Model: 2-300-70072

Spur Antibacklash Gear

Properties:

Attachment Method
Mounting hole
Pitch Diameter
0.6660 inches
Teeth Quantity
80
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unf transversely through hub, first end
Mounting Hole Thready Qty Per Inch (tpi)
80 transversely through hub, first end
Mounting Hole Thread Size
0.060 inches transversely through hub, first end
Mounting Hole Type And Quantity
1 threaded transversely through hub, first end
Outside Diameter
0.6830 inches
Nominallength
0.218 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Face Width
0.093 inches
Bore Diameter
0.101 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.250 inches first end
Material
Steel comp 303
Material Specification
Qq-s-763, class303 federal specification single material response
Surface Treatment
Passivate
Style Designator
Protruding hub
NSN
3020-00-907-8580
Part Number
2-300-70072
Description
Gear,antibacklash,spur
CAGE
1K426

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 2-300-70072 NSN 3020-00-907-8580

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:
A
ESD:
ESD:
MMAC:
NT
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197337
UFC:
96690
LTL:
92.5
LCL:
92.5
WCC:
593
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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