Model: 71185

Spur Antibacklash Gear

Special Features:

Internal splines, 21 teeth, 120 pitch dia, 0.154 minor dia, 0.186 in. Major dia, 0.0625 in. Lg, adjacent to second end counterbore

Properties:

Pitch Diameter
Between 0.9575 inches and 0.9582 inches
Teeth Quantity
92
Bore Style
W/counterbore both ends
Hardness Rating
25.0 rockwell c and 32.0 rockwell c
Hardness Rating
25.0 rockwell c and 32.0 rockwell c
Outside Diameter
0.978 inches
Nominallength
0.555 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.244 inches first end
Face Width
0.311 inches
Bore Diameter
0.187 inches both ends
Counterbore Depth
0.156 inches both ends
Counterbore Diameter
0.500 inches both ends
Hub Style Designator
1 step first end
End Length
0.167 inches first end
Precision Classification
Quality number 12
End Diameter
0.249 inches first end
First Step Length
0.077 inches first end
First Step Diameter
0.625 inches first end
Material
Steel comp 416
Material Specification
Qq-s-764 federal specification single material response
Surface Treatment
Passivate
Style Designator
Protruding hub
NSN
3020-00-146-1350
Part Number
71185
Description
Gear,antibacklash,spur
CAGE
03538

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 71185 NSN 3020-00-146-1350

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
60.0
WCC:
593
TCC:
Z
SHC:
Z
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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