Model: 81125S41-21598ALT1PC3

Helical Gear

Special Features:

Outside diameter 8.873min. 8.875max. In.; bore provision included; bore length 0.438 in.; face width 1.745min. 1.755max. In.; distance from first end hub end to face of gear 0.3075min. 0.3175max. In.; depth from second end face of teeth to face of bore 0.3075min. 0.3175max. In.; web location offset from gear teeth centerline; style webbed, protruding hub/recessed face; circular pitch 0.3927 in.

Properties:

Body Style
Webbed, solid
Attachment Method
Mounting hole
Pitch Diameter
8.6250 inches
Teeth Quantity
69
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unf axially through body, second end
Mounting Hole Thready Qty Per Inch (tpi)
24 axially through body, second end
Hardness Rating
10.0 rockwell c and 20.0 rockwell c
Mounting Hole Thread Size
0.375 inches axially through body, second end
Mounting Hole Type And Quantity
4 threaded axially through body, second end
Mounting Hole Type And Quantity
4 plain axially through body, first end
Nominallength
2.062 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
14.5000 degrees
Helix Angle
25.81635 degrees
Bore Diameter
4.375 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
6.750 inches first end
Mounting Hole Diameter
0.500 inches axially through body, first end
Bolt Hole Circle Diameter
5.250 inches axially through body, first end
Bolt Hole Circle Diameter
5.250 inches axially through body, second end
Material
Steel
Material Specification
Mil-s-890, class b military specification single material response
NSN
3020-00-293-4024
Part Number
81125S41-21598ALT1PC3
Description
Gear,helical
CAGE
80064

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 81125S41-21598ALT1PC3 NSN 3020-00-293-4024

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05464
FIIG:
A27300
Concept No.:
1
App. Key:
AF
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:
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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