Model: 20178-3
Spur Antibacklash GearSpecial Features:
Two threaded mtg holes located hub between hub end and gear face 90 degrees apart; unc thread series; mtg hole nom thd size 0.112 in.; 40 thds per in.
Properties:
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 20178-3 NSN 3020-00-455-1225
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPricing & Availability Check
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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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