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.

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

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.