Model: 4R4-1

Helical Gear

Special Features:

Xteeth lead 18.6557 in., teeth chamfered both side, additional spline, helical involute spline, rh helix, 16/32 in.Nom pitch dia, helix angle 13 degrees 36 min 28 sec, lead 18.6557 in., pin diameter 0.030 in., 1.3341 in.Min, 1.3359 in.Max between pins

Properties:

Body Style
Plain, solid
Spline Quantity
23 both ends
Pitch Diameter
3.4280 inches
Teeth Quantity
24
Bore Style
Involute spline both ends
Spline Pitch Diameter
1.4375 inches both ends
Outside Diameter
3.649 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
30.0000 degrees
Distance Between Body Face And Protruding Hub End
0.188 inches both ends
Face Width
0.625 inches
Bore Diameter
1.510 inches both ends
Hub Style Designator
Plain both ends
Hub Diameter
2.000 inches first end
Hub Diameter
2.000 inches second end
Material
Steel comp 8620
Material Specification
66 federal standard single material response
Style Designator
Protruding hubs
NSN
3020-00-801-5008
Part Number
4R4-1
Description
Gear,helical
CAGE
08302

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 4R4-1 NSN 3020-00-801-5008

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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