Model: 1263840-1

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp
Pitch Diameter
0.9380 inches
Teeth Quantity
75
Bore Style
Plain both ends
Outside Diameter
0.9630 inches
Nominallength
0.337 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.169 inches first end
Distance Between Body Face And Protruding Hub End
0.034 inches second end
Face Width
0.134 inches
Bore Diameter
0.090 inches both ends
Hub Style Designator
Plain second end
Hub Style Designator
Split first end
Hub Diameter
0.189 inches second end
Material
Aluminum alloy 2024 and aluminum alloy 1230
Material
Aluminum alloy 2024 and aluminum alloy 1230
Material Specification
Qq-a-250/5, alloy alclad 2024, t4 federal specification single material response
Surface Treatment
Anodize
Style Designator
Peripheral face, hubless
NSN
3020-00-610-3492
Part Number
1263840-1
Description
Gear,antibacklash,spur
CAGE
55972

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 1263840-1 NSN 3020-00-610-3492

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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