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RM184B50 — CAP,PILLOW BLOCK

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

RM184B50: CAP,PILLOW BLOCK.

The CAP,PILLOW BLOCK is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 3130-00-353-1189, 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
RM184B50
NSN: 3130-00-353-1189
FSC: 3130 — Bearings, Mounted
CAGE: 27996 — HEIL ENVIRONMENTAL INDUSTRIES (USA)
SPECIFICATIONS
Part NumberRM184B50
NSN3130-00-353-1189
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: RM184B50 · 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
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL SAE 1022,5.3750 IN. DIA LEFT END,6.1250 IN. DIA RIGHT END,1.4062 IN. LG,LEFT OUTSIDE CORNER CHAMFER 0.6250 IN. LG,30 DEG ANGLE,BORE 4.0010 IN. MIN,4.0030 IN MAX DIA,RIGHT END COUNTERBORED 4.7230 IN. MIN,4.7250 IN. MAX DIA,0.8900 IN. MIN,0.8950 IN. MAX DEEP,SIX MTG HOLES,DRILL 1.000 IN. DEEP,0.3750 IN.-16 UNC3B THD 0.7500 IN.LG,EQUALLY SPACED ON 5.5000 IN. DIA BOLT CIRCLE ON RIGHT END IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL SAE 1022,5.3750 IN. DIA LEFT END,6.1250 IN. DIA RIGHT END,1.4062 IN. LG,LEFT OUTSIDE CORNER CHAMFER 0.6250 IN. LG,30 DEG ANGLE,BORE 4.0010 IN. MIN,4.0030 IN MAX DIA,RIGHT END COUNTERBORED 4.7230 IN. MIN,4.7250 IN. MAX DIA,0.8900 IN. MIN,0.8950 IN. MAX DEEP,SIX MTG HOLES,DRILL 1.000 IN. DEEP,0.3750 IN.-16 UNC3B THD 0.7500 IN.LG,EQUALLY SPACED ON 5.5000 IN. DIA BOLT CIRCLE ON RIGHT END IN
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES 1
290775R1Reference 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 RM184B50?
RM184B50 is a CAP,PILLOW BLOCK.
What parts can replace RM184B50?
There is 1 known substitute for RM184B50: 290775R1. Substitute compatibility should be verified for your specific system.
What is the NSN for RM184B50?
RM184B50 is cataloged in the U.S. Government catalog under NSN 3130-00-353-1189. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.