PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2-21723Bearing,sleeve

Rockford Powertrain Inc Div Powertrain Rockford, Inc. · NSN 3120-01-155-4297 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-155-4297 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-155-4297. Primary manufacturer part number: 2-21723.
Features
  • Bearing,sleeve — FSC 3120
  • 3 verified cross-references
  • Primary manufacturer: Rockford Powertrain Inc Div Powertrain Rockford, Inc.
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-155-4297, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Rockford Powertrain Inc Div Powertrain Rockford, Inc.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing,sleeve
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersOshkosh Defense Llc (CAGE 75Q65); Rockford Powertrain Inc Div Powertrain Rockford, Inc. (CAGE 77873); Oshkosh Corp (CAGE 45152)
Technical Specifications
ParameterValue
NSN3120-01-155-4297
Primary Part Number2-21723
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRockford Powertrain Inc Div Powertrain Rockford, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2840-00-092-1849221723 INTERCHANGEABLE
Pad,anti-Chafing
Curtiss-Wright Controls, Inc. Div Actuation Division
5935-00-132-2467ES3649-05 INTERCHANGEABLE
Connector,plug,electrical
Drs Sustainment Systems Inc
6125-00-817-9868 INTERCHANGEABLE
Winding,motor-Generator Field
3110-01-622-3957221723 INTERCHANGEABLE
Cone,tapered Roller Bearing
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
Cross-Reference Index
Part NumberManufacturer
2AT299 Oshkosh Defense Llc (USA)
2-21723 PRIMARY Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA)
2AT299 Oshkosh Corp (USA)
Related Parts
2840-00-092-1849INTERCHANGEABLE
PAD,ANTI-CHAFING
221723
5935-00-132-2467INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ES3649-05
6125-00-817-9868INTERCHANGEABLE
WINDING,MOTOR-GENERATOR FIELD
3110-01-622-3957INTERCHANGEABLE
CONE,TAPERED ROLLER BEARING
221723

Frequently Asked Questions

What is NSN 3120-01-155-4297?

NSN 3120-01-155-4297 is a Bearing,sleeve, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-155-4297?

NSN 3120-01-155-4297 has 3 cross-referenced part numbers: 2AT299 (Oshkosh Defense Llc), 2-21723 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.), 2AT299 (Oshkosh Corp).

What NSN replaces 3120-01-155-4297?

There are 4 known substitutes for 3120-01-155-4297: 2840-00-092-1849, 5935-00-132-2467, 6125-00-817-9868 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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