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AS21438 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

AS21438: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL END PLATE, bore_diameter: 0.8750 INCHES NOMINAL IN, alignment_type: SELF-ALIGNING, surface_finish: GROUND, inner_ring_width: 1.1250 INCHES NOMINAL IN, outer_ring_width: 1.0750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-227-2803, 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
AS21438
NSN: 3110-00-227-2803
NIINs: 002272803, 012085389, 014113208
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL END PLATE
bore_diameter0.8750 INCHES NOMINAL IN
seal_quantity2
alignment_typeSELF-ALIGNING
surface_finishGROUND
inner_ring_width1.1250 INCHES NOMINAL IN
outer_ring_width1.0750 INCHES NOMINAL IN
style_designatorTRACK ROLLER, NON-SEPARABLE
bearing_seal_typeCONTACT
surface_treatmentCADMIUM END PLATE
lubrication_materialGREASE
self-alignment_locationEXTERNAL
NSN3110-00-227-2803
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AS21438 · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.3750 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: CAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7420 MIL SPEC 1ST MATERIAL RESPONSE OR 66 FED STD 1ST MATERIAL RESPONSE OR MIL-S-8690 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7493 MIL SPEC 3RD MATERIAL RESPONSE OR QQ-S-624 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-633 FED SPEC 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE OR 66 FED STD 5TH MATERIAL RESPONSE OVERALL
•
OVERALL OUTSIDE DIAMETER: 1.0625 INCHES NOMINAL IN
•
ALIGNMENT TYPE: RIGID
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.3750 INCHES NOMINAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORCAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7420 MIL SPEC 1ST MATERIAL RESPONSE OR 66 FED STD 1ST MATERIAL RESPONSE OR MIL-S-8690 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7493 MIL SPEC 3RD MATERIAL RESPONSE OR QQ-S-624 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-633 FED SPEC 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE OR 66 FED STD 5TH MATERIAL RESPONSE OVERALL
OVERALL OUTSIDE DIAMETER1.0625 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
SPECIAL FEATURESOIL HOLE AND GROOVE IN INNER RING
SURFACE TREATMENTCADMIUM EXPOSED SURFACES AS MOUNTED
SUBSTITUTES & CROSS-REFERENCES 8
8035005Reference document
Same NSN cross-reference
Reference document — Secondary reference
6NBF817YJReference document
Same NSN cross-reference
Reference document — Secondary reference
6HDANG25Reference document
Same NSN cross-reference
Reference document — Secondary reference
BACB10BN06Reference document
Same NSN cross-reference
Reference document — Secondary reference
ATF3Reference document
Same NSN cross-reference
Reference document — Secondary reference
6NBF817YJANG25Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS21438?
AS21438 is a BEARING,ROLLER,NEEDLE.
What parts can replace AS21438?
There are 8 known substitutes for AS21438: 8035005, 6NBF817YJ, 6HDANG25 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS21438?
AS21438 is cataloged in the U.S. Government catalog under NSN 3110-00-227-2803. This indicates validated use in U.S. government and defense supply chains.
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