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HB-88508 — BEARING UNIT,BALL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

HB-88508: BEARING UNIT,BALL.

The BEARING UNIT,BALL is a the manufacturer industrial component. Key specifications include material: STEEL HOUSING, bore_diameter: 1.5748 INCHES NOMINAL1.5748 INCHES NOMINAL IN, seal_location: BOTH ENDS, shaft_end_type: OPEN, style_designator: PILLOW BLOCK, SEPARABLE WITH INNERLINER, features_provided: GROUND ROLLING ELEMENT GROOVE. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-231-3384, 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
HB-88508
NSN: 3130-01-231-3384
FSC: 3130 — Bearings, Mounted
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL HOUSING
bore_diameter1.5748 INCHES NOMINAL1.5748 INCHES NOMINAL IN
seal_locationBOTH ENDS
shaft_end_typeOPEN
style_designatorPILLOW BLOCK, SEPARABLE WITH INNERLINER
features_providedGROUND ROLLING ELEMENT GROOVE
mounting_hole_typeSLOTTED
load_capability_typeRADIAL
rolling_element_groove_quantity2
center_to_center_distance_between_mounting_holes_along_width6.624 INCHES NOMINAL IN
NSN3130-01-231-3384
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HB-88508 · 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
•
MOUNTING HOLE TYPE: SLOTTED
•
SEAL LOCATION: BOTH ENDS
•
STYLE DESIGNATOR: PILLOW BLOCK, SEPARABLE WITH INNERLINER
•
FEATURES PROVIDED: GROUND ROLLING ELEMENT GROOVE
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG WIDTH: 6.624 INCHES NOMINAL IN
•
ROLLING ELEMENT GROOVE QUANTITY: 2
•
SHAFT END TYPE: OPEN
•
BORE DIAMETER: 1.5748 INCHES NOMINAL1.5748 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE TYPESLOTTED
SEAL LOCATIONBOTH ENDS
STYLE DESIGNATORPILLOW BLOCK, SEPARABLE WITH INNERLINER
FEATURES PROVIDEDGROUND ROLLING ELEMENT GROOVE
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG WIDTH6.624 INCHES NOMINAL IN
ROLLING ELEMENT GROOVE QUANTITY2
SHAFT END TYPEOPEN
BORE DIAMETER1.5748 INCHES NOMINAL1.5748 INCHES NOMINAL IN
MATERIALSTEEL HOUSING
MATERIALSTEEL BALL
SUBSTITUTES & CROSS-REFERENCES 3
D4TZ4840-BReference document
Same NSN cross-reference
Reference document — Secondary reference
291869C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
35-6038Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HB-88508?
HB-88508 is a BEARING UNIT,BALL.
What parts can replace HB-88508?
There are 3 known substitutes for HB-88508: D4TZ4840-B, 291869C1, 35-6038. Substitute compatibility should be verified for your specific system.
What is the NSN for HB-88508?
HB-88508 is cataloged in the U.S. Government catalog under NSN 3130-01-231-3384. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.