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How to Quickly Find the Right Solenoid? A Simple Guide by Shape & Application
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By: solenoids
- Jun 01, 2026
- 1 Visit
Not sure which solenoid fits your project?
You don‘t need to be an engineer. Just answer a few simple questions below, and we will point you to the right solenoid type instantly.
At NEXTCORE ELECTRONIC, we manufacture 7 main solenoid families. We help you find the balance between performance, size, energy consumption, and cost.
Step 1: Do You Have Strict Size Limits?
✅ No strict size limits + Budget sensitive
👉 We recommend: Frame Solenoids (C frame / D frame)
Frame solenoids are our most cost-effective solution. They offer reliable performance without expensive precision machining.
| Type | Features | Best For |
|---|---|---|
| C frame solenoid | Open frame, compact, low cost | Office equipment, vending machines, game machines |
| D frame solenoid | Slightly larger, higher force than C frame | Locks, small appliances, automotive accessories |
Why choose frame solenoids?
✅ Lowest cost among all solenoid types
✅ Good enough for most general applications
✅ Fast custom sample (~15 days)
✅ Easy mounting with standard brackets
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“If you don’t have tight space constraints and want the best value – start with C frame or D frame solenoids.”
✅ Yes, I have strict size / diameter limits
👉 We recommend: Tubular Solenoids
When space is limited (especially diameter), tubular solenoids outperform frame solenoids significantly.
| Feature | Tubular Solenoid |
|---|---|
| Force | Higher than frame solenoid at the same stroke |
| Size efficiency | Best force-to-volume ratio |
| Duty cycle | Available from 10% to 100% continuous |
| Typical applications | Medical devices, valves, locks, automotive |
Why choose tubular solenoids?
✅ Generates more force than a frame solenoid of the same size
✅ Sealed housing protects against dust
✅ Ideal for 12V or 24V DC battery-powered devices
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“Same outer diameter, same stroke – tubular gives you noticeably higher pulling force.”
Step 2: What About Energy Consumption?
✅ I want low energy consumption / battery-powered operation
👉 We recommend: Keep Solenoids (Latching / Bistable)
Keep solenoids (also called latching solenoids) only consume power when switching state. Once changed, they hold position without any electricity.
| Feature | Keep Solenoid |
|---|---|
| Power consumption | Zero when holding |
| States | 2 stable positions (bistable) |
| Best for | Battery-powered devices, smart locks, IoT valves |
Why choose keep solenoids?
✅ Dramatically extends battery life
✅ No heat generation during holding
✅ Available in push or pull configuration
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“If your device runs on batteries – you need a keep solenoid. Otherwise, the battery dies in weeks instead of years.”
Step 3: Do You Need Rotary Motion?
✅ I want shaft rotation (not linear movement)
👉 We recommend: Rotary Solenoids
Unlike linear solenoids that push/pull, rotary solenoids convert electrical energy into rotary motion (limited angle rotation).
| Feature | Rotary Solenoid |
|---|---|
| Rotation angle | 25° – 95° (custom available) |
| Torque | High torque at end of stroke |
| Typical applications | Pick-and-place machines, shutter controls, laser aiming |
Why choose rotary solenoids?
✅ Direct shaft rotation – no mechanical linkage needed
✅ High torque in a compact package
✅ Extremely long life (10+ million cycles)
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“Need a shaft to turn, not push? Rotary solenoids are your direct solution.”
Step 4: Do You Need Non-Contact Holding?
✅ I want hold/lift metal objects without physical connection
👉 We recommend: Electromagnets
Electromagnets are not solenoids with moving plungers. They are solid cores that magnetize when powered, attracting ferrous metals from a distance.
| Feature | Electromagnet |
|---|---|
| Moving parts | None – solid construction |
| Operation | Power ON → magnetic field → attracts metal |
| Typical applications | Magnetic lifters, holding fixtures, door catches |
Why choose electromagnets?
✅ Zero contact – no wear
✅ Can hold through non-magnetic barriers (plastic, air gap)
✅ Available in round or rectangular shapes
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“Power on = magnetic attraction. Power off = release. No moving parts to fail.”
