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FSC 3020 | Transmission Chain Sprockets Pulleys Gears
AB250-120-250/S

Model: AB250-120-250/S

Spur Antibacklash Gear

Properties:

Pitch Diameter

Between 1.8740 inches and 1.8750 inches

Teeth Quantity

120

Bore Style

Plain both ends

Outside Diameter

1.905 inches

Tooth Form

Standard

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.281 inches first end

Face Width

0.104 inches

Bore Diameter

0.250 inches both ends

Hub Style Designator

Pinned first end

Hub Diameter

0.500 inches first end

Precision Classification

Quality number 12

Material

Steel comp 303

Material Specification

Qq-s-764, type 303, cond a federal specification single material response

Surface Treatment

Passivate hub

Surface Treatment Specification

Qq-p-35, type 1 federal specification single treatment response

Style Designator

Protruding hub

NSN

3020-01-007-5471

Part Number

AB250-120-250/S

Description

Gear,antibacklash,spur

CAGE

01351

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

Part AB250-120-250/S NSN 3020-01-007-5471

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

26668

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:

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