3-Year Comprehensive Warranty
100% Factory Backed • Direct Servicing from Kerala, India
BCNT Precision Machining Standards
Datasheet & Procurement Files
Neodymium Block Magnet - 25 x 12 x 2mm
Precision Mechanical Mounting Hardware • 3-Year Warranty
25 x 12 x 2mm Neodymium Magnet – Strong Block
Introducing our 25 x 12 x 2mm Neodymium Magnet, a strong block magnet that is perfect for various applications. With its compact size and impressive magnetic properties, this magnet is a versatile choice for both industrial and personal use.
25x12x2mm Neodymium magnet is a strong rectangular block magnet. Neodymium magnets, also known as NdFeB magnets, are made from an alloy of neodymium, iron, and boron, making them the strongest type of permanent magnet available.
Key Characteristics:
- Dimensions: 25 mm length x 12 mm width x 2 mm thickness
- Material: Neodymium (NdFeB)
- Shape: Rectangular block
- Strength: Very high magnetic strength due to the neodymium material
- Coating: Often coated with nickel, zinc, or epoxy to protect from corrosion
- Magnetization: Through Thikcness
- Max Operating Temp: 176ºF (80ºC)
- Net Weight: 4.7 gram
Applications:
- Industrial: Used in various machinery and equipment for holding, lifting, and separating materials.
- Electronics: Common in computer hard drives, microphones, and speakers.
- Hobbies and DIY Projects: Useful in model making, crafting, and home improvement projects.
- Medical: Sometimes used in magnetic therapy devices.
Handling and Safety:
- Handle with Care: Neodymium magnets are brittle and can chip or break if dropped or if they collide with each other.
- Keep Away from Electronics: Their strong magnetic fields can damage electronic devices.
- Pinching Hazard: Due to their strength, they can snap together quickly and cause injury.
Our neodymium magnet is available in three different grades: n35, n38, and n42. Each grade offers different levels of magnetic strength, allowing you to choose the perfect magnet for your specific needs. Whether you require a magnet for a small project or a more demanding application, we have the right grade for you.
Experience the power and versatility of our 25x12x2mm Neodymium Magnet. Order yours today and unlock a world of possibilities.
Would you like more detailed information or have a specific use case in mind?
NOTED: Product Images are shown for illustrative purposes only and may differ from actual product.
Pricing & Procurement
3-Year Factory Warranty included on all orders
Technical Specifications
Accelerometer Magnetic Mounts — Complete Size, Thread & Pull Force Matrix (20 SKUs)
Direct access to all 20 individual rare-earth sensor mounting magnets manufactured by BCNT Technologies
| Model Number | Product Name | Body Diameter | Thickness | Mounting Thread | Standard | Action |
|---|---|---|---|---|---|---|
| BCNT-MAG-20-M3 | Magnetic Mounting for Sensor - Ø20mm Neodymium, M3 Thread (18kg Pull Force) | 20 mm | 6 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-20-M5 | Magnetic Mounting for Sensor - Ø20mm Neodymium, M5 Thread (18kg Pull Force) | 20 mm | 6 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-20-M6 | Magnetic Mounting for Sensor - Ø20mm Neodymium, M6 Thread (18kg Pull Force) | 20 mm | 6 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-20-10-32 | Magnetic Mounting for Sensor - Ø20mm Neodymium, 10-32 UNF Thread (18kg Pull Force) | 20 mm | 6 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-20-1/4-28 | Magnetic Mounting for Sensor - Ø20mm Neodymium, 1/4-28 UNF Thread (18kg Pull Force) | 20 mm | 6 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-25-M3 | Magnetic Mounting for Sensor - Ø25mm Neodymium, M3 Thread (25kg Pull Force) | 25 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-25-M5 | Magnetic Mounting for Sensor - Ø25mm Neodymium, M5 Thread (25kg Pull Force) | 25 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-25-M6 | Magnetic Mounting for Sensor - Ø25mm Neodymium, M6 Thread (25kg Pull Force) | 25 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-25-10-32 | Magnetic Mounting for Sensor - Ø25mm Neodymium, 10-32 UNF Thread (25kg Pull Force) | 25 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-25-1/4-28 | Magnetic Mounting for Sensor - Ø25mm Neodymium, 1/4-28 UNF Thread (25kg Pull Force) | 25 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-30-M5 | Magnetic Mounting for Sensor - Ø30mm Neodymium, M5 Thread (35kg Pull Force) | 30 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-30-M6 | Magnetic Mounting for Sensor - Ø30mm Neodymium, M6 Thread (35kg Pull Force) | 30 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-30-M8 | Magnetic Mounting for Sensor - Ø30mm Neodymium, M8 Thread (35kg Pull Force) | 30 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-30-10-32 | Magnetic Mounting for Sensor - Ø30mm Neodymium, 10-32 UNF Thread (35kg Pull Force) | 30 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-30-1/4-28 | Magnetic Mounting for Sensor - Ø30mm Neodymium, 1/4-28 UNF Thread (35kg Pull Force) | 30 mm | 8 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-35-M5 | Magnetic Mounting for Sensor - Ø35mm Neodymium, M5 Thread (50kg Pull Force) | 35 mm | 10 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-35-M6 | Magnetic Mounting for Sensor - Ø35mm Neodymium, M6 Thread (50kg Pull Force) | 35 mm | 10 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-35-M8 | Magnetic Mounting for Sensor - Ø35mm Neodymium, M8 Thread (50kg Pull Force) | 35 mm | 10 