Tailored Cylindrical Geometry
Cylindrical magnets sized exactly to your design
Cylindrical magnets are also called button magnets.
They are the workhorses of magnetic closures and structural fasteners.
Off-the-shelf suppliers only stock standard sizes.
We offer custom cylinders to your exact specifications.
Any aspect ratio you need
Our customization capacities include flat, coin-shaped discs for tight electronic enclosures to tall.
And elongated rods for deeper magnetic reach.
We can make the exact geometry to fit your machined pockets or molded cavities.
Your design drives the dimensions
We support the full spectrum of aspect ratios.
This allows you to balance holding force against available volume.
Specify your diameter and thickness, and we’ll manufacture to match.
The “Customization” Advantage
As your manufacturing partner, we help you tune the geometry for performance:
1. Variable Aspect Ratios (Diameter vs. Thickness):
We do not impose fixed standard sizes.
You define the ratio.
For “Shear” Resistance:
– If the magnet needs to prevent sliding (e.g., a wall mount), we can increase the diameter to maximize surface friction.
For “Air Gap” Reach:
– If the magnet is buried behind thick plastic or leather, we can increase the thickness (height) to project the magnetic field further.
2. Precision Diameter Control (The Press-Fit):
Button magnets are often press-fitted into round holes.
A loose fit means the magnet falls out; a tight fit cracks the housing.
Our Capability:
– We use Centerless Grinding to hold strict diameter tolerances (±0.02mm upon request).
– This ensures a perfect interference fit for your specific material.
– No matter it is aluminum, wood, or rigid plastic.
3. Cosmetic & Tactile Customization:
Since “Button” magnets are often visible to the user (or touched), the finish matters.
The “Soft” Edge:
– We can customize the Chamfer (R-Angle).
– We can apply a heavy tumble for a smooth, “soft-touch” radius (ideal for tactile knobs or closures).
– Or a minimal chamfer for maximum surface contact area.
Surface Finishes & Durability
High-Luster Nickel (Standard):
– As shown in the product photo, our standard Ni-Cu-Ni plating offers a jewelry-like bright silver finish.
– Perfect for visible closures in packaging or retail displays.
Color Matching:
– We can offer Black Nickel, Gold.
– Or Epoxy coatings to match your product’s color palette.
Environmental Protection:
– For buttons used in outdoor gear or washable apparel, we offer hermetic sealing options (Parylene or double-layered Epoxy).
Application Examples
Magnetic Fasteners: Custom-sized cylinders for handbags, wallets, and premium box packaging.
Sensors & Actuators: Precision sensor triggers inside knobs or rotational dials.
Point-of-Sale (POS): High-strength mounting points for retail fixtures.
Fidget / Haptic Devices: Cylinders tuned for specific weight and magnetic resistance.
Ordering Guide: Define Your Button
To receive a quote for custom production, please provide:
1). Exact Dimensions: Diameter x Thickness (Length).
2). Tolerances: Do you need Standard (±0.05mm) or Precision (±0.02mm for press-fits)?
3). Chamfer Preference: Standard, Heavy Radius (rounded), or Sharp?
4). Quantity: (Custom runs are cost-effective in batches of 500+).
