Permitted cyclic duration factor

Speed n in min^-1	Frequency f in Hz	Permitted cyclic duration factor cdf_{B_per} in %
Speed n in min^-1	Frequency f in Hz	40 °C, 50 °C	60 °C
0	0	40	35
75	2.5	48	42
150	5	55	48
225	7.5	63	55
300	10	70	61
375	12.5	78	68
450	15	85	74
525	17.5	93	81
600	20	100	87
675	22.5	100	94
≥ 750	25	100	100

	Permitted cyclic duration factor cdf_{B_per} at 40 °C, 50 °C
	Permitted cyclic duration factor cdf_{B_per} at 60 °C
	Thermal breakpoint speed n_{B_th_k}