Model: 1B7112

Helical Gear

Special Features:

3800 psi min tensile strength, 0.094 in. By 30 degrees chamfer @on bore 1st end, @keyway 7 degrees 26 @min 15 sec cw from center line of gear spoke to centerline of keyway, timing punch mark on center of space on opposite side from turned down hub

Properties:

Body Style
Spoked
Pitch Diameter
7.0000 inches
Teeth Quantity
54
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
197.0 brinell standard and 235.0 brinell standard
Outside Diameter
7.198 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
14.5000 degrees
Helix Angle
39.5167 degrees
Face Width
1.498 inches
Bore Diameter
1.250 inches both ends
Keyway Width
0.251 inches both ends
Distance From Bore Center To Keyway Bottom
0.746 inches both ends
Hub Style Designator
1 step first end
Hub Style Designator
Plain both ends
Hub Diameter
2.000 inches second end
End Length
0.077 inches first end
End Diameter
1.937 inches first end
First Step Length
0.236 inches first end
First Step Diameter
3.000 inches first end
Material
Steel
Style Designator
Flush hub
NSN
3020-00-517-1118
Part Number
1B7112
Description
Gear,helical
CAGE
95201

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 1B7112 NSN 3020-00-517-1118

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05464
FIIG:
A27300
Concept No.:
1
App. Key:
AF
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

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:
9
ACC:
Construction Materials

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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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