PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

663557R91Cone and Rollers,tapered Roller

Komatsu America Corporation · NSN 3110-00-727-6901 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-727-6901 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-727-6901. Primary manufacturer part number: 663557R91.
Features
  • Cone and Rollers,tapered Roller — FSC 3110
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Cone Corner Radius: 0.1400 INCHES NOMINAL IN
  • Cone Width: 0.7800 INCHES NOMINAL IN
  • Bore Diameter: 1.6250 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Style Designator: NORMAL ANGLE
  • 43 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Cone and Rollers,tapered Roller, cataloged under National Stock Number 3110-00-727-6901, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Komatsu America Corporation. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 43 commercial cross-references from 33 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-727-6901
Primary Part Number663557R91
Item NameCone and Rollers,tapered Roller
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerKomatsu America Corporation
StatusCANCELLED
Standard Tolerance DesignationAFBMA CLASS 2
Cone Corner Radius0.1400 INCHES NOMINAL IN
Cone Width0.7800 INCHES NOMINAL IN
Bore Diameter1.6250 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorNORMAL ANGLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4320-00-447-103361116 INTERCHANGEABLE
Seal Assembly,oil
Eaton Aerospace, Llc Dba Jackson South
5961-00-455-4441 INTERCHANGEABLE
Transistor
3040-00-490-076711635963 INTERCHANGEABLE
Cam,control
Army, United States Department of the Dba Rock Island Arsenal Jmtc
5985-00-557-101161116 INTERCHANGEABLE
Waveguide Assembly
Waveline Inc
5975-00-653-9164ASC-SD-3 INTERCHANGEABLE
Drawer,standardized Components C
Custom Production Mfg., Inc. Dba Custom Production Manufacturing Inc
3110-00-690-8923LM501349-LM501310 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
3120-01-073-774112267774 INTERCHANGEABLE
Parts Kit,bearing Replacement,me
The Timken Corporation
3110-01-075-5853663557R91 INTERCHANGEABLE
Bearing
Dressta North America Ltd
6680-01-081-778140318 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5133-01-095-6724 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
663557R91 Komatsu America Corporation (USA)
067-65-685411 Foremost Industries Lp Div Industries Ltd (CAN)
LM501349 Pacemaker Yacht Co
1M501349 The Timken Corporation (USA)
550433-1 Dana Corp Spicer Transmission Div (USA)
LM501349MN The Timken Corporation (USA)
B7A4221A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
4254700-0 Kalmar AC Inc (USA)
4254700 Agco Corp Parts Opn (USA)
1937771 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
B7A4221A Ford Motor Company (USA)
3156052 Kenosha Automotive Plant Sub of American Motors Corp (USA)
3110007276901 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
230448 Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling (USA)
FF-B-187/01-223 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3L56052 Jered Brown Bros Inc Liberty Works the (USA)
FF-B-187/01 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
4254700 Allis-Chalmers Corp (USA)
13-2-155594 Terex Reedrill Dba Reedrill Texoma Div Terex Mining (USA)
663557R91 International Harvester Co Agricultural Equipment Div (USA)
Related Parts
4320-00-447-1033INTERCHANGEABLE
SEAL ASSEMBLY,OIL
61116
5961-00-455-4441INTERCHANGEABLE
TRANSISTOR
3040-00-490-0767INTERCHANGEABLE
CAM,CONTROL
11635963
5985-00-557-1011INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
61116
5975-00-653-9164INTERCHANGEABLE
DRAWER,STANDARDIZED COMPONENTS C
ASC-SD-3
3110-00-690-8923INTERCHANGEABLE
BEARING,ROLLER,TAPERED
LM501349-LM501310
3120-01-073-7741INTERCHANGEABLE
PARTS KIT,BEARING REPLACEMENT,ME
12267774
3110-01-075-5853INTERCHANGEABLE
BEARING
663557R91
6680-01-081-7781INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40318
5133-01-095-6724INTERCHANGEABLE
DRILL,TWIST
6150-01-261-4957INTERCHANGEABLE
LEAD,STORAGE BATTERY
40318
2530-01-362-3391INTERCHANGEABLE
PUMP ASSEMBLY,POWER STEERING,VEH
26003871

Frequently Asked Questions

What is NSN 3110-00-727-6901?

NSN 3110-00-727-6901 is a Cone and Rollers,tapered Roller, manufactured by Komatsu America Corporation, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-727-6901?

NSN 3110-00-727-6901 has 43 cross-referenced part numbers: 663557R91 (Komatsu America Corporation), 067-65-685411 (Foremost Industries Lp Div Industries Ltd), LM501349 (Pacemaker Yacht Co), 1M501349 (The Timken Corporation), 550433-1 (Dana Corp Spicer Transmission Div) and 38 more.

What NSN replaces 3110-00-727-6901?

There are 12 known substitutes for 3110-00-727-6901: 4320-00-447-1033, 5961-00-455-4441, 3040-00-490-0767 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 663557R91?

Key specifications for 663557R91: Standard Tolerance Designation: AFBMA CLASS 2; Cone Corner Radius: 0.1400 INCHES NOMINAL IN; Cone Width: 0.7800 INCHES NOMINAL IN; Special Features: DUTY CLASS LM SERIES. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-727-6901 still in active supply?

NSN 3110-00-727-6901 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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