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74841556 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

74841556: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include material: IRON CAST OVERALL, shaft_end_type: OPEN, style_designator: PILLOW BLOCK, SOLID, mounting_hole_type: SLOTTED, lubrication_fitting_type: HYDRAULIC, lubrication_fitting_angle_from_horizontal_centerline: 60.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-231-5969, 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
74841556
NSN: 3130-01-231-5969
FSC: 3130 — Bearings, Mounted
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
shaft_end_typeOPEN
style_designatorPILLOW BLOCK, SOLID
mounting_hole_typeSLOTTED
lubrication_fitting_typeHYDRAULIC
lubrication_fitting_angle_from_horizontal_centerline60.0 DEGREES NOMINAL
NSN3130-01-231-5969
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 74841556 · 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
•
LUBRICATION FITTING TYPE: HYDRAULIC
•
MOUNTING HOLE TYPE: SLOTTED
•
STYLE DESIGNATOR: PILLOW BLOCK, SOLID
•
SHAFT END TYPE: OPEN
•
MATERIAL: IRON CAST OVERALL
•
LUBRICATION FITTING ANGLE FROM HORIZONTAL CENTERLINE: 60.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
LUBRICATION FITTING TYPEHYDRAULIC
MOUNTING HOLE TYPESLOTTED
STYLE DESIGNATORPILLOW BLOCK, SOLID
SHAFT END TYPEOPEN
MATERIALIRON CAST OVERALL
LUBRICATION FITTING ANGLE FROM HORIZONTAL CENTERLINE60.0 DEGREES NOMINAL
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
74841556-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74841556?
74841556 is a HOUSING,BEARING UNIT.
What parts can replace 74841556?
There is 1 known substitute for 74841556: 74841556-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 74841556?
74841556 is cataloged in the U.S. Government catalog under NSN 3130-01-231-5969. 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.