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129556 — RESISTOR,VARIABLE,WIRE WOUND,PRE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

129556: RESISTOR,VARIABLE,WIRE WOUND,PRE.

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include material: STEEL COMP 8640 OVERALL, nut_style: HEXAGON, bore_shape: STRAIGHT, head_style: KNURLED NO. 4, nut_height: 0.438 INCHES NOMINAL IN, flexibility: RIGID ALL TUBING SEGMENT.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-144-8561, 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
129556
NSN: 3110-00-144-8561
NIINs: 001448561, 007909673, 011865162, 012810188
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
materialSTEEL COMP 8640 OVERALL
nut_styleHEXAGON
bore_shapeSTRAIGHT
head_styleKNURLED NO. 4
nut_height0.438 INCHES NOMINAL IN
flexibilityRIGID ALL TUBING SEGMENT
head_height0.625 INCHES NOMINAL IN
point_styleCONE
point_length0.125 INCHES NOMINAL IN
thread_class2B
bore_diameter65.00 MILLIMETERS NOMINAL MM
head_diameter0.688 INCHES NOMINAL IN
NSN3110-00-144-8561
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 129556 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 120.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH23.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER120.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER65.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 9
16X213SReference document
Same NSN cross-reference
Reference document — Secondary reference
742155Reference document
Same NSN cross-reference
Reference document — Secondary reference
6213Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
D4235Reference document
Same NSN cross-reference
Reference document — Secondary reference
3213XReference document
Same NSN cross-reference
Reference document — Secondary reference
949-786P26CReference 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 129556?
129556 is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace 129556?
There are 9 known substitutes for 129556: 16X213S, 742155, 6213 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 129556?
129556 is cataloged in the U.S. Government catalog under NSN 3110-00-144-8561. 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.