Model: 1981846 REV D ITEM 17

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp
End Application
Aft steering
Pitch Diameter
2.0313 inches
Teeth Quantity
130
Bore Style
Plain both ends
Outside Diameter
2.063 inches
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.281 inches first end
Face Width
0.104 inches
Bore Diameter
0.125 inches both ends
Hub Style Designator
Split first end
Hub Diameter
0.188 inches first end
Part Name Assigned By Controlling Agency
Anti-backlash gear
Material
Aluminum alloy body
Style Designator
Protruding hub
NSN
3020-01-513-7986
Part Number
1981846 REV D ITEM 17
Description
Gear,antibacklash,spur
CAGE
03956

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 1981846 REV D ITEM 17 NSN 3020-01-513-7986

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:
A
ESD:
A
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
121870
UFC:
64910
LTL:
77.5
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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