PartsTable
Technical Data Sheet
PA1-21 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, lens_color: AMBER SINGLE LIGHT FIRST POSITION HORIZONTAL, bore_diameter: 9.00 MILLIMETERS NOMINAL MM, overall_width: 8.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-555-5399, 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
MRO MRO_GENERAL PA1-21
NSN: 3110-00-555-5399
FSC: 3110
CAGE: 2Y614 — LINK-BELT CRANES, L.P., LLLP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
lens_colorAMBER SINGLE LIGHT FIRST POSITION HORIZONTAL
bore_diameter9.00 MILLIMETERS NOMINAL MM
lens_quantity1
overall_width8.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
mounting_methodPANEL
shield_quantity2
special_featuresALUMINUM ALLOY,BLACK INSULUBE; 3.670 IN. LG; 1.000 IN. W; 0.530 IN. H; FOUR 0.174 IN. DIA THRU HOLES AND FOUR 0.120 IN. DIA THRU HOLES IRREGULARLY SPACED IN
style_designatorROUND FRAME, ROUND LENS TYPE
NSN3110-00-555-5399
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: PA1-21 · 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
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
SHIELD QUANTITY: 2
SURFACE FINISH: GROUND
RETAINER FABRICATION METHOD: PRESSED
LOAD DIRECTION: RADIAL
LUBRICATION MATERIAL: GREASE
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SHIELD QUANTITY2
SURFACE FINISHGROUND
RETAINER FABRICATION METHODPRESSED
LOAD DIRECTIONRADIAL
LUBRICATION MATERIALGREASE
BORE SHAPESTRAIGHT
INTERNAL CLEARANCE0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
3185532Interchangeable
interchangeable cross-reference
interchangeable
PA1-21Interchangeable
interchangeable cross-reference
interchangeable
051-00003-2Interchangeable
interchangeable cross-reference
interchangeable
2602502Interchangeable
interchangeable cross-reference
interchangeable
77039XR1MILL3545Interchangeable
Same NIIN cross-reference
interchangeable
39KDDMILL3545Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PA1-21?
PA1-21 is a BEARING,BALL,ANNULAR. It is classified as a MRO (MRO_GENERAL).
What parts can replace PA1-21?
There are 13 known substitutes for PA1-21: 3185532, PA1-21, 051-00003-2 and 10 more. Substitute compatibility should be verified for your specific system.
Is PA1-21 still available?
PA1-21 is currently cancelled.
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