Model: 179793-000

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp
Pitch Diameter
0.6875 inches
Teeth Quantity
44
Bore Style
Plain both ends
Outside Diameter
0.713 inches
Tooth Form
Stub
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.173 inches first end
Face Width
0.108 inches
Bore Diameter
0.094 inches both ends
Hub Style Designator
Split first end
Hub Diameter
0.124 inches first end
Clamping Surface Length
0.136 inches first end
Precision Classification
Quality number 9
Material
Aluminum alloy 2024 body
Material
Steel comp 303 hub
Material Specification
66 federal standard single material response hub and mil-s-7720 military specification single material response hub
Material Specification
Qq-a-225/6, t4 federal specification single material response body
Surface Treatment
Passivate hub
Surface Treatment Specification
Mil-f-14072 military specification single treatment response hub
Style Designator
Protruding hub
NSN
3020-00-278-5151
Part Number
179793-000
Description
Gear,antibacklash,spur
CAGE
81413

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 179793-000 NSN 3020-00-278-5151

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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