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FAIZEAL
OEM Magnetic Wheel for Wall-Climbing Robots
Custom Permanent Magnetic Adhesion Wheels — Built to Your Spec
Custom Engineering | Unlimited Size | Anti-Corrosion | Lightweight | Export-Ready
When a wall-climbing robot slips, stalls, or falls off a vertical steel surface, the failure is almost never the motor — it is the magnetic wheel. Holding force, traction, weight balance, surface conformity, and corrosion resistance all live in the wheel itself, and off-the-shelf catalog units rarely fit the geometry, payload, or working environment your robot actually faces.
Since 2017, FAIZEAL has been engineering custom permanent magnetic wheels and magnetic roller assemblies for wall-climbing robots deployed across ship hulls, storage tanks, wind turbine towers, bridges, pipelines, nuclear containment shells, and offshore platforms. Every wheel we ship is built to your drawing, your surface, and your duty cycle — not pulled from a shelf.
A magnetic wheel (also called a magnetic adhesion wheel, magnetic crawler wheel, or permanent magnetic roller) is the contact-and-adhesion unit of a wall-climbing robot. It combines:
• A permanent magnet circuit — typically sintered NdFeB, with optional Halbach array for higher specific force per unit weight
• A soft-magnetic back iron / steel yoke that channels flux to the contact face for maximum pull force
• A tire / tread layer — rubber, polyurethane, or specialty polymer — that grips the working surface, dampens vibration, and seals the magnet stack from corrosion
• A mechanical interface — hub, flange, keyway, bore, encoder mount, or bearing seat — that mates directly to your drive system
Unlike electromagnets, a magnetic wheel needs no power cable, no controller, and no heat-management system. It adheres the instant the wheel touches the steel — which is exactly why mission-critical inspection and cleaning robots rely on it.
• Ship hull inspection, cleaning, blasting, and repainting robots
• Above-ground and in-service storage tank shell inspection robots
• Wind turbine tower and nacelle climbing platforms
• Bridge cable-stay and steel box girder NDT (ultrasonic, magnetic particle, eddy current)
• Oil & gas pipeline exterior scanning and in-line inspection robots
• Nuclear and petrochemical pressure vessel exterior wall inspection
• Spray painting, anti-corrosion coating, and fireproofing robots
• High-rise steel structure and chimney inspection platforms
If your robot climbs on steel, we have already solved a wheel very close to yours.
This is where most magnetic wheel suppliers fall short. We do not sell a fixed SKU; we co-engineer the wheel around your robot.
• Pull forces from a few kilograms to several hundred kilograms per wheel, tuned by magnet grade (N35–N52, SH/UH/EH grades), pole count, and Halbach vs. conventional radial magnetization
• FEA-validated flux distribution — we provide the holding-force-vs.-air-gap curve before tooling
• No upper size limit. We have produced magnetic wheels from Ø30 mm precision inspection rollers up to Ø500 mm+ heavy-payload drive wheels
• Unusual aspect ratios (ultra-thin or ultra-wide) are routine — we redesign the magnetic circuit, not the wheel
• Aluminum alloy (6061/7075) hubs, titanium rotor sleeves, carbon-fiber reinforced tread rings, hollow-shaft architectures
• We routinely cut 30–60% off a baseline all-steel design while keeping holding force flat
• Lightweight magnetic wheels for aerial-tethered, drone-on-cable, or backpack-portable climbing robots are a standard request
• Salt-water marine duty: NdFeB pot fully sealed inside a vulcanized chloroprene / nitrile / EPDM / polyurethane tread, plus stainless fasteners and Zn/nickel/epoxy-coated steel components
• Chemical/splash exposure: FKM (Viton) or PTFE-faced options available
• Subsea-rated or splash-zone duty: full potting, double-sealed bearings, sacrificial anode bracket on request
• Anti-corrosion magnetic wheel is not a coating we add — it is a layered protection scheme designed around your duty
• Standard and custom flange patterns (3-M3 to 12-M12 bolt circles)
• Keyways, D-bores, interference fits, shrink-fit hubs, splines
• Integrated encoder, brake, or strain-gauge mounting pads
