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Separation Systems

Industrial separation systems

Overbelt magnet systems

The most important application for overbelt magnet systems is ferrous metal separation from materials on conveyor belts. To do this, they are installed over the conveyor belt. The magnetic system lifts the ferrous particles from the material flow passing underneath and then drops them into a collection bin when they leave the magnetic field.

The working surface of the magnets is protected by a stainless steel plate which absorbs any wear. This type of ferrous separation system is often used in industry to prevent ferrous particles damaging production machines such as shredders. A growing application area is the recycling industry often in combination with Eddy Current non-ferrous metal separators. The overbelt magnet systems are supplied in two main types, one using permanent magnets and the other electromagnets. Last mentioned for effective field depth > 500 mm.

This type of ferrous separation system is equipped with a powerful permanent magnet.
The standard drive for the overbelt magnet system (up to and including the 320 series) is a drum motor. On the 400 and 500 series, the standard drive is by means of a shaft-mounted reduction motor. If required, the belt on the 220 series can also be equipped with the same
sort of motor (add "/21" to the article number). The overbelt systems are equipped with a belt tensioner and because of the concave shape of the drums, the belt is self centring. The belt is made from synthetic rubber with vulcanised idlers. The electrical connections conform
to standard IP 54 or, if required, IP 65 and the standard power supply required is 3 x 380 V 50 Hz. Systems are available for other voltages if necessary. Some types can be supplied in a 'stretch' version. In these, a transport pole is added as a continuation of the main pole. This transport pole produces a change in the magnetic field which causes the ferrous particles on the belt to move so that any non-ferrous particles which had been hold by the iron articles can drop back into the material flow. This means there are fewer impurities in the ferrous collection. The 'stretch' versions can only be installed with the belt running in the same direction as the conveyor belt. In the 400 and 500 series, the rubber conveyor belt has a wear-resistant layer (Correx blue 45° shore) between the idlers.

Overbelt magnet system mounted transversely over the conveyor belt.

Overbelt magnet system mounted longitudinally over the end roller of the conveyor belt.

Effective depth of magnetic field - overband magnets

Article no.	Bar Ø5x25	Bar Ø5x75	Nut M16
BM 28.001 bis BM 28.003	165	225	130
BM 28.101 bis BM 28.111	255	370	180
BM 28.130 bis BM 28.140	260	380	195
BM 28.010 bis BM 28.014	295	430	225
BM 28.020 bis BM 28.024	315	460	240
BM 28.030 bis BM 28.035	335	480	250
BM 28.040 bis BM 28.047	360	500	275

Overbelt magnet systems with ceramic magnet system

Series 135

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.001	135	955	520	310	130	0,55	153
BM 28.002	135	1155	720	310	130	0,55	197
BM 28.003	135	1355	920	310	130	0,55	242

*Magnet dimensions

Series 220

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.101	220	1050	430	505	180	1,1	335
BM 28.102	220	1150	530	505	180	1,1	375
BM 28.103	220	1250	635	505	180	1,1	420
BM 28.104	220	1355	735	505	180	1,1	470
BM 28.105	220	1455	835	505	180	1,1	515
BM 28.106	220	1555	935	505	180	1,1	560
BM 28.107	220	1655	1040	505	180	1,1	600
BM 28.108	220	1755	1140	505	180	1,1	650
BM 28.109	220	1860	1250	505	180	1,1	695
BM 28.110	220	1960	1350	505	180	1,1	740
BM 28.111	220	2060	1450	505	180	1,1	785
BM 28.130	220	1050	430	810	180	1,5	470
BM 28.131	220	1150	530	810	180	1,5	545
BM 28.132	220	1250	635	810	180	1,5	620
BM 28.133	220	1355	735	810	180	1,5	695
BM 28.134	220	1455	835	810	180	1,5	765
BM 28.135	220	1555	935	810	180	1,5	840
BM 28.136	220	1655	1040	810	180	1,5	915
BM 28.137	220	1755	1140	810	180	1,5	990
BM 28.138	220	1860	1250	810	180	1,5	1060
BM 28.139	220	1960	1350	810	180	1,5	1140
BM 28.140	220	2060	1450	810	180	1,5	1210

