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Spur Antibacklash Gear

Model / MPN: 9176946 | NSN: 3020-00-439-8365
ITAR Registered seal

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.

Product Details
NATO Stock Number
3020-00-439-8365
Sold in multiples of
1 EA
DEMIL
NO
Attachment Method
Mounting hole
Pitch Diameter
2.7776 inches
Teeth Quantity
200
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc transversely through hub, first end
Mounting Hole Thread Size
0.138 inches transversely through hub, first end
Mounting Hole Type And Quantity
2 threaded transversely through hub, first end
Outside Diameter
2.806 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.224 inches second end
Distance Between Body Face And Protruding Hub End
0.281 inches first end
Face Width
0.104 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Plain first end
Hub Style Designator
Threaded second end
Hub Diameter
0.500 inches first end
Precision Classification
Quality number 10
Material
Aluminum alloy 2024 first gear
Material
Aluminum alloy 2024 second gear
Material
Steel comp 303 hub
Material
Steel comp 303 spring
Material Specification
Qq-a-225/6 federal specification single material response first gear
Material Specification
Qq-a-225/6 federal specification single material response second gear
Material Specification
Qq-s-764 federal specification single material response hub
Material Specification
Qq-s-764 federal specification single material response spring
Surface Treatment
Anodize first gear
Surface Treatment
Anodize second gear
Surface Treatment
Passivate hub
Surface Treatment
Passivate spring
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response first gear
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response second gear
Surface Treatment Specification
Qq-p-35, type ii federal specification single treatment response hub
Surface Treatment Specification
Qq-p-35, type ii federal specification single treatment response spring
Style Designator
Protruding hubs
Furnished Items And Quantity
2 setscrew

Pricing and Availability

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9176946 Cross Reference
  • P4-5-200
  • 9176947