Model: 31289J

Helical Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
2.3330 inches
Teeth Quantity
18
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Mounting Hole Thread Series Designator
Un axially through body, first end
Mounting Hole Thready Qty Per Inch (tpi)
20 axially through body, first end
Hardness Rating
20.0 rockwell c and 22.0 rockwell c
Mounting Hole Thread Size
0.250 inches axially through body, first end
Mounting Hole Type And Quantity
6 threaded axially through body, first end
Outside Diameter
2.531 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
14.5000 degrees
Helix Angle
39.5167 degrees
Face Width
0.969 inches
Bore Diameter
0.750 inches both ends
Keyway Width
0.156 inches both ends
Distance From Bore Center To Keyway Bottom
0.456 inches both ends
Bolt Hole Circle Diameter
1.563 inches axially through body, first end
Material
Steel comp 1030 or steel comp 1035
Material
Steel comp 1030 or steel comp 1035
Material Specification
66 federal standard all material responses
Style Designator
Hubless
NSN
3020-00-640-2713
Part Number
31289J
Description
Gear,helical
CAGE
56442

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 31289J NSN 3020-00-640-2713

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
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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