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FSC 3020 | Transmission Chain Sprockets Pulleys Gears
157D1-0721

Model: 157D1-0721

Helical Gear

Properties:

Body Style

Webbed, offset, solid

Attachment Method

Mounting hole

Teeth Quantity

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.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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:

SHC:

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