PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 3770-41490
3770-41490 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

SLEEVE,DIRECTIONAL CONTROL LINEA. Key specifications include material: STEEL, overall_height: 5.500 INCHES NOMINAL IN, special_features: W/S LOS ANGELES CLASS SSN (688), compressed_length: 14.000 INCHES NOMINAL IN, end_item_identification: E/I ROTARY HYDRAULIC ACTUATOR, MODEL 3770A A, integral_valve_operation_method: HYDRAULIC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-483-9109, 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
3770-41490
NSN: 3120-01-483-9109
FSC: 3120
CAGE: 07270 — MOOG INC. DBA AMPAC-ISP CORP (USA)
SPECIFICATIONS
materialSTEEL
overall_height5.500 INCHES NOMINAL IN
special_featuresW/S LOS ANGELES CLASS SSN (688)
compressed_length14.000 INCHES NOMINAL IN
end_item_identificationE/I ROTARY HYDRAULIC ACTUATOR, MODEL 3770A A
integral_valve_operation_methodHYDRAULIC
part_name_assigned_by_controlling_agencyCYLINDER SLEEVE
NSN3120-01-483-9109
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3770-41490 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
3770-41490Interchangeable
interchangeable cross-reference
interchangeable
3770-41490 ITEM 6Interchangeable
interchangeable cross-reference
interchangeable
41496Interchangeable
interchangeable cross-reference
interchangeable
3770AInterchangeable
interchangeable cross-reference
interchangeable
41498Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3770-41490?
3770-41490 is a SLEEVE,DIRECTIONAL CONTROL LINEA.
What parts can replace 3770-41490?
There are 5 known substitutes for 3770-41490: 3770-41490, 3770-41490 ITEM 6, 41496 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3770-41490?
3770-41490 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-483-9109. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026