Model: 548-8749-003

Spur Antibacklash Gear

Properties:

Pitch Diameter
1.5833 inches
Teeth Quantity
76
Bore Style
Plain both ends
Outside Diameter
1.625 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.187 inches first end
Distance Between Body Face And Protruding Hub End
0.062 inches second end
Face Width
0.250 inches
Bore Diameter
0.190 inches both ends
Hub Style Designator
1 step first end
Hub Style Designator
Plain second end
Hub Diameter
0.312 inches second end
End Length
0.031 inches first end
End Diameter
0.312 inches first end
First Step Length
0.156 inches first end
First Step Diameter
0.500 inches first end
Material
Aluminum alloy 2024 hub
Material
Aluminum alloy 2024 teeth
Material
Aluminum alloy 2024 body
Material Specification
Qq-a-225/6, t4 federal specification single material response hub
Material Specification
Qq-a-225/6, t4 federal specification single material response body
Material Specification
Qq-a-225/6, t4 federal specification single material response teeth
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Protruding hubs
NSN
3020-00-987-5465
Part Number
548-8749-003
Description
Gear,antibacklash,spur
CAGE
13499

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 548-8749-003 NSN 3020-00-987-5465

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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