Model: 60878-2

Spur Antibacklash Gear

Properties:

Pitch Diameter
3.5156 inches
Teeth Quantity
225
Bore Style
Plain both ends
Backlash Designation
Grade d
Outside Diameter
3.546 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.250 inches first end
Face Width
0.125 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.563 inches first end
Precision Classification
Quality number 12
Material
Aluminum alloy 2024 body
Material
Steel comp 303s hub
Material
Steel comp 302 spring
Material Specification
Mil-s-7720 military standard single material response hub
Material Specification
Qq-a-250/4c federal specification single material response body or qq-a-225/6b federal specification single material response body
Material Specification
Qq-s-763 federal specification single material response spring
Surface Treatment
Anodize body
Surface Treatment
Passivate hub
Surface Treatment
Passivate spring
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response body
Surface Treatment Specification
Mil-f-14072, e300 military specification single treatment response hub
Surface Treatment Specification
Mil-f-14072, e300 military specification single treatment response spring
Style Designator
Protruding hub
NSN
3020-00-406-4783
Part Number
60878-2
Description
Gear,antibacklash,spur
CAGE
9Y580

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 60878-2 NSN 3020-00-406-4783

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

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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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