PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

311Bearing,ball,annular

Skf Usa Inc. · NSN 3110-00-555-5570 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-555-5570 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-555-5570. Primary manufacturer part number: 311.
Features
  • Bearing,ball,annular — FSC 3110
  • Overall Outside Diameter: 120.00 MILLIMETERS NOMINAL MM
  • Bore Diameter: 55.00 MILLIMETERS NOMINAL MM
  • Style Designator: LOADING GROOVE, NON-SEPARABLE
  • Material: STEEL OVERALL
  • Surface Finish: GROUND
  • Retainer Fabrication Method: PRESSED
  • Internal Fit-Up Designation: STANDARD
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-555-5570, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Skf Usa Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-555-5570
Primary Part Number311
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSkf Usa Inc.
StatusCANCELLED
Overall Outside Diameter120.00 MILLIMETERS NOMINAL MM
Bore Diameter55.00 MILLIMETERS NOMINAL MM
Style DesignatorLOADING GROOVE, NON-SEPARABLE
MaterialSTEEL OVERALL
Surface FinishGROUND
Retainer Fabrication MethodPRESSED
Internal Fit-Up DesignationSTANDARD
Standard Tolerance DesignationABEC NO.1
Bore ShapeSTRAIGHT
Load DirectionRADIAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3110-00-155-9546311SW1 INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
6685-00-739-8447 INTERCHANGEABLE
Indicator,temperature,electrical
5961-00-902-4664 INTERCHANGEABLE
Transistor
1560-00-907-9291 INTERCHANGEABLE
Skin,aircraft
6685-00-981-7812939262R91 INTERCHANGEABLE
Indicator,temperature,electrical
Cnh Industrial America Llc Dba Cnh America
Cross-Reference Index
Part NumberManufacturer
1311X1 General Motors Corp Delco Moraine Ndh Div (USA)
M311CE1TX9 Nsk Corp Bearing Div (USA)
311MQ6B4 Skf Usa Inc. (USA)
72-6972-008 Fairbanks Morse, Llc (USA)
311J Skf Usa Inc. (USA)
311 PRIMARY Skf Usa Inc. (USA)
2251193 PRIMARY Fairbanks Morse, Llc (USA)
771A147-8 Timken Gears & Services Inc. Div Philadelphia Gear (USA)
ST-221 Komatsu American Intl Co (USA)
MT311TF Fag Bearings Corporation (USA)
L-355 Navistar Intl Corp Truck Br Ohio Plant (USA)
2251193 Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco (USA)
1311M Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
311W Timken Co Div the Timken Company (USA)
72-6972-008 Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco (USA)
Related Parts
3110-00-155-9546INTERCHANGEABLE
BEARING,BALL,ANNULAR
311SW1
6685-00-739-8447INTERCHANGEABLE
INDICATOR,TEMPERATURE,ELECTRICAL
5961-00-902-4664INTERCHANGEABLE
TRANSISTOR
1560-00-907-9291INTERCHANGEABLE
SKIN,AIRCRAFT
6685-00-981-7812INTERCHANGEABLE
INDICATOR,TEMPERATURE,ELECTRICAL
939262R91

Frequently Asked Questions

What is NSN 3110-00-555-5570?

NSN 3110-00-555-5570 is a Bearing,ball,annular, manufactured by Skf Usa Inc., classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-555-5570?

NSN 3110-00-555-5570 has 15 cross-referenced part numbers: 1311X1 (General Motors Corp Delco Moraine Ndh Div), M311CE1TX9 (Nsk Corp Bearing Div), 311MQ6B4 (Skf Usa Inc.), 72-6972-008 (Fairbanks Morse, Llc), 311J (Skf Usa Inc.) and 10 more.

What NSN replaces 3110-00-555-5570?

There are 5 known substitutes for 3110-00-555-5570: 3110-00-155-9546, 6685-00-739-8447, 5961-00-902-4664 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 311?

Key specifications for 311: Overall Outside Diameter: 120.00 MILLIMETERS NOMINAL MM; Bore Diameter: 55.00 MILLIMETERS NOMINAL MM; Style Designator: LOADING GROOVE, NON-SEPARABLE; Material: STEEL OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-555-5570 still in active supply?

NSN 3110-00-555-5570 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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