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-35-10-32 | Magnetic Mounting for Sensor - Ø35mm Neodymium, 10-32 UNF Thread (50kg Pull Force) | 35 mm | 10 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-35-1/4-28 | Magnetic Mounting for Sensor - Ø35mm Neodymium, 1/4-28 UNF Thread (50kg Pull Force) | 35 mm | 10 mm | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-69172 | Neodymium Block Magnet - 20 x 10 x 3mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-63227 | Neodymium Block Magnet - 50 x 10 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-49630 | Neodymium Block Magnet - 20 x 5 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-47183 | Neodymium Hook Magnet - Strong Ferrite Pot with heavy duty eyebolt | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-35323 | Neodymium Pot Magnet - Ø12mm x 16mm Thick. Pushpin | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-35232 | Neodymium Countersunk Magnet - Channel with 2x CSK Hole | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-35168 | Neodymium Countersunk Magnet - Channel with CSK Hole | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-35124 | Neodymium Hook Magnet - Fishing Pot with 1 Eyebolt Strong Pulling Power | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-33590 | Neodymium Disc Magnet - Ø8 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-32836 | Neodymium Countersunk Magnet - 25 x 5 M5_CSK | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-30806 | Neodymium Hook Magnet - Fishing Pot with 2x Eyebolts Strong Pulling Power | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-30399 | Neodymium Magnet - test | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-23007 | Neodymium Disc Magnet - Ø25 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-16199 | Neodymium Cube Magnet - 10 x 10 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-11672 | Neodymium Block Magnet - 40 x 10 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-11361 | Neodymium Disc Magnet - 10mm x 5mm N52 | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-10265 | Neodymium Disc Magnet - 20mm x 5mm N35EH | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-10193 | Neodymium Disc Magnet - Ø12 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-7447 | Neodymium Block Magnet - 10 x 3 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-7443 | Neodymium Disc Magnet - Ø15 x 3mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-6814 | Neodymium Cylinder Magnet - 4 x 4mm Strong Cylinder | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-6652 | Neodymium Cylinder Magnet - 25mm x 25mm s N52 | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-3718 | Neodymium Block Magnet - 20 x 10 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-2331 | Neodymium Cylinder Magnet - Ø4 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-2227 | Neodymium Block Magnet - 50 x 50 x 25mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-2225 | Neodymium Block Magnet - 50 x 50 x 12mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-1903 | Neodymium Disc Magnet - 8 x 3mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-1835 | Neodymium Disc Magnet - 6 x 3mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-1479 | Neodymium Cylinder Magnet - 6 x 10mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-1413 | Neodymium Disc Magnet - Ø50 x 12mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-902 | Neodymium Disc Magnet - Ø20 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-799 | Neodymium Disc Magnet - Ø13 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-686 | Neodymium Block Magnet - 30 x 10 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-679 | Neodymium Ring Magnet - OD40 x ID20 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-585 | Neodymium Block Magnet - 50 x 25 x 12.50mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-269 | Neodymium Cube Magnet - 5 x 5 x 5mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-267 | Neodymium Cube Magnet - 10mm x 10mm x 10mm Cube | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-244 | Neodymium Disc Magnet - Ø20 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-239 | Neodymium Disc Magnet - Ø20 x 3mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-237 | Neodymium Disc Magnet - Ø15 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-217 | Neodymium Disc Magnet - Ø10 x 5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-213 | Neodymium Disc Magnet - Ø10 x 1.5mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-200 | Neodymium Cylinder Magnet - Ø25 x 25mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-190 | Neodymium Cylinder Magnet - Ø10 x 10mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-188 | Neodymium Cylinder Magnet - 8 x 10mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-183 | Neodymium Block Magnet - 20 x 10 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-179 | Neodymium Block Magnet - 40 x 20 x 10mm s | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-173 Viewing | Neodymium Block Magnet - 25 x 12 x 2mm | – | – | – (Female) | Standard | Current Product |
| BCNT-MAG-PM-137 | Neodymium Cylinder Magnet - Ø6 x 6mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-135 | Neodymium Block Magnet - 10 x 10 x 2mm | – | – | – (Female) | Standard | View SKU → |
| BCNT-MAG-PM-28 | Neodymium Disc Magnet - Ø10 x 2mm | – | – | – (Female) | Standard | View SKU → |
Need Custom Sensor Studs, Adhesive Pads or Non-Magnetic Adapters?