Step 5: Are You Integrating into Another Product?
✅ I need only the coil (I have my own frame/plunger)
👉 We recommend: Solenoid Coils (Bare Coils / Bobbin Wound Coils)
If you already have a custom magnetic frame or plunger, you may only need the coil sub-assembly.
| Feature | Solenoid Coil |
|---|---|
| What you get | Wound copper coil + bobbin + leads (no plunger/frame) |
| Custom options | Any voltage, resistance, insulation class |
| Typical use | Replacement coils, OEM integration, custom actuator builds |
Why choose bare solenoid coils?
✅ Lower cost if you supply frame/plunger
✅ Full control over final assembly
✅ We wind to your exact turns and resistance
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“Already have a custom magnetic circuit? Just tell us your coil specifications – we will wind it for you.”
Step 6: Are You Controlling Gas or Liquid?
✅ I need to control air, water, oil, or gas flow
👉 We recommend: Solenoid Valves
A solenoid valve is a complete fluid control device – solenoid + valve body + seals + ports.
| Feature | Solenoid Valve |
|---|---|
| Function | Opens/closes fluid passage electrically |
| Media | Air, water, oil, gas, steam (depending on seal) |
| Ports | 2-way, 3-way, 5-way available |
| Typical applications | Irrigation, pneumatic systems, fuel control |
Why choose solenoid valves?
✅ Ready to install – no assembly required
✅ Available in normally closed (NC) or normally open (NO)
✅ Sealed for gas/liquid (zero external leakage)
If you can't find a suitable frame solenoids, please just contact us or whatsapp message to us“For gas or liquid applications, do not buy a bare solenoid. Buy a complete solenoid valve.”
Quick Selection Summary Table
| Your Need | Recommended Product | Go to Section |
|---|---|---|
| No size limits + best price | Frame solenoid (C frame / D frame) | Step 1 |
| Strict size limits + high force | Tubular solenoid | Step 1 |
| Low energy / battery powered | Keep solenoid (latching) | Step 2 |
| Shaft rotation needed | Rotary solenoid | Step 3 |
| Non-contact magnetic holding | Electromagnet | Step 4 |
| Only need the coil | Solenoid coil | Step 5 |
| Control gas or liquid | Solenoid valve | Step 6 |
Still Not Sure? Just Send Us Your Requirements
We understand that selecting the right solenoid can be overwhelming. You don’t need to figure it out alone.
📩 Send us the following (just 4 questions):
What is your power source? (Battery voltage? Wall outlet?)
What needs to move? (Push? Pull? Rotate? Hold metal?)
How much space do you have? (Length / diameter)
Are you controlling air/water? (Yes / No)
📧 Email: sales@soelnids-mfg.com
🌐 Website: solenoids-mfg.com
We will reply within 24 hours with:
Recommended solenoid type
Rough size range
Estimated sample cost (~$200 for 3–5 pcs)
Drawing if available
“You describe your problem. We design the solenoid.”
Why NEXTCORE for Your Solenoid Selection?
| Capability | NEXTCORE |
|---|---|
| All 7 types | Frame, Tubular, Keep, Rotary, Electromagnet, Coil, Valve |
| Custom voltage | 3V to 240V AC/DC |
| Low MOQ | 1000 pcs for mass production |
| Samples | ~15 days, ~$200 for 3–5 pcs |
| Certifications | ISO9001, Sedex 4P |
| China manufacturer | Direct factory – no middleman |
FAQ – Quick Answers
Q: Which solenoid is cheapest?
A: C frame and D frame solenoids – our most budget-friendly options.
Q: Which solenoid is strongest for small size?
A: Tubular solenoids – best force-to-size ratio.
Q: Which solenoid uses the least power?
A: Keep solenoids (latching) – zero power when holding.
Q: Do you make custom mounting brackets?
A: Yes – we customize mounting for all 7 types.
Ready to find your solenoid?
👉 Start with Step 1 above, or email us your 4 answers directly.
We want to give you 10% discount for your first order,
Use discount code at checkout
We want to give you 10% discount for your first order,
Use discount code at checkout