Tel: 972-516-0692
Easy Return Policy
satisfaction guaranteed
satisfaction guaranteed
Premium Products
we guarantee our quality
we guarantee our quality
100% Safe Shopping
256 bit SSL encryption
256 bit SSL encryption
Shop By Category
-
Neodymium Magnets
- Neodymium Magnets
-
Neodymium Disc Magnets
- Neodymium Disc Magnets
- Neodymium Disc Magnets Diameter <= 1/4"
- Neodymium Disc Magnets 1/4 < Diameter <= 1/2"
- Neodymium Disc Magnets 1/2 < Diameter <= 1"
- Neodymium Disc Magnets Diameter > 1"
- Diametrically Magnetized Magnets
- Countersunk Disc Magnets
- Adhesive Disc Magnets
- Plastic Coated Disc Magnets
- Steel Magnet Strikers
- Neodymium Block Magnets
- Cylinder Magnets
- RING Magnets
- CUBE Magnets
- ARC Magnets
- WEDGE Magnets
- Magnet Sphere
- Plastic Coated Magnets
- Magnet Strikers
- N52 Neodymium Magnets
- CERAMIC Magnets
- SmCo Magnets
- ALNICO Magnets
- Cup & Pot Magnets & Magnetic Bases
-
Home Magnets
- Rubber Coated
- OFFICE Magnets
- Industrial Magnets
- Magnet Wires
- Custom Made Magnets
- Amazon Neodymium Magnets
- WIND POWER - Blades
Shop By Brand
- Neodymium Magnets
-
Neodymium Disc Magnets
- Neodymium Disc Magnets
- Neodymium Disc Magnets Diameter <= 1/4"
- Neodymium Disc Magnets 1/4 < Diameter <= 1/2"
- Neodymium Disc Magnets 1/2 < Diameter <= 1"
- Neodymium Disc Magnets Diameter > 1"
- Diametrically Magnetized Magnets
- Countersunk Disc Magnets
- Adhesive Disc Magnets
- Plastic Coated Disc Magnets
- Steel Magnet Strikers
- Neodymium Block Magnets
- Cylinder Magnets
- RING Magnets
- CUBE Magnets
- ARC Magnets
- WEDGE Magnets
- Magnet Sphere
- Plastic Coated Magnets
- Magnet Strikers
- N52 Neodymium Magnets
Shop By Brand
Ceramic Block Magnets
Ceramic Block / Bar Magnets
Industrial Grade Block Magnets: Precision Performance for Every Application Block magnets (rectangular and square) are the backbone of industrial holding, lifting, and sensing systems. Whether you require the extreme flux density of N52 Neodymium blocks or the high-thermal stability of Grade 8 Ceramic (Ferrite) blocks, CMS Magnetics provides ISO-certified solutions designed for durability.
Our inventory includes a wide range of sizes and materials:
-
Neodymium Blocks: Maximum power-to-size ratio for compact assemblies.
-
Ceramic (Ferrite) Blocks: Cost-effective, corrosion-resistant, and high-temp capable.
-
Samarium Cobalt (SmCo) Blocks: Essential for aerospace and high-heat environments.
Technical Guide: How to Select the Right Block Magnet
Choosing the correct block magnet involves more than just dimensions. The followings are the critical factors our engineering clients use when sourcing.
1. Material Grade Comparison
Understanding the trade-off between strength and environment is key to project success.
| Material Type | Grade Example | Pull Force | Max Temp | Best Use Case |
| Neodymium | N52 | Extreme | 176°F (80°C) | Robotics, Sensors, High-Power Latches |
| Ceramic | C8 (Grade 8) | Moderate | 482°F (250°C) | Conveyors, Separators, Outdoor Use |
| SmCo | 26 Grade | High | 572°F (300°C) | Aerospace, Military, Deep Sea Oil/Gas |
2. Understanding Magnetization Direction
Most block magnets are Axially Magnetized (poles on the two largest flat surfaces). However, specialized applications may require Diametric or Multi-pole magnetization.
-
Axial: Best for surface-to-surface holding.
-
Lateral: Best for magnetic sensors and specialized motor rotors.
3. Why Coating Matters
For Neodymium blocks, our standard Ni-Cu-Ni (Nickel-Copper-Nickel) triple-plating prevents the oxidation of rare-earth alloys. For outdoor or medical use, we also offer:
-
Epoxy Coating: Superior moisture protection.
-
Plastic/Rubber Coating: High friction and scratch prevention for delicate surfaces.
4. Safety and Handling Instructions
Large block magnets possess significant pull force and can cause serious pinch injuries.
-
Slide, Don’t Pull: When separating large blocks, slide the top magnet off the stack.
-
Fragility: Ceramic and Neodymium are both brittle; avoid letting them "snap" together to prevent shattering.
Ceramic Block Magnets (Ferrite)
Ceramic block magnets are the type of magnets that you probably from when you were a child. These ceramic block magnets have been around for a long time and can be found all around you. From powering your speakers to sticking on the fridge, these magnets are good for most common household type applications (hanging towels and notes from a refrigerator, many light hobby functions…) Ceramic block magnets are composed of iron oxide, barium and strontium elements.
These block magnets can be used at higher temperatures, they do not corrode in weather like some of the rare earth types and have a higher resistance to demagnetization & and are very inexpensive as well. Ceramic block magnets are great all around magnets that can be used in any way you can think of.
These magnets are ceramic and therefore are extremely brittle and hard because of the properties of the material that they’re made of. This makes them very tough (like most magnets) to drill, machine, or alter their form in any way without breaking them. If you wish to attempt to machine them, special techniques must be utilized.
Your best bet is to purchase these magnets in the size and shape that is required by your application.
Ceramic Magnets (ferrite) Permanent Non-rare earth
|
Grade |
Br (KGs) |
Hc (KOe) |
Hci (KOe) |
(BH)max (MGOe) |
Curie Temp . (°C) |
Max. Op. Temp (°C) |
|
Ceramic 1 |
2.2 |
1.86 |
3.25 |
1.10 |
450 |
300 |
|
Ceramic 5 |
3.8 |
2.4 |
2.5 |
1.1 |
450 |
300 |
|
Ceramic 7 |
3.4 |
3.25 |
4.0 |
2.75 |
450 |
300 |
|
Ceramic 8 |
3.85 |
2.95 |
3.20 |
3.5 |
450 |
300 |
|
Ceramic 10 |
4.2 |
2.95 |
3.05 |
4.2 |
450 |
300 |