BCNT Technologies manufactures custom vibration sensor mounting hardware to exact machinery specifications. We design and machine custom dual-thread mounting studs (M6 to 1/4-28, 10-32 to M5), cementing pads, curved surface adaptors for motor casings, isolated mounting bases, and triaxial mounting cubes with ISO 5348 metrology precision.
Direct manufacturer pricing • All-India fast delivery
The Engineering Behind This Product
Explore the mathematical mechanics, metallurgical choices, resonance dynamics, and signal integrity standards engineered into every BCNT component.
1. Mechanical Resonance & Mounted Bandwidth Dynamics
ISO 5348 §4.2In predictive vibration monitoring, attaching an accelerometer via a magnetic base introduces additional mass and contact compliance, creating a mass-spring system whose natural resonant frequency ($f_n$) governs the upper usable measurement limit:
Where kinterface is the contact stiffness and mbase is the mass of the magnetic mounting base.
To maximize $f_n$ and preserve high-frequency vibration signal fidelity (up to 8 kHz for bearing impact demodulation), BCNT bases optimize the contact stiffness-to-mass ratio through precision CNC surface grinding (<0.005 mm flatness) and high-coercivity rare-earth neodymium cores.
Frequency Response by Mounting Method
| Mounting Technique | Typical Resonance (fn) | Usable Flat Bandwidth (±5%) | Best Use Case |
|---|---|---|---|
| Direct Stud Mount (Reference) | ~32 kHz | 0 – 10.0 kHz | Permanent Critical Machines |
| BCNT Flat Magnet + Silicone Fluid | ~14 kHz | 0 – 8.0 kHz | Route-Based Walkaround PdM |
| BCNT Flat Magnet (Dry Contact) | ~10 kHz | 0 – 5.0 kHz | General Machinery Surveys |
| Curved / Two-Pole Magnet | ~5 kHz | 0 – 2.0 kHz | Rough Motor Casings Only |
2. Magnetic Core & Shielding Metallurgy
Rare-Earth Sintered NdFeB Core (N45/N52 Grade):
Provides intense remanence ($B_r > 1.32 \text{ T}$) ensuring 18 kg to 50 kg vertical clamping pull force. Prevents sensor lift-off during high-G shock impacts.
303 / 304 Stainless Steel Flux Shunt:
Austenitic stainless steel casing directs magnetic flux downward into the machine steel while shielding the accelerometer's internal piezoelectric crystal from stray magnetic fields.
Coupling Fluid Physics:
Applying a micro-thin film of silicone grease or petroleum fluid fills microscopic surface asperities, tripling interface stiffness ($k_{interface}$) and eliminating high-frequency harmonic attenuation.
ISO 5348:2021 Mounting Best Practices
- 1. Angle-Roll Placement: Never drop the magnet straight down. Roll it gently from an edge to avoid shock-overloading the crystal (>5000g acoustic shock).
- 2. Thread Engagement: Thread sensor stud completely into base until flat contact is achieved. Recommended torque: 1.5 to 2.5 Nm.
- 3. Clean Test Target: Clear heavy paint chips, rust scales, and metallic debris before placement.
