S643M Ball Bearing Unit

Comprehensive specifications and application details for: S643M Ball Bearing Unit.

Summary

Explore detailed summary information for bearing: S643M. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: S643M
Federal Supply Classification: 3130 Mounted Bearings
(NSN) National Stock Number: 3130-00-278-7498
Item Name Code: 30556
Federal Item Identification Guide: A093A0
Assigment Date: 01/01/1963

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.

ground rolling element groove features provided, 4.3750 inches nominal height from bottom of base to bore centerline, 2.6875 inches nominal bore diameter, fixed block type, self-aligning alignment type

Datasheet

Below are the comprehensive technical specifications for bearing: 3130-00-278-7498 . Find dimensions, materials, tolerances, performance characteristics, etc.

Alignment Type: self-aligning
Block Type: fixed
Bore Diameter: 2.6875 inches nominal
Features Provided: ground rolling element groove
Height From Bottom Of Base To Bore Centerline: 4.3750 inches nominal
Housing Height: 8.7500 inches nominal
Internal Fit-Up Designation: standard
Lubrication Material: oil
Lubrication Fitting Type: pipe plug
Material: iron cast housing
Mounting Hole Diameter: 0.6250 inches nominal
Rolling Element Groove Quantity: 1
Rotating Element Locking Method: direct
Seal Location: both ends
Seal Type: labyrinth
Shaft End Type: open
Special Features: locking pin and dimple locate lubrication hole

Frequently Asked Questions

Find quick answers to common questions about bearing: S643M. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3130-00-278-7498?: The FSCG of the NSN 3130-00-278-7498 is 3130

Does the NSN 3130-00-278-7498 have a Schedule B code assigned?: Yes, the Schedule B code is 8482991050

Does NSN 3130-00-278-7498 require demilitarization?: Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3130-00-278-7498 contain precious materials?: Item does not contain precious metal.

Does NSN 3130-00-278-7498 contain hazardous materials?: Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.