Product Overview
Magnetic Wheel
Magnetic wheels are permanent magnetic wheel assemblies designed to generate strong holding force on ferromagnetic steel surfaces while allowing rolling movement. They are commonly used for magnetic crawling robots, steel plate inspection equipment, magnetic positioning devices, conveyor guidance, welding fixtures, climbing mechanisms and special automation systems working on steel structures.
A typical magnetic wheel uses high-performance NdFeB magnets, steel magnetic circuit parts, a precision bore, keyway or mounting groove, and optional stainless steel surrounding edge for protection and stable rolling contact. The magnetic circuit must balance holding force, rolling resistance, wheel size, working gap, safety factor, weight and installation interface.
Ningbo Vanguard Technologies supplies custom magnetic wheels based on required diameter, width, shaft bore, keyway, holding force, working temperature, load direction and steel plate condition. We support magnet grade selection, wheel structure review, magnetic circuit design, machining, assembly, surface treatment, holding force testing and batch inspection.
The specification tables below are organized from the supplied catalogue data. The listed forces are reference values measured at room temperature on a polished S235JR steel plate with 10 mm thickness. Actual force can vary significantly with air gap, paint, rust, surface roughness, steel grade, plate thickness, temperature, installation angle and load dynamics.
Quick View
Magnetic Wheel Selection Snapshot
55-2940N
W Series Holding Force
Round magnetic wheels with NdFeB magnet, H7 bore tolerance and keyway / groove structure.
490-4850N
R Series Contact Force
Magnetic wheel blocks with stainless steel surrounding edge and multiple working-gap force options.
100 °C
Catalogue Temperature
Standard W series data is listed for 100 °C; higher temperature designs can be reviewed separately.
10 pcs
Catalogue MOQ
Small-batch prototype and custom wheel structures can be reviewed according to drawing and application.
Magnetic Wheel Design Focus
Application Fit Guide
Clean steel plate
Best force
Painted surface
Gap loss
Rough / rusty surface
Lower force
Thin steel plate
Saturation risk
1Load ReviewWeight, safety factor
2Surface CheckPlate, gap, coating
3Wheel MatchDiameter, width, bore
4AssemblyMagnet, hub, edge
5Force TestHolding force, weight
Industries Served
Key Applications
Magnetic Crawling Robots
Magnetic wheels for robots moving on steel tanks, ship hulls, bridges, wind towers and large steel structures.
Steel Plate Inspection
Holding and rolling mechanisms for NDT, welding seam inspection, coating inspection and maintenance equipment.
Magnetic Conveying
Wheel or roller structures for moving, guiding or stabilizing ferromagnetic sheets and components.
Positioning Fixtures
Magnetic wheel and roller assemblies for temporary positioning, guiding, clamping or fixture movement.
Automation Equipment
Custom magnetic wheel modules for compact equipment, industrial automation and special-purpose machinery.
Custom Magnetic Modules
Integrated magnetic wheel assemblies with shaft, bearing, bracket, cover or custom mounting interface.
Catalogue Data
W Series Magnetic Wheel Specifications
W series magnetic wheels use NdFeB magnets, H7 bore tolerance and groove / keyway structure. The force data below is based on catalogue test conditions.
| Model | D (mm) | d (mm) | W (mm) | b (mm) | h (mm) | Force (N) | Temperature (°C) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| VGW25 | 25 | 8 | 16 | 3 | 8.6 | 55 | 100 | 0.054 |
| VGW32 | 32 | 10 | 18 | 4 | 11.1 | 80 | 100 | 0.10 |
| VGW40 | 40 | 12 | 20 | 4 | 13.1 | 120 | 100 | 0.20 |
| VGW50 | 50 | 16 | 25 | 5 | 17.3 | 200 | 100 | 0.35 |
| VGW63 | 63 | 20 | 32 | 6 | 21.7 | 330 | 100 | 0.70 |
| VGW80 | 80 | 25 | 40 | 8 | 26.7 | 630 | 100 | 1.45 |
| VGW100 | 100 | 30 | 50 | 8 | 31.7 | 900 | 100 | 2.80 |
| VGW125 | 125 | 40 | 62 | 12 | 42.1 | 1520 | 100 | 5.35 |
| VGW160 | 160 | 50 | 80 | 14 | 52.6 | 2940 | 100 | 11.40 |
Catalogue note: from VGW80 to VGW160, weight can be reduced while maintaining the same pulling force by optimized structure design.
Catalogue Data
R Series Magnetic Wheel Specifications
R series magnetic wheels use NdFeB magnets with stainless steel surrounding edge. Force is listed at 0 mm, 3 mm and 5 mm distance from a 10 mm thick steel plate.
