Model: 7521071

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp
Pitch Diameter
0.7500 inches
Teeth Quantity
72
Bore Style
Plain both ends
Outside Diameter
0.771 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.203 inches first end
Distance Between Body Face And Protruding Hub End
0.050 inches second end
Face Width
0.104 inches
Bore Diameter
0.125 inches both ends
Hub Style Designator
1 groove second end
Hub Style Designator
Split first end
Hub Diameter
0.183 inches first end
Hub Diameter
0.312 inches second end
Clamping Surface Length
0.172 inches first end
Precision Classification
Quality number 10
First Groove Width
0.029 inches second end
First Groove Diameter
0.290 inches second end
Distance From End To First Groove
0.021 inches second end
Material
Steel comp 303
Material Specification
Qq-s-764, type 303, cond a federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-std-171, finish no. 5.4.1 military specification single treatment response
Style Designator
Protruding hubs
Furnished Items And Quantity
1 retaining ring and 1 stop pin
NSN
3020-00-368-8237
Part Number
7521071
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 7521071 NSN 3020-00-368-8237

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

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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