PartsTable
Technical Data Sheet
Download PDF

121750 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

121750: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: PLASTIC VINYL FIRST POSITION CONDUCTOR OVERALL, hole_diameter: 4.2 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 30.0 INCHES MAXIMUM IN, conductor_form: STRANDED ALL CONDUCTORS, overall_length: 22.1 INCHES MAXIMUM IN, style_designator: NON-CIRCULAR. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-142-4360, 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→ 121750
NSN: 3110-00-142-4360
NIINs: 001424360, 003014548, 010465341, 011507981, 016048577, 016140865
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 72582 — ROLLS-ROYCE SOLUTIONS AMERICA INC (USA)
SPECIFICATIONS
materialPLASTIC VINYL FIRST POSITION CONDUCTOR OVERALL
hole_diameter4.2 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width30.0 INCHES MAXIMUM IN
conductor_formSTRANDED ALL CONDUCTORS
overall_length22.1 INCHES MAXIMUM IN
style_designatorNON-CIRCULAR
bolt_hole_quantity4
conductor_quantity2
round_conductor_size10.0 AWG ALL CONDUCTORS
end_item_identificationDRUM ASSEMBLY, FW
cross-sectional_shape_styleFLAT
part_name_assigned_by_controlling_agencyFIXED CONNECTOR GASKET
NSN3110-00-142-4360
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121750 · 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
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
CONE WIDTH: 1.4440 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.1250 INCHES NOMINAL IN
•
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
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
CONE WIDTH1.4440 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMRAP BUFFALO MK2A2
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.1250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
258803Reference document
Same NSN cross-reference
Reference document — Secondary reference
15C-2-14Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
P4320Reference document
Same NSN cross-reference
Reference document — Secondary reference
557SReference document
Same NSN cross-reference
Reference document — Secondary reference
1B3917Reference document
Same NSN cross-reference
Reference document — Secondary reference
8236-557SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 121750?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 121750?
121750 is a CONE AND ROLLERS,TAPERED ROLLER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 121750?
There are 8 known substitutes for 121750: 258803, 15C-2-14, P4320 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121750?
121750 is cataloged in the U.S. Government catalog under NSN 3110-00-142-4360. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 121750

✓ 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.