Model: 25218

Gear Cluster

Special Features:

1st gear is antibacklash type

Properties:

Attachment Method
Mounting hole
Bore Style
Plain both ends
Design Type
Spur first gear
Design Type
Spur second gear
Construction
Assembled
Thread Size
0.086 inches both ends
Outside Diameter
1.415 inches first gear
Outside Diameter
0.582 inches second gear
Nominallength
0.500 inches
Hub Length
0.0210 inches second end
Hub Length
0.069 inches between first and second gear
Hub Length
0.187 inches first end
Bore Diameter
0.125 inches both ends
Hub Style Designator
Plain first end
Hub Style Designator
Plain second end
Hub Diameter
0.3120 inches between first and second gear
Hub Diameter
0.3540 inches between second and third gear
Material
Aluminum alloy 2024 first gear
Material
Steel comp 303 second gear
Material
Steel comp 303 shaft/hub
Material Specification
Qq-a-250/4 federal specification single material response first gear
Material Specification
Qq-s-764 federal specification single material response second gear
Material Specification
Qq-s-764 federal specification single material response shaft/hub
Thread Series Designator
Unc both ends
NSN
3020-00-141-3724
Part Number
25218
Description
Gear Cluster
CAGE
01351

A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see gearshaft (as modified). Excludes gear subassembly, speed decreaser.

Part 25218 NSN 3020-00-141-3724

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36636
FIIG:
A270A0
Concept No.:
App. Key:
A
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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