Detailed Engineering & Procurement Documentation
1. Precision Mechanical Mounting & Metrology Overview
The Neodymium Block Magnet - 25 x 12 x 2mm (SKU: BCNT-MAG-PM-173) is an industrial-grade precision accelerometer mounting magnet engineered and CNC-machined by BCNT Engineering in Kerala, India. Specifically developed for vibration analysts, predictive maintenance (PdM) teams, condition monitoring engineers, and NVH test laboratories, this mounting hardware ensures rigid, distortion-free mechanical coupling between industrial machinery and dynamic piezoelectric sensors.
Engineered from precision CNC-machined 303/304 austenitic stainless steel with an internal high-remanence sintered Rare-Earth Neodymium-Iron-Boron (NdFeB Grade N45/N52) core, it provides exceptional clamping pull force to maximize acoustic contact stiffness ($k$) and eliminate high-frequency signal attenuation during route-based walkaround data collection.
2. Comprehensive Engineering Specifications
Detailed mechanical tolerances, thread options, pull force ratings, and ISO 5348 metrology parameters for Neodymium Block Magnet - 25 x 12 x 2mm:
| Specification Parameter | Technical Value / Compliance |
|---|---|
| Material | Neodymium-Iron-Boron (NdFeB Rare-Earth) |
| Coating / Plating | Triple Layer Ni-Cu-Ni (Nickel-Copper-Nickel) |
| Magnetization | Axial / Through Thickness |
| Grade | N35 / N52 Industrial |
| Max Operating Temp | 80°C (176°F) |
| Applications | Block Magnets, Neodymium Magnet |
3. ISO 5348:2021 Mounted Resonance ($f_n$) & Metrology Dynamics
ISO 5348 §4.2 CompliantIn accordance with ISO 5348 (Mechanical Mounting of Accelerometers), attaching an accelerometer via a magnetic mounting base creates an elastic spring-mass dynamic interface. The natural mounted resonance frequency ($f_n$) governs the upper usable linear flat measurement bandwidth (±5% accuracy limit, typically ~20% to 50% of $f_n$):
Where kinterface is the acoustic contact stiffness and mbase is the magnet mass.
4. Key Industrial Sectors & Machinery Applications
5. Vibration Sensor Mounting FAQs
Direct stud mounting yields the highest natural frequency (~32 kHz), making it ideal for permanent continuous online monitoring. Flat rare-earth neodymium magnetic mounts paired with silicone coupling fluid achieve ~14 kHz resonance and up to 8.0 kHz linear flat response, providing the ideal portable solution for walkaround predictive maintenance surveys without drilling machinery casings.
Select the thread matching your vibration accelerometer's mounting stud. 1/4-28 UNF is the global standard for industrial general-purpose accelerometers (CTC, Wilcoxon, Hansford, PCB, SKF). Metric M6 and M8 are widely used in European/Japanese machinery transmitters. 10-32 UNF is standard for miniature, high-frequency, and triaxial teardrop sensors.
Never allow strong neodymium magnets to snap directly straight down onto steel surfaces, as the metal-to-metal impact can generate acoustic shock exceeding 5,000g, causing signal saturation or shear crystal fracture. Always touch the edge of the magnet to the machine target first, then gently roll the base into place (the ISO 5348 "angle-roll" technique).
Order Direct from BCNT Technologies India
Fast nationwide delivery across Mumbai, Pune, Bengaluru, Chennai, Hyderabad, Delhi NCR, Ahmedabad, and Kolkata with full GST invoicing, calibration certificates, and material test reports.
Frequently Asked Technical & Procurement Questions
Direct answers regarding sensor compatibility, ISO 5348 metrology standards, and nationwide B2B logistics.
Related Technical Guides & Selection Resources
3-Year Warranty
Complete Guide to Industrial Cables and Their Applications
An essential engineering guide covering industrial power, control, instrumentation, and sensor cables used across modern manufacturing and automated plants.
3-Year Warranty
How to Choose the Right Industrial Cable for Your Industry
Selecting the right cable prevents costly downtime. Discover how voltage ratings, sheath materials, and environmental factors influence cable longevity.
3-Year Warranty
Accelerometer Cables: Types, Features and Applications
Vibration monitoring requires pristine signal transmission. Explore how low-noise PTFE dielectric and double-braided shielding eliminate triboelectric noise.
Related Mounting & Sensor Accessories
Neodymium Block Magnet - 15 x 5 x 2mm
Neodymium Cube Magnet - 20mm Cube
Neodymium Block Magnet - 20 x 10 x 3mm