• Pre-installed deep-groove ball bearings, tapered roller bearings, or customer-supplied bearing sets
• Hollow shaft for cable pass-through routing
• High-temperature operation up to +200 °C (EH-grade NdFeB + heat-resistant tread compound)
• Low-temperature / cryogenic variants for arctic vessel and offshore structures
• Explosion-proof / ATEX spark-safe construction (no electronics in the wheel, bonding straps, spark-safe fasteners)
• Clean-room compatible low-particulate tread compounds
• Conductive or static-dissipative treads for tank interiors near flammable vapors
We treat the magnetic circuit as a designed system, not a parts list:
• Magnet grade selection: N35, N38, N42, N48, N50, N52 — chosen for required pull force per gram, not catalog rating
• Magnetization pattern: radial multi-pole, axial poles, or Halbach array for up to ~30% higher specific force on the contact surface
• Back iron: DT4 / low-carbon steel yoke, FEA-optimized to eliminate flux bottlenecks at the pole shoes
• Air-gap management: tread thickness is matched to the magnet stack for maximum holding force on slightly rusty or painted surfaces
• Temperature stability: HcJ, μrec, and irreversible-loss budget computed so your wheel survives the project's max operating temperature, not just room temperature
We do not outsource the steps that matter:
• NdFeB magnet sintering and magnetization through controlled supply chains
• CNC machining of hubs, flanges, yokes, and rotor sleeves — 5-axis capability, ±0.02 mm tolerance
• Vulcanized rubber and PU tread bonding — the magnet stack is fully encapsulated with no seam or exposed magnet edge
• Mechanical assembly and dynamic balancing to G2.5 / G6.3, encoder alignment, and 100% pull-force test on every wheel before shipment
• Surface treatment: black oxide, Zn, Ni, electrophoretic paint, PTFE, DLC, salt-spray-rated coatings
• Full traceability: per-wheel batch record, magnet lot documentation, balancing report, and pull-force test data shipped with every order
1. 10 years of magnet-component engineering — NdFeB, Halbach arrays, magnetic couplings, rotor assemblies, and pot magnets. We do not subcontract magnetic know-how.
2. Custom is our default — every wheel BOM is open to your design rules and constraints
3. End-to-end in-house production — from magnet circuit design to tread bonding and dynamic balancing
4. Export-ready documentation — DDP/FOB/EXW terms, REACH/RoHS/CE documentation packs, NDA-friendly engineering workflow
5. No engineering language barrier — we read your FEA report, your STEP file, and your one-pager. We respond in the same units you design in.
Yes. Diameter is not a limiting parameter for us. Tell us the OD, the required pull force, and the air gap — we will back-propose the magnet circuit and the hub.
A 0.5 mm paint + rust layer typically reduces pull force 20–40%, depending on magnet grade and pole pitch. We spec the wheel for your actual surface, not a lab coupon.
Yes. Aluminum/titanium hub + carbon-PU tread + optimized magnetic circuit can typically cut wheel weight 30–60% versus an all-steel baseline.
Yes. We routinely ship 1–10 piece prototypes with full test reports before any volume commitment.
We design to the slip-load curve you specify and document it. For vertical-load duty, 3–5× static safety factor is routine.
We document compliance per project: salt-spray test reports, material certificates, and ATEX-style spark-safe construction on request. We are not a notified certification body, but we provide the full test pack your auditor requires.
Prototype: 10–20 working days after drawing freeze. Production: 20–45 working days depending on volume and material lead times.
Yes. We offer magnet-circuit-only builds for customers who prefer to keep hub manufacturing in-house.
Send us:
• Outer diameter × width (or a STEP / IGES file)
• Required holding force and air gap
• Surface condition (polished, painted, rusty, coating thickness)
• Mechanical interface (flange pattern, keyway, bearing spec)
• Duty environment (marine, chemical, high-temp, ATEX, clean-room)
• Quantity and target delivery date
We typically return a feasibility and indicative pricing note within 2 working days, and a firm quotation within 5–7 working days.
