PartsTable
Technical Data Sheet
HSP4-157 ✓ 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,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, bore_diameter: 0.3660 INCHES NOMINAL IN, alignment_type: SELF-ALIGNING, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2140 INCHES MINIMUM AND 0.2190 INCHES MAXIMUM 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 3120-01-122-3070, 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
HSP4-157
NSN: 3120-01-122-3070
FSC: 3120
CAGE: 02758 — U S BEARINGS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
bore_diameter0.3660 INCHES NOMINAL IN
seal_quantity2
alignment_typeSELF-ALIGNING
load_directionRADIAL
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2140 INCHES MINIMUM AND 0.2190 INCHES MAXIMUM IN
special_features80 PCT. FULL OF MIL-G-81322,AXIAL PLAY 0.025 IN. MAX.,HEAT TREAT RINGS AND BALLS TO ROCKWELL C 60 TO 66 AND STABILIZED FOR OPERATION AT 250 DEG.F,8 DEG SELF-ALIGNING IN EITHER DIRECTION IN
style_designatorSINGLE ROW, EXTERNAL SELF ALIGNING, W/ALIGNING RING
bearing_seal_typeCONTACT
surface_treatmentCADMIUM EXPOSED SURFACES AS MOUNTED
self-alignment_locationINTERNAL
NSN3120-01-122-3070
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HSP4-157 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MS27645-4AInterchangeable
interchangeable cross-reference
interchangeable
KSP4AFS464Interchangeable
interchangeable cross-reference
interchangeable
BB1156Interchangeable
interchangeable cross-reference
interchangeable
KS4Interchangeable
interchangeable cross-reference
interchangeable
KS4AC1Interchangeable
interchangeable cross-reference
interchangeable
218-42309-101Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HSP4-157?
HSP4-157 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace HSP4-157?
There are 7 known substitutes for HSP4-157: MS27645-4A, KSP4AFS464, BB1156 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HSP4-157?
HSP4-157 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-122-3070. This indicates validated use in U.S. government and defense supply chains.
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