Model: 253R1

Annular Ball Bearing

Properties:

Overall Width
2.0625 inches
Bore Diameter
90.00 millimeters
Overall Outside Diameter
160.00 millimeters
Lubrication Material
Grease
Surface Finish
Ground
Retainer Fabrication Method
Pressed
Load Direction
Angular
Bore Shape
Straight
Internal Fit-up Designation
Standard
Internal Fit-up Contact Angular Direction
Inward convergent
Features Provided
Snap ring-groove mounting
Standard Tolerance Designation
Abec no.1
Contact Angle
25.0 degrees
Lubrication Material
Grease
Lubrication Material Specification
Mil-g-18709 military specification single material response
Material
Steel
Style Designator
28b loading groove, non-separable
Style Designator
Loading groove, non-separable
Nondefinitive Specification/std Data
145 type and 00 grade
Departure From Cited Designator
As modified by external mounting method and location
NSN
3110-00-277-0383
Part Number
253R1
Description
Bearing,ball,annular
CAGE
92679

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing, ball, duplex. Excludes bearing, ball, airframe.

Part 253R1 NSN 3110-00-277-0383

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00014
FIIG:
A044A0
Concept No.:
App. Key:
C
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

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Schedule B and Export
  • Schedule B: 8482105028
  • SITC: 74610
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Angular contact ball bearings, nesoi

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