Wälzlager und Antriebseinheit für ein Fahrzeug

Details

Veröffentlichungs-Nr.

EP4737752

Anmeldetag

31. Mai 2024

Veröffentlichung

2. Januar 2025

Rechtsraum

EP

Abstract

A rolling bearing (100) supports a rotation shaft of a vehicle drive unit. The rolling bearing includes an inner ring (10), an outer ring (20), and a rolling element (30) which are made of steel subjected to quenching and tempering. Each of the inner ring, the outer ring, and the rolling element has a rolling surface (10da, 20ca, 30a). A dislocation density of retained austenite at a rolling surface superficial layer of at least one of the inner ring and the outer ring is 2.5×10¹⁴ m^-2 or more and 1.0×10¹⁷ m^-2 or less.

Anmelder

Firma

NTN Corporation

Land

🇯🇵 Japan