Model: 170720-6

Spur Antibacklash Gear

Special Features:

One plain hole 0.064 in. Diameter through body on 0.600 in. Bolt circledia

Properties:

Attachment Method
Clamp
Pitch Diameter
1.6458 inches
Teeth Quantity
79
Bore Style
Plain both ends
Backlash Designation
Grade c
Outside Diameter
1.6875 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.313 inches first end
Face Width
0.125 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Split first end
Hub Diameter
0.313 inches first end
Clamping Surface Length
0.250 inches first end
Precision Classification
Quality number 10
Material
Aluminum alloy body
Material
Aluminum alloy teeth
Material
Stainless steel hub
Surface Treatment
Anodize body
Surface Treatment
Anodize teeth
Surface Treatment
Passivate hub
Surface Treatment Specification
Mil-a-8625 military specification single treatment response body
Surface Treatment Specification
Mil-a-8625 military specification single treatment response teeth
Style Designator
Protruding hub
NSN
3020-00-229-9499
Part Number
170720-6
Description
Gear,antibacklash,spur
CAGE
24930

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 170720-6 NSN 3020-00-229-9499

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:
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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