Description
Powerful Round DC Electromagnet for Metal Holding, Lifting, Robotics, Automation, Door Lock & DIY Projects
The Round Suction Cup Electromagnet is a compact DC-powered holding magnet designed to attract and hold ferromagnetic metal objects when electrical power is applied.
It is suitable for robotics, automation, electronic locking, lifting mechanisms, metal holding fixtures, sorting systems, DIY machines, Arduino-controlled projects and industrial prototypes.
এই Round Suction Cup Electromagnet DC power দিলে iron/steel surface শক্তভাবে ধরে রাখতে পারে। Robotics, automation, magnetic lock, metal holding, lifting mechanism, sorting system এবং DIY project-এ এটি ব্যবহার করা যায়।
This product is available in 4 different size, voltage and holding-force variants, so you can select the correct model according to your project requirement.
Available Variants / ভ্যারিয়েশন
✅ KK-P20/15 – DC 6V – Approx. 3kg Holding Force
✅ KK-P25/20 – DC 5V – Approx. 8kg Holding Force
✅ KK-P30/25 – DC 12V – Approx. 15kg Holding Force
✅ KK-P40/20 – DC 12V – Approx. 30kg Holding Force
⚠️ Please select the correct voltage, size and holding-force variant before ordering.
Variant Details / ভ্যারিয়েন্ট ডিটেইলস
KK-P20/15
• Model: KK-P20/15
• Rated Voltage: DC 6V
• Rated Holding Force: Approx. 3kg
• Compact Size: Suitable for small mechanisms and lightweight projects
KK-P25/20
• Model: KK-P25/20
• Rated Voltage: DC 5V
• Rated Holding Force: Approx. 8kg
• Recommended Use: Medium holding and compact automation projects
KK-P30/25
• Model: KK-P30/25
• Rated Voltage: DC 12V
• Rated Holding Force: Approx. 15kg
• Recommended Use: Robotics, magnetic holding and automation mechanisms
KK-P40/20
• Model: KK-P40/20
• Rated Voltage: DC 12V
• Rated Holding Force: Approx. 30kg
• Recommended Use: Higher-force metal holding and lifting applications
Product Highlights / প্রধান বৈশিষ্ট্য
✅ Powerful DC suction cup electromagnet
✅ Available in 4 different variants
✅ Holding-force options from approximately 3kg to 30kg
✅ Simple two-wire DC operation
✅ Magnetic force activated when power is applied
✅ Compact round metal construction
✅ Suitable for robotics and automation projects
✅ Can be controlled using relay, MOSFET or suitable switching circuit
✅ Useful for metal holding, locking and lifting mechanisms
✅ Easy integration into Arduino, ESP32 and industrial control projects
Applications / ব্যবহার ক্ষেত্র
• Robotic metal lifting mechanism
• Electromagnetic door lock project
• Automatic metal holding fixture
• Pick-and-place prototype
• Metal sorting machine
• Arduino automation project
• Robot arm end effector
• Smart lock project
• Industrial automation prototype
• CNC / mechanical holding application
• DIY lifting mechanism
• Electronic controlled magnetic clamp
• Educational engineering project
Package Includes / প্যাকেজে যা থাকছে
✅ 1 × Round Suction Cup Electromagnet
The exact model, voltage and holding force depend on the selected variation.
⚠️ Power supply, relay module, MOSFET driver, controller, mounting hardware and metal plate are not included unless mentioned separately.
Technical Specifications / স্পেসিফিকেশন
• Product Type: Round Suction Cup Electromagnet
• Operation Type: DC electromagnetic holding
• Available Voltage: 5V / 6V / 12V depending on variation
• Holding Force Options: Approx. 3kg / 8kg / 15kg / 30kg
• Construction: Metal electromagnet housing
• Wiring: Two-wire DC connection
• Control: Direct DC switching / Relay / MOSFET / Controller
• Magnet Type: Energized holding electromagnet
• Recommended Surface: Flat ferromagnetic iron or steel
• Recommended Use: Holding, lifting, locking and automation projects
How It Works / কীভাবে কাজ করে
When the rated DC voltage is applied to the electromagnet coil, it generates a magnetic field and attracts a nearby iron or steel surface.
When power is removed, the magnetic holding force disappears or becomes very weak depending on residual magnetism.
DC power দিলে electromagnet-এর ভিতরের coil magnetic field তৈরি করে এবং iron/steel surface আকর্ষণ করে ধরে রাখে। Power বন্ধ করলে magnetic holding force release হয়ে যায়।
Basic Wiring / সাধারণ কানেকশন
The electromagnet typically uses two wires.
