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Technical Data Sheet
PartsTable / COMPONENT / R-120
R-120 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The CUP,HYDRAULIC BRAKE CYLINDER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, bore_shape: STRAIGHT, head_style: PAN NO. 2, handle_type: TEE, head_height: 0.080 INCHES NOMINAL IN, reamer_type: REPAIRMANS TAPER.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-7338, 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
R-120
NSN: 3110-00-155-7338
FSC: 3110
CAGE: 80038 — EQUITABLE BEARING CO INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
bore_shapeSTRAIGHT
head_stylePAN NO. 2
handle_typeTEE
head_height0.080 INCHES NOMINAL IN
reamer_typeREPAIRMANS TAPER
angle_in_deg60.0
flute_designSTRAIGHT
thread_class2A A
bore_diameter20.0 MILLIMETERS NOMINAL MM
cup_protectorNOT INCLUDED
head_diameter0.270 INCHES NOMINAL IN
NSN3110-00-155-7338
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R-120 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL OUTSIDE DIAMETER: 47.0 MILLIMETERS NOMINAL MM
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
LOCATING FEATURE: NONLOCATING
•
MATERIAL: STEEL INNER RING
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER47.0 MILLIMETERS NOMINAL MM
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
LOCATING FEATURENONLOCATING
MATERIALSTEEL INNER RING
MATERIALSTEEL OUTER RING
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
MATERIALSTEEL ROLLER
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
BORE DIAMETER20.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
R120Interchangeable
interchangeable cross-reference
interchangeable
5590426Interchangeable
interchangeable cross-reference
interchangeable
616363Interchangeable
interchangeable cross-reference
interchangeable
4600Interchangeable
interchangeable cross-reference
interchangeable
FC4600Interchangeable
interchangeable cross-reference
interchangeable
R17Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R-120?
R-120 is a CUP,HYDRAULIC BRAKE CYLINDER.
What parts can replace R-120?
There are 19 known substitutes for R-120: R120, 5590426, 616363 and 16 more. Substitute compatibility should be verified for your specific system.
Is R-120 still available?
R-120 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