Model: 8171740

Spur Antibacklash Gear

Properties:

Teeth Quantity
63
Bore Style
Plain both ends
Hardness Rating
25.0 rockwell c hub
Tooth Form
Standard
Pressure Angle
14.5000 degrees
Bore Diameter
0.750 inches both ends
Precision Classification
Quality number 8 or quality number 12
Material
Aluminum alloy 2024 body
Material
Steel hub
Material Specification
Qq-a-225/6 federal specification single material response body
Material Specification
Qq-s-763, cl 6, ta federal specification single material response hub
Surface Treatment
Passivate hub
Surface Treatment Specification
Mil-std-171, 5.4 military standard single treatment response hub
Style Designator
Protruding hubs
NSN
3020-00-563-3835
Part Number
8171740
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 8171740 NSN 3020-00-563-3835

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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