Model: 285178B

Helical Gear

Special Features:

With 0.316 in. Wide by 0.500 in. Deep slot in 1st end hub

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
1.7880 inches
Teeth Quantity
14
Bore Style
Partial first end
Mounting Hole Type And Quantity
1 plain axially through hub, first end
Outside Diameter
1.968 inches
Nominallength
3.250 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
45.0000 degrees
Distance Between Body Face And Protruding Hub End
1.500 inches second end
Distance Between Body Face And Protruding Hub End
1.750 inches first end
Face Width
0.625 inches
Bore Diameter
0.623 inches both ends
Hub Style Designator
1 groove first end
Hub Style Designator
Plain second end
Hub Diameter
1.313 inches second end
End Diameter
1.859 inches first end
First Groove Width
0.875 inches first end
First Groove Diameter
1.343 inches first end
Distance From End To First Groove
0.250 inches first end
Mounting Hole Diameter
0.192 inches axially through hub, first end
Material
Steel
Style Designator
Protruding hubs
NSN
3020-00-718-4815
Part Number
285178B
Description
Gear,helical
CAGE
1ML14

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 285178B NSN 3020-00-718-4815

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:
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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