Model: 802811-1

Worm Wheel Antibacklash Gear

Special Features:

Distance from end of hub to center of tapped hole 0.125 nom. In.

Properties:

Attachment Method
Mounting hole
Pitch Diameter
1.4583 inches
Teeth Quantity
70
Bore Style
Plain both ends
Mounting Hole Thready Qty Per Inch (tpi)
40 transversely through hub, first end
Mounting Hole Thread Size
0.112 inches transversely through hub, first end
Mounting Hole Type And Quantity
1 threaded transversely through hub, first end
Outside Diameter
1.7500 inches
Nominallength
0.6090 inches
Tooth Direction
Left
Mating Thread Lead Quantity
4
Pressure Angle
25.0000 degrees
Distance Between Body Face And Protruding Hub End
0.187 inches second end
Distance Between Body Face And Protruding Hub End
0.240 inches both ends
Face Width
0.188 inches
Bore Diameter
0.187 inches both ends
Hub Style Designator
Pinned first end
Hub Style Designator
Threaded second end
Hub Diameter
0.375 inches first end
Material
Copper alloy 464 body
Material
Steel comp 303 hub
Material
Stainless steel spring
Material Specification
Qq-b-637, alloy 464 federal specification single material response body
Material Specification
Qq-s-763, cl 303 federal specification single material response hub
Style Designator
Protruding hubs
NSN
3020-01-095-3597
Part Number
802811-1
Description
Gear,antibacklash,worm Wheel
CAGE
96214

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.

Part 802811-1 NSN 3020-01-095-3597

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26669
FIIG:
A27300
Concept No.:
App. Key:
AD
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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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