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Technical Data Sheet
PartsTable / COMPONENT / 55173
55173 ✓ Verified by PartsTable
Disguise · 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

TOP ASSEMBLY,TRUCK BODY,DETACHAB. Key specifications include special_features: U-SHAPED BODY; PISTON OPERATED; PART OF FRONT BRAKE SYSTEM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-088-2922, 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
55173
NSN: 3120-00-088-2922
FSC: 3120
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
special_featuresU-SHAPED BODY; PISTON OPERATED; PART OF FRONT BRAKE SYSTEM
NSN3120-00-088-2922
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 55173 · Disguise ⚠ 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
•
HARDNESS RATING: 36.0 ROCKWELL C NOMINAL OUTER RACE MEMBER
•
LUBRICATION FEATURE: GROOVE AND PERFORATION EXTERNAL OUTER MEMBER
•
SURFACE TREATMENT: CHROMIUM FLAT BEARING SURFACE
•
BORE DIAMETER: 0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
OUTER MEMBER WIDTH: 0.3120 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 52100 81343 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
•
MATERIAL: STEEL OUTER RACE MEMBER
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING36.0 ROCKWELL C NOMINAL OUTER RACE MEMBER
LUBRICATION FEATUREGROOVE AND PERFORATION EXTERNAL OUTER MEMBER
SURFACE TREATMENTCHROMIUM FLAT BEARING SURFACE
BORE DIAMETER0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.3120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 52100 81343 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
LUBRICATION FEATUREGROOVE AND PERFORATION INTERNAL INNER MEMBER
MATERIALSTEEL OUTER RACE MEMBER
STYLE DESIGNATORWITHOUT INSERT OR LINER
LUBRICATION FEATUREGROOVE INTERNAL OUTER MEMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
3120001130612Interchangeable
interchangeable cross-reference
interchangeable
K5198502Interchangeable
interchangeable cross-reference
interchangeable
PC5198502Interchangeable
interchangeable cross-reference
interchangeable
50468Interchangeable
interchangeable cross-reference
interchangeable
55173Interchangeable
interchangeable cross-reference
interchangeable
104A WITH 104AZZInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55173?
55173 is a TOP ASSEMBLY,TRUCK BODY,DETACHAB manufactured by Disguise.
What parts can replace 55173?
There are 17 known substitutes for 55173: 3120001130612, K5198502, PC5198502 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 55173?
55173 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-088-2922. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026