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Worm Wheel Antibacklash Gear NSN 3020-01-598-9938

Item Description

An item having one fixed gear and one free gear, both having the same complement of worm wheel 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 3020-01-598-9938 NSN: 3020-01-598-9938

Features and Characteristics

End Application
Aiccmfd allignment fixture
Special Features
90.7kg compression load; 45kg tensile load; 500 in-lb cantilever load; 0.00025in axial run-out; 0.0005in radial run-out; 100 arc-second accuracy; 2.5kg in weight; 18: 1 gear ratio; 600 arc-second backlash
FSC
3020 Transmission Chain Sprockets Pulleys Gears
NIIN
015989938
NSN
3020015989938

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
A4818TS
Cage Code:
32697
Status:
A
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 3020-01-598-9938
What are the manufacturers of nsn 3020015989938?
Does this nsn 3020015989938 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3020015989938
An item having one fixed gear and one free gear, both having the same complement of worm wheel 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 3020015989938 contain any precious metals?
No precious metal content.
Does nsn 3020015989938 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3020015989938?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
26669
FIIG:
A27300
App. Key:
AD
Cond. Code:
1
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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