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120728 — PARTS KIT,HYDRAULIC TRANSMISSION

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

120728: PARTS KIT,HYDRAULIC TRANSMISSION.

PARTS KIT,HYDRAULIC TRANSMISSION. Key specifications include end_item_identification: HEAVY MAINTENANCE CRANE(HMC),WHEEL MOUNTED,25-TON. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0599, 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
120728
NSN: 3110-00-100-0599
NIINs: 001000599, 004482941, 012526181, 015808833, 016063218
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_item_identificationHEAVY MAINTENANCE CRANE(HMC),WHEEL MOUNTED,25-TON
NSN3110-00-100-0599
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 120728 · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 3.8750 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0310 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.8125 INCHES NOMINAL IN
OUTSIDE DIAMETER3.8750 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0310 INCHES NOMINAL IN
SPECIAL FEATURESSTEEP ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
64AX37Reference document
Same NSN cross-reference
Reference document — Secondary reference
310470Reference document
Same NSN cross-reference
Reference document — Secondary reference
313380Reference document
Same NSN cross-reference
Reference document — Secondary reference
A1228P1004Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
53387Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3A0070Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 120728?
120728 is a PARTS KIT,HYDRAULIC TRANSMISSION.
What parts can replace 120728?
There are 8 known substitutes for 120728: 64AX37, 310470, 313380 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 120728?
120728 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0599. 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.