Model: 478-28A

Flexible Shaft Coupling

Properties:

Counterbore Diameter
3.7500 inches first end
Counterbore Diameter
3.6250 inches second end
Counterbore Depth
0.3750 inches second end
Counterbore Depth
0.9380 inches first end
Overall Length
10.312 inches
Outside Diameter
7.625 inches
Taper Minor Diameter
2.4062 inches first end
Keyway Width
0.625 inches second end
Keyway Width
0.750 inches first end
Keyway Depth
0.2810 inches first end
Keyway Depth
0.3440 inches second end
Thread Size Designator
1/2-13 both ends
Bore Diameter
2.6240 inches both ends and 2.6250 inches both ends
Bore Length
4.8120 inches second end
Bore Length
5.4380 inches first end
Bore Shape
Straight second end
Bore Shape
Tapered first end
Design Type
Silent chain
Keying Facility Quantity
1 both ends
Keying Facility Type
Keyway first end
Keying Facility Type
Keyway second end
Securing Method
Threaded hole second end
Threaded Hole Quantity
1 both ends
Threaded Hole Location
Both ends: located on top of key on straight bore end, 2-3/4 in. From end of hub
Features Provided
Keyway and exposed coupling bolt type and chain cover
Taper Largest Diameter
2.8740 inches first end and 2.8750 inches first end
NSN
3010-00-517-1845
Part Number
478-28A
Description
Coupling,shaft,flexible
CAGE

A device for connecting the ends of two shafts so that rotary motion of one shaft is transmitted to the other shaft. It is constructed to allow for slight misalignment of shafts both linear and angular.

Part 478-28A NSN 3010-00-517-1845

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04459
FIIG:
A522B0
Concept No.:
App. Key:
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:
126880
UFC:
64300
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8483608000
  • SITC: 74860
  • End Use: Industrial machines, other
  • NAICS: 333613
  • USDA: 1

Freight Class: Shaft couplings, except universal joints

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