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128881 — PUMP,HYDRAULIC RAM,HAND DRIVEN

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

128881: PUMP,HYDRAULIC RAM,HAND DRIVEN.

The PUMP,HYDRAULIC RAM,HAND DRIVEN is a the manufacturer industrial component. Key specifications include inside_diameter: 4.500 INCHES NOMINAL IN, outside_diameter: 4.880 INCHES NOMINAL IN, end_item_identification: CUMMINS ENGINE CO.,DIESEL ENGINE MDL.KTA 50M, inside_surface_condition: SMOOTH, cross-sectional_shape_style: ROUND, measuring_method_and_length: 4.000 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-580-1883, 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
128881
NSN: 3120-00-580-1883
NIINs: 005801883, 013061022, 015560327
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
inside_diameter4.500 INCHES NOMINAL IN
outside_diameter4.880 INCHES NOMINAL IN
end_item_identificationCUMMINS ENGINE CO.,DIESEL ENGINE MDL.KTA 50M
inside_surface_conditionSMOOTH
cross-sectional_shape_styleROUND
measuring_method_and_length4.000 INCHES NOMINAL OVERALL IN
NSN3120-00-580-1883
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 128881 · 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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MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
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MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
SUBSTITUTES & CROSS-REFERENCES 10
B510364REVALINE10Reference document
Same NSN cross-reference
Reference document — Secondary reference
580-513-1416701REVALINE10Reference document
Same NSN cross-reference
Reference document — Secondary reference
M210364REVCPC12Reference document
Same NSN cross-reference
Reference document — Secondary reference
3330209REVCPC12Reference document
Same NSN cross-reference
Reference document — Secondary reference
510364REVALINE10Reference document
Same NSN cross-reference
Reference document — Secondary reference
3120PL1339240Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 128881?
128881 is a PUMP,HYDRAULIC RAM,HAND DRIVEN.
What parts can replace 128881?
There are 10 known substitutes for 128881: B510364REVALINE10, 580-513-1416701REVALINE10, M210364REVCPC12 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 128881?
128881 is cataloged in the U.S. Government catalog under NSN 3120-00-580-1883. 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.