Timken NA643 Tapered Cone Roller Bearing, 2-3/4" Bore

Timken NA643 Tapered Cone Roller Bearing The Timken NA643 is a precision tapered roller bearing cone designed for heavy-duty applications requiring high load capacity and durability. It is used with a matching cup to form a complete bearing assembly for radial and axial load support. Technical Specifications Brand: Timken Model: NA643 Type: Tapered Roller Bearing Cone Inner Bore Diameter: 2-3/4 in (69.85 mm) Cone Width: 1.875 in (47.63 mm) Outer Diameter: Requires matching cup (typically Timken N series, e.g., N10XX) Material: High-grade alloy steel Design: Tapered roller for combined radial and axial loads Application: Gearboxes, heavy machinery, automotive axles Country of Manufacture: USA Please review pictures carefully and let us know if you have any questions!