PartsTable
Technical Data Sheet
S520MC ✓ 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 UNIT,BALL is a the manufacturer industrial component. Key specifications include material: IRON CAST HOUSING, seal_type: CONTACT, block_type: FIXED, base_length: 1.8750 INCHES NOMINAL IN, bore_diameter: 1.2500 INCHES NOMINAL IN, housing_width: 6.5625 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-00-618-6742, 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
S520MC
NSN: 3130-00-618-6742
FSC: 3130
CAGE: 57448 — STEPHENS-ADAMSON INC A SUB OF ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
materialIRON CAST HOUSING
seal_typeCONTACT
block_typeFIXED
base_length1.8750 INCHES NOMINAL IN
bore_diameter1.2500 INCHES NOMINAL IN
housing_width6.5625 INCHES NOMINAL IN
seal_locationBOTH ENDS
alignment_typeSELF-ALIGNING
base_thickness0.5625 INCHES NOMINAL IN
housing_height3.6875 INCHES NOMINAL IN
shaft_end_typeOPEN
style_designatorPILLOW BLOCK, SOLID
NSN3130-00-618-6742
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: S520MC · 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
BASE LENGTH: 1.8750 INCHES NOMINAL IN
ROLLING ELEMENT GROOVE QUANTITY: 1
HOUSING HEIGHT: 3.6875 INCHES NOMINAL IN
LOAD CAPABILITY TYPE: RADIAL
STYLE DESIGNATOR: PILLOW BLOCK, SOLID
ROTATING ELEMENT LOCKING METHOD: DIRECT
MATERIAL: IRON CAST HOUSING
MOUNTING HOLE TYPE: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
BASE LENGTH1.8750 INCHES NOMINAL IN
ROLLING ELEMENT GROOVE QUANTITY1
HOUSING HEIGHT3.6875 INCHES NOMINAL IN
LOAD CAPABILITY TYPERADIAL
STYLE DESIGNATORPILLOW BLOCK, SOLID
ROTATING ELEMENT LOCKING METHODDIRECT
MATERIALIRON CAST HOUSING
MOUNTING HOLE TYPESLOTTED
BASE THICKNESS0.5625 INCHES NOMINAL IN
SHAFT END TYPEOPEN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
13547Interchangeable
interchangeable cross-reference
interchangeable
MT 7413PInterchangeable
interchangeable cross-reference
interchangeable
53162Interchangeable
interchangeable cross-reference
interchangeable
6463N2PC52Interchangeable
interchangeable cross-reference
interchangeable
9547Interchangeable
interchangeable cross-reference
interchangeable
135-0047-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S520MC?
S520MC is a BEARING UNIT,BALL.
What parts can replace S520MC?
There are 20 known substitutes for S520MC: 13547, MT 7413P, 53162 and 17 more. Substitute compatibility should be verified for your specific system.
Is S520MC still available?
S520MC is currently cancelled.
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