Model: P17-3-144

Spur Antibacklash Gear

Properties:

End Application
Wsr-74c radar, lwr
Pitch Diameter
Between 2.2489 inches and 2.2499 inches
Teeth Quantity
144
Backlash Designation
Grade e
Mounting Hole Type And Quantity
1 plain transversely through hub, first end
Nominallength
0.385 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.281 inches first end
Face Width
0.104 inches
Hub Diameter
0.500 inches first end
Precision Classification
Quality number 10
Material
Steel comp 303
Material Specification
Qq-s-764, type 303, cond a federal specification single material response
Surface Treatment
Passivate hub
Surface Treatment Specification
Qq-p-35, type 1 federal specification single treatment response
Style Designator
Protruding hub
NSN
3020-01-084-1576
Part Number
P17-3-144
Description
Gear,antibacklash,spur
CAGE
00141

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 P17-3-144 NSN 3020-01-084-1576

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

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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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