Spur Antibacklash Gear NSN 3020-00-212-9028

Item Description

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.

NSN: 3020-00-212-9028

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Features and Characteristics

Attachment Method

Clamp

Pitch Diameter

1.8437 inches

Teeth Quantity

118

Bore Style

Plain both ends

Outside Diameter

1.8750 inches

Tooth Form

Standard

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.313 inches first end

Face Width

0.125 inches

Bore Diameter

0.250 inches both ends

Hub Style Designator

Split first end

Hub Diameter

0.313 inches first end

Clamping Surface Length

0.250 inches first end

Precision Classification

Quality number 10

Material

Steel comp 303 hub

Material Specification

Qq-a-764 federal specification single material response hub

Surface Treatment

Passivate hub

Style Designator

Protruding hub

FSC

3020 Transmission Chain Sprockets Pulleys Gears

NIIN

002129028

NSN

3020002129028

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

AB250-118CT250

Cage Code:

01351

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 8483409000
NAICS: 333612
SITC: 74840
Description: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately
End Use (Code 21180):
Industrial machines, other

Q & A

Frequently asked questions for NSN 3020-00-212-9028

What are the manufacturers of nsn 3020002129028?

Southern Gear & Machine, Inc. (01351)

Does this nsn 3020002129028 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 3020002129028
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.

Does nsn 3020002129028 contain any precious metals?
Precious metal content is unknown.

Does nsn 3020002129028 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 3020002129028?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

26668

FIIG:

A27300

App. Key:

Cond. Code:

Status:

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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
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