Model: 9712-56

Spur Antibacklash Gear

Properties:

Pitch Diameter
0.8750 inches
Teeth Quantity
105
Bore Style
Plain both ends
Outside Diameter
0.890 inches
Nominallength
0.291 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.025 inches second end
Distance Between Body Face And Protruding Hub End
0.179 inches first end
Face Width
0.062 inches
Bore Diameter
0.120 inches both ends
Hub Style Designator
Plain both ends
Material
Aluminum alloy 2024
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Protruding hubs
NSN
3020-01-203-8615
Part Number
9712-56
Description
Gear,antibacklash,spur
CAGE
00328

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 9712-56 NSN 3020-01-203-8615

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately

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