Model: ST21900390

Duplex Ball Bearing

Properties:

Overall Width
0.5000 inches
Bore Diameter
0.7500 inches
Overall Outside Diameter
1.1875 inches
Lubrication Material
Grease
Surface Finish
Ground
Retainer Fabrication Method
Machined
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Angular
Bearing Preload Designation
Light
Internal Clearance
0.0005 inches radial and 0.0015 inches radial
Standard Tolerance Designation
Abec no. 7t
Bearing Preload Rating
Between 6.0 pounds and 10.0 pounds
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Steel comp 440c ballsteel comp 440c inner ringstainless steel insertsteel comp 440c outer ringplastic phenolic retainerrubber synthetic seal or plastic polytetrafluoroethylene seal
Style Designator
92c counterbored outer rings, non-separable, face to face mounting
NSN
3110-01-340-2153
Part Number
ST21900390
Description
Bearing,ball,duplex
CAGE
81395

Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.

Part ST21900390 NSN 3110-01-340-2153

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
30213
FIIG:
A044A0
Concept No.:
App. Key:
E
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:
114820
UFC:
58860
LTL:
77.5
LCL:
--
WCC:
742
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8482105068
  • SITC: 74610
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Ball bearings, nesoi

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