Model: 157D1-0721

Helical Gear

Properties:

Body Style
Webbed, offset, solid
Attachment Method
Mounting hole
Teeth Quantity
72
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Features Provided
Casehardened
Mounting Hole Thread Series Designator
Unc axially through body, first end
Mounting Hole Thread Size
0.375 inches axially through body, first end
Mounting Hole Type And Quantity
2 threaded axially through body, first end
Outside Diameter
8.8750 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
35.0000 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Distance Between Body Face And Recessed Hub End
0.125 inches second end
Face Width
1.375 inches
Bore Diameter
1.375 inches both ends
Keyway Width
0.250 inches both ends
Distance From Bore Center To Keyway Bottom
0.813 inches both ends
Hub Style Designator
1 step second end
Hub Style Designator
Plain first end
Hub Diameter
2.766 inches first end
End Length
0.563 inches second end
End Diameter
2.250 inches second end
First Step Length
0.094 inches second end
First Step Diameter
3.3125 inches second end
Bolt Hole Circle Diameter
4.750 inches axially through body, first end
Material
Steel
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-711-8514
Part Number
157D1-0721
Description
Gear,helical
CAGE
75377

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 157D1-0721 NSN 3020-00-711-8514

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:
17.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
LVL_B:

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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