Model: S643M

Ball Bearing Unit

Special Features:

Locking pin and dimple locate lubrication hole

Properties:

Mounting Hole Diameter

0.6250 inches

Bore Diameter

2.6875 inches

Housing Height

8.7500 inches

Lubrication Fitting Type

Pipe plug

Rolling Element Groove Quantity

Alignment Type

Self-aligning

Internal Fit-up Designation

Standard

Seal Type

Labyrinth

Block Type

Fixed

Shaft End Type

Open

Seal Location

Both ends

Height From Bottom Of Base To Bore Centerline

4.3750 inches

Features Provided

Ground rolling element groove

Rotating Element Locking Method

Direct

Lubrication Material

Oil

Material

Iron cast housing

NSN

3130-00-278-7498

Part Number

S643M

Description

Bearing Unit,ball

CAGE

57448

An assembled unit, composed of a housing incorporating a single or multiple row ball bearing(s), designed to meet various or specific conditions of mounting.

Part S643M NSN 3130-00-278-7498

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

30556

FIIG:

A093A0

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

114820

UFC:

58860

LTL:

77.5

LCL:

77.5

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8482991050
SITC: 74699
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Parts, except inner and outer races, for ball bearings, (including ball bearings with integral shafts)