Model: 807551-1056

Spur Antibacklash Gear

Properties:

Pitch Diameter
Between 0.7768 inches and 0.7778 inches
Teeth Quantity
56
Bore Style
Plain both ends
Outside Diameter
0.805 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.221 inches first end
Face Width
0.104 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.437 inches first end
Precision Classification
Quality number 12
Material
Steel comp 303 body
Material
Steel comp 303 hub
Material
Steel comp 302 spring
Material Specification
Astm-a-484 assn standard single material response body
Material Specification
Astm-a-484 assn standard single material response hub
Material Specification
Qq-w-423 federal specification single material response spring
Surface Treatment
Cadmium spring
Surface Treatment
Passivate body
Surface Treatment
Passivate hub
Surface Treatment Specification
Qq-p-35, type i federal specification single treatment response hub
Surface Treatment Specification
Qq-p-35, type ii federal specification single treatment response body
Surface Treatment Specification
Qq-p-416, type ii, class 2 federal specification single treatment response spring
Style Designator
Protruding hub
NSN
3020-01-256-5377
Part Number
807551-1056
Description
Gear,antibacklash,spur
CAGE
96214

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 807551-1056 NSN 3020-01-256-5377

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
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:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
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

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