*Magnet dimensions

Series 320

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.010	320	1705	835	610	247	2,2	734
BM 28.011	320	1910	1040	610	247	2,2	891
BM 28.012	320	2120	1250	610	247	2,2	1048
BM 28.013	320	2320	1450	610	247	2,2	1250
BM 28.014	320	2520	1650	610	247	2,2	1363
BM 28.020	320	1705	835	810	247	2,2	930
BM 28.021	320	1910	1040	810	247	2,2	1136
BM 28.022	320	2120	1250	810	247	2,2	1342
BM 28.023	320	2320	1450	810	247	2,2	1548
BM 28.024	320	2520	1650	810	247	2,2	1754

*Magnet dimensions

Series 400

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.030	400	1885	835	810	350	2,2	1336
BM 28.031	400	2090	1040	810	350	2,2	1622
BM 28.032	400	2300	1250	810	350	2,2	1789
BM 28.033	400	2500	1450	810	350	2,2	2194
BM 28.034	400	2700	1650	810	350	2,2	2491
BM 28.035	400	2900	1850	810	350	2,2	2767

*Magnet dimensions

Series 500

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.040	500	2085	835	900	410	2,2	1758
BM 28.041	500	2290	1040	900	410	2,2	2135
BM 28.042	500	2500	1250	900	410	2,2	2512
BM 28.043	500	2700	1450	900	410	2,2	2819
BM 28.044	500	2900	1650	900	410	3,0	3266
BM 28.045	500	3100	1850	900	410	3,0	3642
BM 28.046	500	3300	2050	900	410	3,0	4019
BM 28.047	500	3500	2250	900	410	3,0	4369

*Magnet dimensions

Overbelt magnet systems with neodymium magnet system

Effective depth of magnetic field - overbelt magnets

Article no.	Bar Ø5x25	Bar Ø5x75	Nut M16
BM 28.070/ND bis BM 28.074/ND	323	408	256
BM 28.075/ND bis BM 28.079/ND	418	541	313

Article no.	Dia. drum	B	E*	G*	H*	Power motor	Weight
	mm	mm	mm	mm	mm	kW	kg
BM 28.070/ND	215	1453	800	483	161,5	2,2	660
BM 28.071/ND	215	1653	1000	483	161,5	2,2	750
BM 28.072/ND	215	1853	1200	483	161,5	2,2	840
BM 28.073/ND	215	2053	1400	483	161,5	2,2	930
BM 28.074/ND	215	2253	1600	483	161,5	2,2	1020
BM 28.075/ND	215	1453	800	843	161,5	2,2	915
BM 28.076/ND	215	1653	1000	843	161,5	2,2	1065
BM 28.077/ND	215	1853	1200	843	161,5	2,2	1215
BM 28.078/ND	215	2053	1400	843	161,5	2,2	1365
BM 28.079/ND	215	2253	1600	843	161,5	2,2	1515

*Magnet dimensions

Overbelt magnet systems multipole for longitudinally discharge

400 execution:
drive: geared motor, manufacturer SEW, power: 2,2 - 4 kW (depending on model)

Article no.	Dia. drum	A	B
	mm	mm	mm
BM 28.400/LD	400	800	1000
BM 28.401/LD	400	800	1200
BM 28.402/LD	400	1000	1000
BM 28.403/LD	400	1000	1200
BM 28.404/LD	400	1000	1400
BM 28.405/LD	400	1200	1200
BM 28.406/LD	400	1200	1400
BM 28.407/LD	400	1200	1600
BM 28.408/LD	400	1400	1400
BM 28.409/LD	400	1400	1600
BM 28.410/LD	400	1400	1800
BM 28.411/LD	400	1600	1600
BM 28.412/LD	400	1600	1800
BM 28.413/LD	400	1600	2000

500 execution:
drive: geared motor, manufacturer SEW, power: 3 - 5,5 kW (depending on model)

Article no.	Dia. drum	A	B
	mm	mm	mm
BM 28.500/LD	500	800	1000
BM 28.501/LD	500	800	1200
BM 28.502/LD	500	1000	1000
BM 28.503/LD	500	1000	1200
BM 28.504/LD	500	1000	1400
BM 28.505/LD	500	1200	1200
BM 28.506/LD	500	1200	1400
BM 28.507/LD	500	1200	1600
BM 28.508/LD	500	1400	1400
BM 28.509/LD	500	1400	1600
BM 28.510/LD	500	1400	1800
BM 28.511/LD	500	1600	1600
BM 28.512/LD	500	1600	1800
BM 28.513/LD	500	1600	2000