PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 278-103-221
278-103-221 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include color: NATURAL OVERALL, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, body_width: 1.406 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN, body_height: 2.374 INCHES MINIMUM AND 2.562 INCHES MAXIMUM IN, body_length: 1.406 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN, temp_rating: -100.0 FAHRENHEIT MINIMUM AND 500.0 FAHRENHEIT MAXIMUM DEGF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-501-4290, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
278-103-221
NSN: 3130-01-501-4290
FSC: 3130
CAGE: 50893 — RIDGE TOOL COMPANY (USA)
SPECIFICATIONS
colorNATURAL OVERALL
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
body_width1.406 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN
body_height2.374 INCHES MINIMUM AND 2.562 INCHES MAXIMUM IN
body_length1.406 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN
temp_rating-100.0 FAHRENHEIT MINIMUM AND 500.0 FAHRENHEIT MAXIMUM DEGF
adhesive_typePRESSURE SENSITIVE
document_typeINDUSTRIAL DRAWING
nominal_width1.000 INCHES IN
inclosure_typeHERMETICALLY SEALEDHERMETICALLY SEALED
nominal_length1296.0 INCHES IN
overall_height3.062 INCHES NOMINAL IN
NSN3130-01-501-4290
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 278-103-221 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
23552Interchangeable
interchangeable cross-reference
interchangeable
8281Interchangeable
interchangeable cross-reference
interchangeable
SD502PC23Interchangeable
interchangeable cross-reference
interchangeable
GKT31-5Interchangeable
interchangeable cross-reference
interchangeable
BA306Interchangeable
interchangeable cross-reference
interchangeable
FLASH RELEASE 2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 278-103-221?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 278-103-221?
278-103-221 is a HOUSING,BEARING UNIT.
What parts can replace 278-103-221?
There are 9 known substitutes for 278-103-221: 23552, 8281, SD502PC23 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 278-103-221?
278-103-221 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-501-4290. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 278-103-221

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026