Model: BL3897-2

Internal Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
4.0000 inches
Teeth Quantity
64
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unf axially through body, first end
Hardness Rating
34.0 rockwell c and 38.0 rockwell c
Mounting Hole Thread Size
0.1900 inches axially through body, first end
Mounting Hole Type And Quantity
3 plain axially through body, first end and 3 threaded axially through body, first end
Outside Diameter
4.3615 inches
Nominallength
4.0000 inches
Teeth Type
Spur
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.1870 inches first end
Face Width
3.8130 inches
Bore Diameter
3.0000 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
3.1868 inches first end
Mounting Hole Diameter
0.189 inches axially through body, first end
Bolt Hole Circle Diameter
3.6250 inches axially through body, first end
Material
Steel comp e4340
Material Specification
Mil-s-5000 military specification single material response
Style Designator
Solid back ring, protruding hub, recessed hub
NSN
3020-00-946-8228
Part Number
BL3897-2
Description
Gear,internal
CAGE
08484

A gear with teeth formed on the inner surface of a cylinder or cone.

Part BL3897-2 NSN 3020-00-946-8228

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05465
FIIG:
A27300
Concept No.:
1
App. Key:
AG
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:
--
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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