Model: 644A987-006

Annular Ball Bearing

Properties:

Overall Width

1.7500 inches

Bore Diameter

50.00 millimeters

Overall Outside Diameter

110.00 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

Internal Fit-up Contact Angular Direction

Outward convergent

Standard Tolerance Designation

Abec no.1

Contact Angle

25.0 degrees

Lubrication Material

Grease

Lubrication Material Specification

Dod-g-24508 military specification single material response

Material

Steel

Style Designator

28b loading groove, non-separable

Style Designator

Loading groove, non-separable

NSN

3110-00-554-5832

Part Number

644A987-006

Description

Bearing,ball,annular

CAGE

01289

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 644A987-006 NSN 3110-00-554-5832

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00014

FIIG:

A044A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

4.0000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

114820

UFC:

58860

LTL:

77.5

LCL:

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

End Items End applications NSN 3110-00-554-5832 is a component of

Ticonderoga Class Cg (47)
Spruance Class Dd (963)
Full Track Tractor
Forrestal Class Cv
Nimitz Class Cvn
Tarawa Class Lha
Supply Class Aoe
Fms - Newport Class Lst
Hayes Class T-ag 195

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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