Model: 4B7785

Helical Gear

Special Features:

Timing mark letter c on teeth 134 degrees 59min 53 secccw from timing mark letter m between teeth oncenter line of keyway on hub end

Properties:

Body Style
Plain, solid
Pitch Diameter
3.1115 inches
Teeth Quantity
28
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
22.8 rockwell c and 29.9 rockwell c
Outside Diameter
3.309 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
25.8581 degrees
Distance Between Body Face And Protruding Hub End
0.248 inches first end
Face Width
0.625 inches
Bore Diameter
1.499 inches both ends
Keyway Width
0.189 inches both ends
Distance From Bore Center To Keyway Bottom
0.847 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
2.250 inches first end
Material
Steel
Material Specification
Fed standard 66 federal standard single material response
Style Designator
Protruding hub
NSN
3020-00-200-2050
Part Number
4B7785
Description
Gear,helical
CAGE
11083

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 4B7785 NSN 3020-00-200-2050

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:
SX
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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