PartsTable
Technical Data Sheet
PartsTable / COMPONENT / E-172-2
E-172-2 ✓ 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

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include material: RUBBER, port_style: GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED, corner_shape: SQUARE ALL CORNERS, overall_width: 2.781 INCHES NOMINAL IN, overall_height: 5.125 INCHES NOMINAL IN, overall_length: 0.7300 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-293-5853, 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
E-172-2
NSN: 3120-00-293-5853
FSC: 3120
CAGE: U4679 — H & M AUTO ELECTRICAL LTD (GBR)
SPECIFICATIONS
materialRUBBER
port_styleGASKET SEAL LOCATION NOT OTHERWISE SPECIFIED
corner_shapeSQUARE ALL CORNERS
overall_width2.781 INCHES NOMINAL IN
overall_height5.125 INCHES NOMINAL IN
overall_length0.7300 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN
reservoir_typeINTEGRAL
extended_length8.688 INCHES NOMINAL IN
actuation_methodDIRECT
overall_diameter0.750 INCHES NOMINAL IN
size_designation2
special_featuresNON-CONDUCTIVE TRANSPARENT USED FOR RESUSCITATION, OBSTERICS, EMERGENCIES, AND ANESTHESIA WHERE CONDUCTIVITY IS NOT ESSENTIAL
NSN3120-00-293-5853
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: E-172-2 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL: LUBRICANT LUBRICATION
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY INSIDE DIAMETER: 0.5005 INCHES MINIMUM AND 0.5015 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALLUBRICANT LUBRICATION
CORNER SHAPESQUARE ALL CORNERS
MATERIALCOPPER ALLOY OVERALL
BODY INSIDE DIAMETER0.5005 INCHES MINIMUM AND 0.5015 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
OVERALL LENGTH0.7300 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
96547HInterchangeable
interchangeable cross-reference
interchangeable
E220041Interchangeable
interchangeable cross-reference
interchangeable
3125742Interchangeable
interchangeable cross-reference
interchangeable
E1722Interchangeable
interchangeable cross-reference
interchangeable
448B617U01Interchangeable
interchangeable cross-reference
interchangeable
448B617U01 5-17-10/12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E-172-2?
E-172-2 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace E-172-2?
There are 9 known substitutes for E-172-2: 96547H, E220041, 3125742 and 6 more. Substitute compatibility should be verified for your specific system.
Is E-172-2 still available?
E-172-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026