芬兰 VR集团公司运营的 30 0台电传动内燃机车和 1 1 0台电力机车已全部改用蓝宝石 2号轴承润滑脂 ,以解决在芬兰恶劣的冬季运输条件下机车出现的润滑问题。VR公司原先使用的润滑脂抗雨水冲刷性能不高 ,因此车轮轴承需要频繁地更换润滑剂 ,特别是在机车清洗后或暴露在潮湿的气 The 30 0 electric drive diesel locomotive and 110 electric locomotives operated by the Finnish VR Group have all been converted to sapphire 2 bearing grease to address the locomotive’s lubrication problems under the harsh winter conditions in Finland. The grease originally used by VR was not resistant to rain and washdown, so wheel bearings needed frequent lubricant changes, especially after locomotive cleaning or exposure to damp air