Power Supply + → Electromagnet Wire
Power Supply – → Other Electromagnet Wire
According to the supplied product instructions, this type of electromagnetic suction cup generally does not require polarity-specific wiring.
For automatic control, use:
• Relay module
• MOSFET driver
• Transistor driver
• PLC output through proper relay/driver
• Arduino / ESP32 with external switching circuit
⚠️ Do not connect the electromagnet directly to an Arduino or ESP32 GPIO pin.
Arduino / Microcontroller Control Note
For Arduino control, use a suitable MOSFET or relay driver because the electromagnet can require significantly more current than a microcontroller pin can supply.
Recommended setup:
• Arduino Digital Output → MOSFET / Relay Driver
• External DC Supply → Electromagnet
• Common GND when required by driver circuit
• Flyback diode across coil recommended when using a DC inductive load
Holding Force Note / Holding Force সম্পর্কে গুরুত্বপূর্ণ তথ্য
The stated 3kg, 8kg, 15kg and 30kg values are nominal holding-force ratings.
Actual holding force depends strongly on:
• Metal surface material
• Contact surface flatness
• Contact area
• Air gap
• Rust or paint thickness
• Supply voltage
• Available current
• Temperature
• Mounting orientation
For maximum holding force, the electromagnet should contact a clean, flat and thick ferromagnetic steel surface with minimal air gap.
Important Power Supply Note
Always use the correct rated voltage for your selected model.
Voltage by Variant
• KK-P20/15 → DC 6V
• KK-P25/20 → DC 5V
• KK-P30/25 → DC 12V
• KK-P40/20 → DC 12V
⚠️ Using voltage higher than the rated value may cause overheating or coil damage.
⚠️ Power supply must provide sufficient current for the selected electromagnet.
Heating & Continuous Operation Note
Electromagnets naturally generate heat while energized.
For long-duration operation:
• Provide adequate ventilation
• Avoid exceeding rated voltage
• Monitor coil temperature
• Do not cover the electromagnet with insulating material
• Use duty-cycle control if required by your application
If the magnet becomes excessively hot, disconnect power and inspect the supply voltage/current.
Why Choose This Round Electromagnet?
This electromagnet provides a simple way to create electrically controlled magnetic holding force. Unlike permanent magnets, it can be switched ON and OFF electronically, making it useful for automation and robotics.
এই electromagnet-এর সবচেয়ে বড় সুবিধা হলো power control করে magnetic attraction ON/OFF করা যায়। তাই robot arm, automatic lock, metal lifting এবং industrial prototype-এর জন্য এটি খুব practical।
Important Notes / গুরুত্বপূর্ণ নোট
⚠️ Select the correct variant before ordering.
⚠️ Do not exceed the rated voltage.
⚠️ Holding force is measured under ideal contact conditions.
⚠️ Actual lifting capacity may be lower in practical applications.
⚠️ Keep the contact surface clean and flat for maximum magnetic force.
⚠️ Do not connect directly to microcontroller GPIO.
⚠️ Use relay/MOSFET and suitable external power supply.
⚠️ Coil may become warm or hot during continuous operation.
⚠️ Do not use above people or fragile objects without a mechanical safety backup.
⚠️ Product wire length, marking and housing finish may vary slightly depending on stock batch.
Frequently Asked Questions / FAQ
How many variants are available?
There are 4 variants.
What are the available holding forces?
Approximately 3kg, 8kg, 15kg and 30kg.
Which model is 5V?
The KK-P25/20 variant is rated at DC 5V.
Which model is 6V?
The KK-P20/15 variant is rated at DC 6V.
Which models are 12V?
The KK-P30/25 and KK-P40/20 variants are rated at DC 12V.
Can I control it with Arduino?
Yes, but use an external relay or MOSFET driver. Do not connect it directly to an Arduino output pin.
Does the electromagnet require polarity?
According to the supplied product instruction, the basic electromagnet coil connection generally does not distinguish positive and negative polarity.
Does the magnet stay attached after power is removed?
Normally the main magnetic force disappears when power is removed, although a small amount of residual magnetism may remain.
Can it lift exactly 30kg?
The 30kg figure is a nominal holding-force rating under ideal conditions. Real-world lifting capacity depends on contact surface, orientation, voltage, air gap and safety factor.
Round DC Electromagnet 5V 6V 12V – 3kg 8kg 15kg 30kg Holding Magnet
Buy round DC suction cup electromagnet with 4 variants: 6V 3kg, 5V 8kg, 12V 15kg and 12V 30kg for robotics, metal lifting, magnetic lock and automation projects.
