No of operating days in a year
$$ hoist_{days} = 250 \: days $$ Service life in years
$$ hoist_{years} = 25 \: years $$

Total service cycles

Hoist motion cycles per day

No. of hook strokes per cycle
$$ hook_{cycles} = 4 \: $$ Hook travel
$$ hook_{travel} = 4 \: m $$ Operating hours per day
$$ hours_{operating} = 8 \: h $$ Hoist speed
$$ v_{hoist} = 5 \: m / min $$

Hoist motion hours per day