Electrically switched electro lifting magnet WL1811

handlingelectromagnetic

Product overview
The WL1811 is a DC holding electromagnet designed to attract and hold ferromagnetic parts when energized. It features an enameled copper coil wound on an iron core housed in a steel casing. Available in round, square, flat or custom shapes with holding forces from a few newtons to several thousand newtons. Typical nominal voltages: 6 V, 12 V, 24 V and 48 V DC. Optional finishes and accessories include waterproofing, high-temperature coils, anti-corrosion coating, custom lead lengths, connectors and mounting holes. Units can be specified for continuous or intermittent duty for use in industrial automation, robotics, security and machine tools.

How it operates

• Apply DC voltage to the copper winding.
• Current flows through the coil and magnetizes the iron core.
• The housing channels the magnetic flux to the contact surface and the circuit closes through the steel workpiece.
• The resulting attraction produces a holding force; removing power releases the load.
• Some variants use low-residual-magnetism designs or demagnetizing circuits for faster, repeatable release.

Main features

• High magnetic holding force for size.
• Low power consumption relative to holding capacity.
• Fast switching and consistent repeatability.
• Compact footprint for restricted mounting spaces.
• Customizable voltages, holding capacities and dimensions.
• Optional waterproofing and anti-corrosion surface treatments.

Industrial applications

• Factory automation: fixture and positioning for assembly, welding, machining and inspection.
• Robotics: end-effectors for picking and placing steel parts.
• Packaging and material handling: temporary positioning and transfer.
• Medical and laboratory instruments requiring controlled magnetic clamping.
• Security systems: electromagnetic locks, access control and fire door holding.
• Fixtures, CNC machines, semiconductor handling and automated storage systems.

Advantages and disadvantages

• Advantages: strong holding force, rapid on/off control, compact design, simple electronic control and customization options.
• Disadvantages: requires continuous power to hold (unless alternate design used), holding force reduced by air gaps/uneven or contaminated surfaces, potential overheating if used beyond specified duty cycle without thermal management.

Troubleshooting / common issues

• Weak holding force: verify supply voltage, clean and flatten contact surfaces, remove air gaps and inspect coil condition.
• No magnetic force: check wiring, connectors, fuses, coil continuity and power supply output.
• Overheating: confirm duty cycle rating, improve ventilation or use continuous-duty variant.
• Slow release / residual magnetism: consider demagnetization circuits or low-residual designs.
• Noise or vibration: inspect mounting hardware, alignment and contact surfaces.
• Intermittent operation: check for loose terminals, damaged cables and stable voltage regulation.

Technical datasheet (excerpt)
WL1811 DC Holding Electromagnet Products Data Sheet
Product name: DC Holding Electromagnet
Model: WL1811
Size: Ø18 x H11
Holding Force: 30 N
Voltage: DC 12V/24V
Power: 43 W
Duty Cycle: 10%
Lead wire: bottom edge out 25cm or customized
Insulation Class: B
Hi-Pot test: AC750V/2S
Service Life: >500,000 cycles
Lead time: 3~5 days if in stock
Sample Order: Acceptable
MOQ: 200 PCS
Warranty: 2 Years
Action Form: Energise to release
Surface: Electroplating (Zn Coating)
Install thread size: M5 x H19
Material: steel & enameled wire
N.W.: 168 g
Origin: Dongguan, Guangdong
Certificate: CE/ROHS

Technical specifications

• Model: WL1811
• Product type: DC Holding Electromagnet
• Size: Ø18 x H11
• Holding force: 30 N
• Voltage options: DC 12V / 24V (typical; 6V and 48V also commonly available)
• Power: 43 W
• Duty cycle: 10% (continuous-duty models available)
• Insulation class: B
• Hi-pot: AC 750V / 2s
• Service life: >500,000 cycles
• Surface: Electroplating (zinc coating)
• Mounting thread: M5 x H19
• Lead wire: standard 25 cm bottom exit (customizable)
• Material: steel housing and enameled copper wire
• Net weight: 168 g
• Certificates: CE, RoHS