Model: 680845-1

Spur Antibacklash Gear

Properties:

Attachment Method
Clamp
Pitch Diameter
Between 1.6657 inches and 1.6667 inches
Teeth Quantity
200
Bore Style
Plain both ends
Outside Diameter
1.6823 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.064 inches second end
Distance Between Body Face And Protruding Hub End
0.140 inches first end
Face Width
0.096 inches
Bore Diameter
0.1202 inches both ends
Hub Style Designator
1 groove second end
Hub Style Designator
Split first end
Hub Diameter
0.1815 inches first end
Clamping Surface Length
0.140 inches first end
Precision Classification
Quality number 10
End Diameter
0.2495 inches second end
First Groove Width
0.0300 inches second end
First Groove Diameter
0.2295 inches second end
Distance From End To First Groove
0.0340 inches second end
Material
Aluminum alloy 6061
Material Specification
Qq-a-225/8, t651 federal specification single material response
Style Designator
Protruding hubs
NSN
3020-00-485-6156
Part Number
680845-1
Description
Gear,antibacklash,spur
CAGE
06481

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 680845-1 NSN 3020-00-485-6156

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
133300
UFC:
63220
LTL:
RATING VARIABLE
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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