Model: 78509

Worm Wheel Gear

Properties:

Body Style
Webbed, offset, solid
Attachment Method
Mounting hole
Pitch Diameter
1.6820 inches
Teeth Quantity
30
Face Type
Concave
Bore Style
Plain both ends
Mounting Hole Type And Quantity
3 counterbored axially through body, first end
Outside Diameter
1.875 inches
Tooth Direction
Right
Throat Radius
0.625 inches
Mating Thread Lead Quantity
4
Pressure Angle
14.5000 degrees
Helix Angle
21.8000 degrees
Body Recess Depth
0.250 inches first end
Face Width
0.500 inches
Bore Diameter
0.500 inches both ends
Mounting Hole Diameter
0.348 inches axially through body, first end
Bolt Hole Circle Diameter
0.875 inches axially through body, first end
Material
Plastic phenol-formaldehyde
Style Designator
Hubless, recessed body
NSN
3020-00-448-3973
Part Number
78509
Description
Gear,worm Wheel
CAGE

A gear, cylindrical in form, with spiral teeth designed to mesh with the thread forms of a gear (1), worm. See also gear, antibacklash, worm wheel.

Part 78509 NSN 3020-00-448-3973

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05468
FIIG:
A27300
Concept No.:
1
App. Key:
AK
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
Q
LVL_B:
Q

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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