGNATOR 4A 1 STEP FIRST END
END NOMINAL LENGTH 0.250 INCHES FIRST END
END NOMINAL DIAMETER 0.187 INCHES FIRST END
FIRST STEP NOMINAL LENGTH 0.063 INCHES FIRST END
FIRST STEP NOMINAL DIAMETER 0.375 INCHES FIRST END
ATTACHMENT METHOD CLAMP

Restrictions/Controls & Freight Information | NSN 3020-00-981-7453

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Category Code Description
No Freight Information