Drums driving for loading cranes

Drums are driving
Table 1 the Sizes of drums for conveyors of general purpose, mm.

Tape width	Drum feedwell length	Normal number of outer diameters of a drum
400	500	160	200	250	315	400	500	630	-
500	600	160	200	250	315	400	500	630	800
650	750	200	250	315	400	500	630	800	1000
800	950	200	250	335	400	500	630	700	1000
1000	1150	250	315	400	500	630	800	1000	1250
1200	1400	400	500	630	800	1000	1250	1600	-
1400	1600	400	500	630	800	1000	1250	1600	1600
1600	1800	400	500	630	800	1000	1250	1600	-
1800	2000	400	500	630	800	1000	1250	1600	2000
2000	2200	500	630	800	1000	1250	1600	2000	2500
2500	2800	630	800	1000	1250	1600	2000	2500	-