Model: 1812858

Spur Antibacklash Gear

Special Features:

Modified from sterling instrument p/n s9706a-z7e130ap with preload at 6 teeth and .0634 dia. Hole and bore as specified

Properties:

End Application
Transmitter unit assembly p/n 1981509; navigational systems
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
0.325 inches first end
Face Width
0.104 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.312 inches first end
Part Name Assigned By Controlling Agency
Gear, anti-backlash, 130 teeth
Material
Aluminum alloy 2024 first gear
Material
Aluminum alloy 2024 second gear
Material
Steel comp 303 hub
Material
Steel comp 302 spring
Surface Treatment
Anodize
Style Designator
Protruding hub
NSN
3020-01-486-6739
Part Number
1812858
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 1812858 NSN 3020-01-486-6739

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
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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