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HK-121-2 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

HK-121-2: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, block_type: REGULAR, load_rating: 30000.0 POUNDS MAXIMUM LBS, shell_length: 18.000 INCHES NOMINAL IN, bore_diameter: 12.0 MILLIMETERS NOMINAL MM, overall_width: 11.8 MILLIMETERS MINIMUM AND 12.0 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-272-9118, 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
HK-121-2
NSN: 3110-01-272-9118
NIINs: 012729118, 015268746
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 27737 — INA BEARING CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
block_typeREGULAR
load_rating30000.0 POUNDS MAXIMUM LBS
shell_length18.000 INCHES NOMINAL IN
bore_diameter12.0 MILLIMETERS NOMINAL MM
overall_width11.8 MILLIMETERS MINIMUM AND 12.0 MILLIMETERS MAXIMUM MM
alignment_typeRIGID
surface_finishGROUND
sheave_quantity1
attachment_styleFLATTED LOOSE SWIVEL SAFETY SNAP HOOK
special_featuresHOOK BLOCK SUPERSTRUCTURE ASSY
style_designatorOVAL PATTERN
NSN3110-01-272-9118
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: HK-121-2 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-SEPARABLE, OPEN END, DRAWN SHELL
•
OVERALL OUTSIDE DIAMETER: 18.0 MILLIMETERS NOMINAL MM
•
ALIGNMENT TYPE: RIGID
•
BORE DIAMETER: 12.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
SURFACE FINISHGROUND
STYLE DESIGNATORNON-SEPARABLE, OPEN END, DRAWN SHELL
OVERALL WIDTH11.8 MILLIMETERS MINIMUM AND 12.0 MILLIMETERS MAXIMUM MM
OVERALL OUTSIDE DIAMETER18.0 MILLIMETERS NOMINAL MM
ALIGNMENT TYPERIGID
BORE DIAMETER12.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
00.550.0060Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 HK-121-2?
HK-121-2 is a BEARING,ROLLER,NEEDLE.
What parts can replace HK-121-2?
There is 1 known substitute for HK-121-2: 00.550.0060. Substitute compatibility should be verified for your specific system.
What is the NSN for HK-121-2?
HK-121-2 is cataloged in the U.S. Government catalog under NSN 3110-01-272-9118. 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.