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70-00257 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

70-00257: CUP,TAPERED ROLLER BEARING.

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 special_features: EXTRACTOR FOR THE HAWKEYE III LITE WTT, part_name_assigned_by_controlling_agency: GROUND ROD DRIVER. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-477-6737, 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
70-00257
NSN: 3110-00-477-6737
NIINs: 004776737, 014564878, 016420558
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51905 — JLG INDUSTRIES INC (USA)
SPECIFICATIONS
special_featuresEXTRACTOR FOR THE HAWKEYE III LITE WTT
part_name_assigned_by_controlling_agencyGROUND ROD DRIVER
NSN3110-00-477-6737
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 70-00257 · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 23.0 MILLIMETERS NOMINAL MM
•
BACKFACE CORNER RADIUS: 0.1000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
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
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH90.0 MILLIMETERS NOMINAL MM
OUTSIDE DIAMETER23.0 MILLIMETERS NOMINAL MM
BACKFACE CORNER RADIUS0.1000 INCHES NOMINAL IN
SPECIAL FEATURESDUTY CLASS JM SERIES
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
533727R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
JM205110Reference document
Same NSN cross-reference
Reference document — Secondary reference
167970Reference document
Same NSN cross-reference
Reference document — Secondary reference
1500805Reference document
Same NSN cross-reference
Reference document — Secondary reference
2CK228Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 70-00257?
70-00257 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 70-00257?
There are 5 known substitutes for 70-00257: 533727R1, JM205110, 167970 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 70-00257?
70-00257 is cataloged in the U.S. Government catalog under NSN 3110-00-477-6737. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.