PartsTable
Technical Data Sheet
30H21 ✓ Verified by PartsTable
· TAPERED BEARING
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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include radius: 2.125 INCHES NOMINAL IN, material: STEEL, outside_diameter: 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN, special_features: ROCKWELL HARDNESS B-50 MIN,B-80 MAX; CAN ALSO BE SUPPLIED WITH EDGE CUT,AS IN STYLE B7, style_designator: CONCAVE, material_thickness: 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0338, 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
30H21
NSN: 3110-00-100-0338
FSC: 3110
CAGE: 61790 — ASTEC INDUSTRIES INC DIV ASTEC IND. (USA)
SPECIFICATIONS
radius2.125 INCHES NOMINAL IN
materialSTEEL
outside_diameter1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN
special_featuresROCKWELL HARDNESS B-50 MIN,B-80 MAX; CAN ALSO BE SUPPLIED WITH EDGE CUT,AS IN STYLE B7
style_designatorCONCAVE
material_thickness0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
material_document_and_classificationSAE 1008 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1010 ASSN STD SINGLE MATERIAL RESPONSE
NSN3110-00-100-0338
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 30H21 · 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
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
MATERIAL: STEEL OVERALL
OUTSIDE DIAMETER: 6.3750 INCHES NOMINAL IN
STYLE DESIGNATOR: NORMAL ANGLE
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
OVERALL WIDTH1.5000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER6.3750 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
752DELUXEInterchangeable
interchangeable cross-reference
interchangeable
752Interchangeable
interchangeable cross-reference
interchangeable
7748694Interchangeable
interchangeable cross-reference
interchangeable
109298Interchangeable
interchangeable cross-reference
interchangeable
SRS109298Interchangeable
interchangeable cross-reference
interchangeable
149044Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 30H21?
30H21 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 30H21?
There are 25 known substitutes for 30H21: 752DELUXE, 752, 7748694 and 22 more. Substitute compatibility should be verified for your specific system.
Is 30H21 still available?
30H21 is currently cancelled.
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