PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CYRB77-2Bearing,ball,annular

Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation · NSN 3110-00-498-6552 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-498-6552 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-498-6552. Primary manufacturer part number: CYRB77-2.
Features
  • Bearing,ball,annular — FSC 3110
  • Bore Diameter: 0.1873 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
  • Bore Shape: STRAIGHT
  • Internal Clearance: 0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
  • Load Direction: RADIAL
  • Retainer Fabrication Method: PRESSED
  • Lubrication Material: GREASE
  • Surface Finish: GROUND
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Corrosion Resisting Shield construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-498-6552, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-498-6552
Primary Part NumberCYRB77-2
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSchaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
StatusACTIVE
Bore Diameter0.1873 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
Bore ShapeSTRAIGHT
Internal Clearance0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
Load DirectionRADIAL
Retainer Fabrication MethodPRESSED
Lubrication MaterialGREASE
Surface FinishGROUND
Shield Quantity2
Lubrication Material Document and ClassificationMIL-G-25013 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL CORROSION RESISTING SHIELD
MaterialSTEEL COMP 440C BALL
MaterialSTEEL CORROSION RESISTING RETAINER
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE BALL
MaterialSTEEL COMP 440C OUTER RING
MaterialSTEEL COMP 440C INNER RING
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE INNER RING
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
Overall Outside Diameter0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-364-9543ST3M454-3L6 INTERCHANGEABLE
Screw,close Tolerance
The Boeing Company Div Defense
3110-00-679-1263 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
VSR3SS5G25 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
CYRB77-2 PRIMARY Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
SR3SS5G59 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
CYRB77-2 PRIMARY New Hampshire Ball Bearings Inc Div Precision Division (USA)
CYRB77-2 Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA)
CYRB77-2 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
SR35PPK58 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
Related Parts
5305-00-364-9543INTERCHANGEABLE
SCREW,CLOSE TOLERANCE
ST3M454-3L6
3110-00-679-1263INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-498-6552?

NSN 3110-00-498-6552 is a Bearing,ball,annular, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-498-6552?

NSN 3110-00-498-6552 has 7 cross-referenced part numbers: VSR3SS5G25 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), CYRB77-2 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), SR3SS5G59 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), CYRB77-2 (New Hampshire Ball Bearings Inc Div Precision Division), CYRB77-2 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc) and 2 more.

What NSN replaces 3110-00-498-6552?

There are 2 known substitutes for 3110-00-498-6552: 5305-00-364-9543, 3110-00-679-1263. Verify interchangeability with system specifications before substitution.

What are the specifications of CYRB77-2?

Key specifications for CYRB77-2: Overall Width: 0.1950 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN; Bore Diameter: 0.1873 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN; Special Features: STABILIZED FOR OPERATION AT 450 DEG F,LUBRICANT AMOUNT 30 CMM PORM 20PCT DEGF; Bore Shape: STRAIGHT. 21 total characteristics are documented in the Federal Logistics Information System.

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