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Technical Data Sheet
PartsTable / COMPONENT / SC7-8 PILLOW BLOCK
SC7-8 PILLOW BLOCK ✓ 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

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include material: RUBBER SYNTHETIC AND STEEL SEAL, seal_type: CONTACT, block_type: FIXED, base_length: 1.6250 INCHES NOMINAL IN, bore_diameter: 0.8750 INCHES NOMINAL IN, housing_width: 5.5000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-109-1431, 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
SC7-8 PILLOW BLOCK
NSN: 3130-01-109-1431
FSC: 3130
CAGE: 71956 — RELIANCE ELECTRIC COMPANY DBA RELIANCE & DODGE BRANDS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC AND STEEL SEAL
seal_typeCONTACT
block_typeFIXED
base_length1.6250 INCHES NOMINAL IN
bore_diameter0.8750 INCHES NOMINAL IN
housing_width5.5000 INCHES NOMINAL IN
seal_locationBOTH ENDS
alignment_typeSELF-ALIGNING
base_thickness0.7500 INCHES NOMINAL IN
housing_height2.7812 INCHES NOMINAL IN
shaft_end_typeOPEN
collar_locationONE END
NSN3130-01-109-1431
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SC7-8 PILLOW BLOCK · 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
•
SEAL LOCATION: BOTH ENDS
•
LUBRICATION FITTING ANGLE FROM HORIZONTAL CENTERLINE: 45.0 DEGREES NOMINAL
•
SEAL TYPE: CONTACT
•
ROLLING ELEMENT GROOVE QUANTITY: 1
•
HOUSING WIDTH: 5.5000 INCHES NOMINAL IN
•
BASE THICKNESS: 0.7500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PILLOW BLOCK, SOLID
•
MATERIAL: RUBBER SYNTHETIC AND STEEL SEAL
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
SEAL LOCATIONBOTH ENDS
LUBRICATION FITTING ANGLE FROM HORIZONTAL CENTERLINE45.0 DEGREES NOMINAL
SEAL TYPECONTACT
ROLLING ELEMENT GROOVE QUANTITY1
HOUSING WIDTH5.5000 INCHES NOMINAL IN
BASE THICKNESS0.7500 INCHES NOMINAL IN
STYLE DESIGNATORPILLOW BLOCK, SOLID
MATERIALRUBBER SYNTHETIC AND STEEL SEAL
HEIGHT FROM BOTTOM OF BASE TO BORE CENTERLINE1.4375 INCHES NOMINAL IN
LOAD CAPABILITY TYPERADIAL AND THRUST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
331-00042M0250KInterchangeable
interchangeable cross-reference
interchangeable
331-000-U2M0-250KInterchangeable
interchangeable cross-reference
interchangeable
3068420-1Interchangeable
interchangeable cross-reference
interchangeable
123804Interchangeable
interchangeable cross-reference
interchangeable
R1041-1AInterchangeable
interchangeable cross-reference
interchangeable
5M454-1A10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SC7-8 PILLOW BLOCK?
SC7-8 PILLOW BLOCK is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace SC7-8 PILLOW BLOCK?
There are 16 known substitutes for SC7-8 PILLOW BLOCK: 331-00042M0250K, 331-000-U2M0-250K, 3068420-1 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SC7-8 PILLOW BLOCK?
SC7-8 PILLOW BLOCK is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-109-1431. 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