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Technical Data Sheet
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R651 — BUSHING

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

R651: BUSHING.

The BUSHING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 3120-00-770-7185, 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
R651
NSN: 3120-00-770-7185
NIINs: 007707185, 012263097
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 66155 — PORTA DRILL INC (USA)
SPECIFICATIONS
Part NumberR651
NSN3120-00-770-7185
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: R651 · 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
SUBSTITUTES & CROSS-REFERENCES 1
536003Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R651?
R651 is a BUSHING.
What parts can replace R651?
There is 1 known substitute for R651: 536003. Substitute compatibility should be verified for your specific system.
What is the NSN for R651?
R651 is cataloged in the U.S. Government catalog under NSN 3120-00-770-7185. This indicates validated use in U.S. government and defense supply chains.
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