Model: AB250-76-1200P0002

Spur Antibacklash Gear

Properties:

Pitch Diameter
1.1871 inches
Teeth Quantity
76
Bore Style
Plain both ends
Outside Diameter
1.217 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.250 inches first end
Face Width
0.125 inches
Bore Diameter
0.120 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.375 inches first end
Precision Classification
Quality number 12
Material
Aluminum alloy 2024 body
Material
Steel hub
Material Specification
Qq-a-225/6, t4 federal specification single material response body
Surface Treatment
Anodize body
Surface Treatment
Passivate hub
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response body
Surface Treatment Specification
Mil-f-14072, finish e300 military specification single treatment response hub
Style Designator
Protruding hub
NSN
3020-00-937-4977
Part Number
AB250-76-1200P0002
Description
Gear,antibacklash,spur
CAGE
01351

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 AB250-76-1200P0002 NSN 3020-00-937-4977

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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