PartsTable
Technical Data Sheet
C552-20 ✓ 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

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: PLASTIC RACE LINER, bore_diameter: 1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN, hardness_rating: 23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER, style_designator: WITH INSERT AND/OR LINER WITH STAKING GROOVE, inner_member_width: 1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN, outer_member_width: 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-583-0821, 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
C552-20
NSN: 3120-00-583-0821
FSC: 3120
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialPLASTIC RACE LINER
bore_diameter1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
hardness_rating23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER
style_designatorWITH INSERT AND/OR LINER WITH STAKING GROOVE
inner_member_width1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
outer_member_width1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
static_radial_load_rating158850 POUNDS LBS
outer_member_outside_diameter2.3745 INCHES MINIMUM AND 2.3750 INCHES MAXIMUM IN
NSN3120-00-583-0821
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: C552-20 · 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
STATIC RADIAL LOAD RATING: 158850 POUNDS LBS
STYLE DESIGNATOR: WITH INSERT AND/OR LINER WITH STAKING GROOVE
MATERIAL: STEEL CORROSION RESISTING OUTER RACE MEMBER
HARDNESS RATING: 55.0 ROCKWELL C MINIMUM INNER MEMBER
BORE DIAMETER: 1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STATIC RADIAL LOAD RATING158850 POUNDS LBS
STYLE DESIGNATORWITH INSERT AND/OR LINER WITH STAKING GROOVE
MATERIALSTEEL CORROSION RESISTING OUTER RACE MEMBER
MATERIALPLASTIC RACE LINER
HARDNESS RATING55.0 ROCKWELL C MINIMUM INNER MEMBER
HARDNESS RATING23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER
MATERIALSTEEL CORROSION RESISTING INNER MEMBER
BORE DIAMETER1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
OUTER MEMBER OUTSIDE DIAMETER2.3745 INCHES MINIMUM AND 2.3750 INCHES MAXIMUM IN
INNER MEMBER WIDTH1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
102741Interchangeable
interchangeable cross-reference
interchangeable
124928-001Interchangeable
interchangeable cross-reference
interchangeable
2621-906-13 ASSEMBLY LInterchangeable
interchangeable cross-reference
interchangeable
M3148-1Interchangeable
interchangeable cross-reference
interchangeable
10218-2Interchangeable
interchangeable cross-reference
interchangeable
176156Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C552-20?
C552-20 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace C552-20?
There are 6 known substitutes for C552-20: 102741, 124928-001, 2621-906-13 ASSEMBLY L and 3 more. Substitute compatibility should be verified for your specific system.
Is C552-20 still available?
C552-20 is currently cancelled.
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