Drive Pulley

Overviews

The head pulley is located at the point that the conveyor offloads, known as the unloading end of the belt conveyor. Because it drives the entire system, it usually requires a rough coat covering the outer surface to increase the traction of its belt. The head pulley usually has the largest diameter of all the pulleys. Sometimes, a system can have more than one pulley as a drive pulley. The discharging end pulley, usually the largest diameter of the driving roller, is called the head pulley. This is located at the loading end of the belt conveyor. Sometimes it comes with a wing shape to clean the belt by letting material fall aside to the support parts. In a simple belt conveyor setup, the tail pulley will be mounted on a usually slotted rail to allow belt tensioning. In other belt conveying systems as we shall see, tensioning of the belt is left to another roller called the take-up roller.

Drive pulley parameters

B	D	A	L	L1	L2	K	M	N	Q	P	H	h	h1	d	b	ds	Rolling shaft model	Torque allowed(kg*mm)
																		Smooth surface pulley	Rubber Coated pulley
500	500	850	600	1097	505.5	115	70	-	280	340	33	33	60	55	16	27	1312	16300	25000
600	500	100	750	1280	588.5	135	90	-	350	210	33	33	76	70	20	27	1316	21200	32600
	630																	29600	45400
800	500	1300	950	1580	738.5	135	90	-	350	410	33	33	76	70	20	27	1316	26200	40100
	630			1661	771	175	130	80	380	460	33	33	95	90	25		3520	36700	56100
	800																	55900	85500
1000	630	1500	1150	1861	871	175	130	80	380	460	33	33	95	90	25	27	3520	45700	70100
	800			1945	900	215	160	90	440	530	53	53	119	110	32	34	3524	69600	106800
	1000			2020	930	255	170	100	480	570	53	53	140	130	36		3528	-	177500
1200	630	1750	1400	2195	1025	215	160	90	440	530	53	53	119	110	32	34	3524	54900	84000
	800																	83700	128100
	1000			2270	1055	255	170	100	480	570	53	53	140	130	36		3528	-	213000
	1250			2305	1065	275	180	110	540	630	53	53	161	150	40		3532	-	300000
1400	800	2000	1600	2445	1150	215	160	90	440	530	63	63	119	110	32	34	3524	97600	149200
	1000			2555	1190	275	180	110	540	630	63	63	161	150	40		3532	-	249250
	1250																	-	350000
	1400			2635	1200	335	200	120	590	680	63	63	181	170		40	3536	-	470000

Minimum drum diameter under stable conditions

Diameter of drive pulley	Minimum diameter
	Maximum tension utilization
	>60%~100%			>30%~60%			≤30%
	Pulley mode			Pulley mode			Pulley mode
	A	B	C	A	B	C	A	B	C
500	500	400	315	400	315	250	315	315	250
630	630	500	400	500	400	315	400	400	315
800	800	630	500	630	500	400	500	500	400
1000	1000	800	630	800	630	500	630	630	500
1250	1250	1000	800	1000	800	630	800	800	630
1500	1600	1250	1000	1250	1000	800	1000	1000	800

Delivery