20178-2

Spur Antibacklash Gear

NSN 3020-00-477-1804

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
004771804

Product Features

Two threaded mtg holes located hub between hub end and gear face 90 degrees apart; unc thd series; mtg hole nom thd size 0.112 in.; 40 threads per in.

Product Technical Spec.

Attachment Method:
Mounting hole
Pitch Diameter:
0.9375 inches
Teeth Quantity:
60
Bore Style:
Plain both ends
Outside Diameter:
0.9688 inches
Nominallength:
0.375 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:
0.187 inches both ends
Hub Style Designator:
Pinned first end
Hub Diameter:
0.375 inches first end
Precision Classification:
Quality number 10 or quality number 11
Material:
Aluminum alloy body
Material:
Steel hub
Surface Treatment:
Anodize body
Surface Treatment:
Passivate hub
Style Designator:
Protruding hub
NSN:
3020-00-477-1804
Item Name:
Gear,antibacklash,spur
Cage Code:
14632

Cross Referenced Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
MAB250-60-1875
Cage Code:
01351
RNCC:
3
RNVC:
2
RNAAC:
AX
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
Cond. Code:
1
Status:
A

Part Materials

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

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Spur Antibacklash Gear"

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.

MOE Major Organizational Entities

Entity
DSOR
User:
BRAZIL Brazil
DSOR:
User:
SPAIN Spain
DSOR:
Import / Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Classification: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately


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