| Model | R (mm) | L (mm) | W (mm) | H (mm) | W1 (mm) | H1 (mm) | R1 | M | W2 | L1 | Force 0mm (N) | Force 3mm (N) | Force 5mm (N) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VGR5040 | 50 | 40 | 76 | 36.5 | 42 | 12.5 | 26 | M4 | 64 | 18 | 490 | 230 | 150 | 0.55 |
| VGR5060 | 50 | 60 | 76 | 36.5 | 42 | 12.5 | 26 | M4 | 64 | 38 | 820 | 400 | 260 | 0.83 |
| VGR5080 | 50 | 80 | 76 | 36.5 | 42 | 12.5 | 26 | M4 | 64 | 58 | 1150 | 570 | 380 | 1.10 |
| VGR8040 | 80 | 40 | 115 | 51 | 76 | 20 | 49 | M5 | 102 | 18 | 730 | 400 | 300 | 1.15 |
| VGR8060 | 80 | 60 | 115 | 51 | 76 | 20 | 49 | M5 | 102 | 38 | 1250 | 730 | 540 | 1.68 |
| VGR8080 | 80 | 80 | 115 | 51 | 76 | 20 | 49 | M5 | 102 | 58 | 1750 | 1050 | 800 | 2.20 |
| VGR10040 | 100 | 40 | 152 | 62 | 100 | 26 | 64 | M5 | 138 | 18 | 850 | 480 | 340 | 1.75 |
| VGR10060 | 100 | 60 | 152 | 62 | 100 | 26 | 64 | M5 | 138 | 38 | 1500 | 900 | 650 | 2.55 |
| VGR10080 | 100 | 80 | 152 | 62 | 100 | 26 | 64 | M5 | 138 | 58 | 2150 | 1300 | 950 | 3.40 |
| VGR100100 | 100 | 100 | 152 | 62 | 100 | 26 | 64 | M5 | 138 | 78 | 2800 | 1700 | 1250 | 4.25 |
| VGR12040 | 120 | 40 | 172 | 70 | 120 | 30 | 80 | M5 | 158 | 18 | 1000 | 600 | 420 | 2.25 |
| VGR12060 | 120 | 60 | 172 | 70 | 120 | 30 | 80 | M5 | 158 | 38 | 1750 | 1100 | 800 | 3.28 |
| VGR12080 | 120 | 80 | 172 | 70 | 120 | 30 | 80 | M5 | 158 | 58 | 2500 | 1600 | 1200 | 4.32 |
| VGR120100 | 120 | 100 | 172 | 70 | 120 | 30 | 80 | M5 | 158 | 78 | 3250 | 2100 | 1600 | 5.35 |
| VGR15040 | 150 | 40 | 200 | 77 | 142 | 31 | 104 | M6 | 186 | 18 | 1200 | 750 | 560 | 2.95 |
| VGR15060 | 150 | 60 | 200 | 77 | 142 | 31 | 104 | M6 | 186 | 38 | 2100 | 1350 | 1050 | 4.25 |
| VGR15080 | 150 | 80 | 200 | 77 | 142 | 31 | 104 | M6 | 186 | 58 | 3000 | 2000 | 1550 | 5.65 |
| VGR150100 | 150 | 100 | 200 | 77 | 142 | 31 | 104 | M6 | 186 | 78 | 3950 | 2550 | 2050 | 7.10 |
| VGR150120 | 150 | 120 | 200 | 77 | 142 | 31 | 104 | M6 | 186 | 98 | 4850 | 3250 | 2550 | 8.40 |
Engineering Notes
Holding Force Test Conditions
| Item | Catalogue Test Condition | Engineering Impact |
|---|---|---|
| Test Plate | Polished S235JR steel plate according to DIN 10025 | Different steel grades and magnetic permeability can change measured force. |
| Plate Thickness | 10 mm steel plate | Thin steel may saturate and reduce available holding force. |
| Temperature | Room-temperature force test; W series catalogue temperature 100 °C | Higher working temperature may reduce NdFeB output and requires grade review. |
| Unit Conversion | 1 kg is approximately 10 N | Use safety factor for vertical, dynamic or vibration-loaded applications. |
| Application Influence | Installation, temperature, counter anchor and surface condition affect force strongly | Final design should be validated with the real steel surface and load direction. |
Engineering Selection
Design Points for Magnetic Wheels
Holding Force vs Rolling Force
Higher magnetic force improves safety but can increase rolling resistance, motor load and steering difficulty.
Working Gap Control
Paint, coating, rust, dust and curved surfaces create air gap and can reduce magnetic holding force quickly.
Safety Factor
Vertical climbing, vibration, acceleration and impact loads require a conservative safety factor beyond static catalogue force.
Mechanical Interface
Bore tolerance, keyway, shaft fit, bearing support and wheel alignment must match the driving mechanism.
Quality Control
Manufacturing & Inspection Capability
Magnet Assembly
NdFeB magnet selection, polarity control, magnetic circuit assembly, bonding and protective edge integration.
Machining Control
Wheel diameter, bore tolerance, keyway, groove, mounting holes and shaft interface can be inspected before shipment.
Force Testing
Holding force can be checked under agreed steel plate, surface condition, distance and pulling direction.
Surface Protection
Coating, stainless edge, anti-corrosion treatment and packaging help protect the wheel during storage and use.
Request a Quote
Information Needed for Fast Quotation
To speed up engineering review, please provide a drawing or confirm the specifications below. If the magnetic wheel will be used on an existing robot, fixture or steel surface, photos and working-condition details are also helpful.
- Wheel model, target dimensions, bore size, keyway and mounting interface
- Required holding force, load direction, safety factor, speed and dynamic condition
- Steel surface condition, plate thickness, paint thickness, air gap and curvature if any
- Working temperature, humidity, outdoor exposure, corrosion risk and surface protection requirement
- Sample quantity, annual volume, inspection requirement, packaging and delivery schedule
FAQ
Magnetic Wheel FAQ
Why is actual magnetic wheel force different from catalogue force?
Catalogue force is measured under controlled test conditions. Paint, rust, air gap, thin steel, curved surfaces, temperature and load angle can reduce real holding force.
Can magnetic wheels work on painted steel?
Yes, but paint creates air gap and reduces force. The coating thickness and surface condition should be included when selecting the wheel size and safety factor.
What is the difference between W series and R series?
W series are round magnetic wheels with bore and groove dimensions. R series are larger magnetic wheel blocks with stainless surrounding edge and force data at different working distances.
Can the magnetic wheel be customized?
Yes. Diameter, width, bore, keyway, mounting holes, magnet grade, protective edge, coating and force target can be reviewed according to drawing and application.
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