Magnetic head pulley for conveyor separation PAP(N)

In brief

• The PAP(N) magnetic head pulley is mounted at the discharge end of a conveyor to automatically remove ferrous contaminants from the conveyor belt.
• It is used in mining and quarrying, cement plants, recycling and the food processing industry.
• It has ferrite or neodymium magnets over 360° and a 304L stainless steel shell, with no power consumption.

food processing, permanent magnet, separation

• Applications
• Operating principles
• Operating recommendations
• General characteristics
• Case studies

Applications

The PAP(N) magnetic head pulley is used in several sectors:

• Mining & Quarrying – Removal of metal fragments to protect crushers
• Cement plants – Protection of the grinding process
• Recycling – Separation of ferrous/non-ferrous fractions
• Food processing industry: Food safety through removal of tramp metal

Protect your industrial equipment with our permanent magnet magnetic head pulley! Automatically remove ferrous contaminants from your belt conveyors and ensure the quality of your finished products.

Operating principles

Operating principle of the PAP(N) magnetic head pulley:

Fitted with high-performance neodymium magnets over 360°, it generates a strong magnetic field that passes through the conveyor belt.

Automatic process:

• Capture of ferromagnetic particles, which are held against the belt
• Transport under the pulley, away from the main discharge zone
• Automatic discharge into the collection chute

This magnetic separation on the conveyor ensures continuous protection of your industrial equipment without operator intervention.

Operating recommendations

Recommendations from our Lenoir-Mec experts:

• Optimal positioning: Install the magnetic head pulley at the discharge end with a minimum drop height of 300mm to ensure effective separation of ferrous contaminants from the main flow.
• Belt speed: Keep the conveying speed between 1 and 3 m/s. Excessive speed can reduce the capture efficiency for the finest ferromagnetic particles.
• Preventive maintenance: Regularly inspect the magnetic bars and the cleaning mechanism for any signs of saturation or wear.
• Technical installation: Provide a collection system (chute, bin) under the magnetic discharge zone.

General characteristics

Characteristics of the Lenoir-Mec PAP(N) magnetic head pulley:

• A permanent magnetic circuit based on high-performance ferrite or neodymium magnets.
• A high-permeability steel yoke for a concentrated magnetic field.
• A 304L stainless steel tubular shell providing robustness and hygiene.
• An active magnetic zone over 360°, covering the entire circumference of the pulley.

Advantages

• Magnetization guaranteed for life
• Zero power consumption
• Easy maintenance: quick and simple cleaning

Services

• Industrial commissioning assistance
• Spare parts stock
• Fast after-sales service response
• Installed base monitoring and periodic performance checks

Frequently asked questions

What is the PAP(N) magnetic head pulley used for?

It automatically removes ferrous contaminants from belt conveyors. It is used in mining and quarrying, cement plants, recycling and the food processing industry.

How does the PAP(N) pulley work?

Fitted with neodymium magnets over 360°, it generates a magnetic field that passes through the belt. Ferromagnetic particles are held against the belt and then drop automatically into the collection chute, away from the main discharge zone.

What materials make up the PAP(N) pulley?

It comprises a magnetic circuit with ferrite or neodymium magnets, a high-permeability steel yoke and a 304L stainless steel tubular shell providing robustness and hygiene.

How should the PAP(N) pulley be installed?

Install it at the discharge end with a minimum drop height of 300 mm and provide a collection chute or bin under the discharge zone. The recommended belt speed is 1 to 3 m/s.

What maintenance does the PAP(N) pulley require?

Regularly inspect the magnetic bars and the cleaning mechanism for any signs of saturation or wear.

Technical data

Drum Ø (mm)	Belt speed (m/s)	Product height capacity (mm)
250 (série 25)	1	50
315 (série 31)	1,5	70
400 (série 40)	1,75	100
500 (série 50)	1,75	150
630 (série 63)	2	180
800 (série 80)	2,5	220

Model	Weight (kg)	Belt width (mm)
PAP(N) 25/20	38	200
PAP(N) 25/30	55	300
PAP(N) 25/40	75	400
PAP(N) 25/50	92	500
PAP(N) 25/65	120	650
PAP(N) 25/80	145	800
PAP(N) 25/100	170	1000
PAP(N) 25/120	195	1200
PAP(N) 31/30	95	300
PAP(N) 31/40	130	400
PAP(N) 31/50	140	500
PAP(N) 31/60	190	600
PAP(N) 31/65	195	650
PAP(N) 31/80	230	800
PAP(N) 31/100	280	1000
PAP(N) 31/120	320	1200
PAP(N) 31/140	360	1400
PAP(N) 40/40	200	400
PAP(N) 40/50	220	500
PAP(N) 40/60	270	600
PAP(N) 40/65	280	650
PAP(N) 40/80	330	800
PAP(N) 40/100	420	1000
PAP(N) 40/120	520	1200
PAP(N) 40/140	670	1400
PAP(N) 50/50	390	500
PAP(N) 50/60	490	600
PAP(N) 50/65	500	650
PAP(N) 50/80	620	800
PAP(N) 50/100	710	1000
PAP(N) 50/120	850	1200
PAP(N) 50/140	1000	1400
PAP(N) 63/60	680	600
PAP(N) 63/65	700	650
PAP(N) 63/80	800	800
PAP(N) 63/100	980	1000
PAP(N) 63/120	1150	1200
PAP(N) 63/140	1450	1400
PAP(N) 63/160	1850	1600
PAP(N) 80/80	1400	800
PAP(N) 80/100	1750	1000
PAP(N) 80/120	2050	1200
PAP(N) 80/140	2200	1400