Model: 8172333

Spur Antibacklash Gear

Properties:

Pitch Diameter
3.2917 inches
Teeth Quantity
158
Bore Style
Plain both ends
Backlash Designation
Grade c
Hardness Rating
20.0 rockwell c and 30.0 rockwell c
Outside Diameter
3.331 inches
Tooth Form
Standard
Pressure Angle
14.5000 degrees
Face Width
0.250 inches
Bore Diameter
0.688 inches both ends
Precision Classification
Quality number 10 or quality number 8
Material
Steel
Material Specification
Qq-s-763, class 6, type a federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-std-171, finish no. 5.4 military specification single treatment response
Style Designator
Hubless
NSN
3020-00-568-8333
Part Number
8172333
Description
Gear,antibacklash,spur
CAGE
18876

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 8172333 NSN 3020-00-568-8333

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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