1 Diagram 1 Relubrication interval t f , h 100 000 90 000 100 000 n d m = 50 000 80 000 70 000 150 000 60 000 50 000 200 000 40 000 n d m = 250 000 30 000 20 000 10 000 0 0 40 45 50 55 60 65 70 75 80 85 90 95 100 Operating temperature, °C 51