Magnet set
NdFeB or SmCo segments matched to drawing, grade, coating and temperature requirement.
PERMANENT-MAGNET ROTOR KITS
Magnetic
potential.
Real motion.
Build-to-spec rotor kits for motor developers. We coordinate magnet sourcing, rotor hardware, contracted assembly and verification into one quoted prototype package.
- US-ORIGIN · ALLIED · GLOBAL ROUTES
- DOCUMENTED COUNTRY OF ORIGIN
- NdFeB · SmCo · PROTOTYPE & LOW VOLUME
01 / ROTOR LAB
See the package
before you spec it.
Orbit a reference rotor, change the pole count and pull the magnet set apart to see what a kit contains: segments, hub and carrier, end rings and retention.
Or open your own STL, OBJ or GLB. The file is read by your browser and never leaves your device.
- Illustrative geometry, not a magnetic simulation
- No upload, no account, nothing submitted
- Do not load export-controlled models
R / 01 · ROTOR LABINTERACTIVE 3D
02 / WHAT WE DO
The rotor is yours.
The coordination is ours.
Rathlo helps commercial motor developers move from a rotor requirement to a quoted prototype package. We coordinate magnet sourcing, supporting hardware, contracted assembly and inspection, with the supply route selected for performance, cost, lead time and required provenance.
Rotor package
Rotor hardware
Customer-specified or quoted hub, carrier, sleeve and retention features.
Integration
Bonding, encapsulation or mechanical retention through a contracted specialist.
Verification & options
Standard evidence
Dimensional results, pole orientation, surface-flux readings and available supplier certificates.
Optional services
Field mapping, environmental testing and dynamic balancing when included in the quotation.
Traceability
Documented supplier, batch and declared country of origin for quoted components.
03 / BEST FIT
Prototype and
low-volume rotors.
Initial engagements suit teams that have a drawing or envelope, defined operating conditions and a measurable magnetic or motor-performance target.
01
Commercial drones
Lightweight, high-speed outrunner and inrunner rotors where mass, balance and temperature margin decide flight time.
DETAILS →02Robotics & automation
Compact, high-pole-count rotors for joints and actuators, where torque density and smooth motion matter.
DETAILS →03Marine systems
Rotors for thrusters and propulsion that must survive moisture, salt and long duty cycles.
DETAILS →04Pumps & fluid handling
Wet-running, canned and magnetic-coupling rotors where chemical compatibility and temperature define the design.
DETAILS →05Research equipment
One-off and short-run rotors for labs, test rigs and new motor topologies.
DETAILS →04 / PROCESS
From requirement
to evidence pack.
Nothing is ordered until you approve a written quote. Every build ends with the documents that show what was made, where it came from and how it measured.
- 01
RFQ review
Geometry, environment, field target, quantity and sourcing constraints.
- 02
Written quote
Defined suppliers, work scope, evidence, exclusions, price and lead time.
- 03
Prototype build
Material ordered after approval and deposit. Milestones tracked to delivery.
- 04
Evidence pack
Inspection results and available material and origin documents delivered with the parts.
05 / SOURCING ROUTES
US-origin, allied
or global. Your call,
documented.
Every quote names the route, the suppliers and the declared country of origin for each component, so you choose provenance knowingly, not by accident.
Rathlo’s team comes from U.S. import, customs and tariff work (Import Gateway), so landed cost, duties and origin paperwork are part of every quote.
US-origin
Domestic magnet and rotor partners where available.
- DOCUMENTED
- Supplier declarations of country of origin for magnets and quoted components; batch records.
- TRADE-OFFS
- Highest provenance; subject to available capacity, grade range and longer lead times. Typically a higher unit cost.
Allied-origin
Non-China sources such as Japan, the EU and other allied suppliers.
- DOCUMENTED
- Declared country of origin, supplier certificates and import paperwork.
- TRADE-OFFS
- Often wider grade and geometry options than domestic supply; duties and freight vary by country. Mid-range cost and lead time.
Global / commercial
Lowest-cost commercial supply, with origin declared.
- DOCUMENTED
- Declared country of origin and available supplier certificates.
- TRADE-OFFS
- Fastest and lowest unit price in many cases, but Chinese-origin material may carry export-licence risk and Section 301 duty, and is unsuitable for restricted programs.
Why origin matters now
STATUS AS OF LATE OCTOBER 2026 · NOT LEGAL ADVICE
Licences for SmCo and Dy/Tb-containing NdFeB
Since April 2025, China requires export licences for samarium-cobalt magnet materials and NdFeB magnet materials containing dysprosium or terbium (MOFCOM/GAC Announcement No. 18 of 2025). A broader October 2025 package is suspended; as of late October 2026 the published suspension runs to 10 November 2026, with an extension to 10 January 2027 reported but not yet published.
Source: MOFCOM (opens in a new tab)
25% additional duty on Chinese permanent magnets
Since 1 January 2026, permanent magnets that are products of China (HTS 8505.11.00) carry a 25% Section 301 duty on top of the 2.1% general rate. Other tariff actions may also apply; we confirm the current stack at quote time.
Mine-to-magnet restriction from 1 January 2027
For U.S. defense acquisitions, the restriction on NdFeB and SmCo magnets from China, Russia, North Korea and Iran widens on 1 January 2027 from melting and magnet production to the full chain: mining, refining and separation through finished magnets, subject to listed exceptions.
Source: DFARS 225.7018 (acquisition.gov) (opens in a new tab)
06 / CURRENT DELIVERY MODEL
What Rathlo does today, and what it does not.
Rathlo currently coordinates design review, sourcing, contracted production and verification. Manufacturing, assembly, magnetization, balancing and specialized testing are performed by qualified third parties only when identified in the written quotation. No U.S.-origin, defense-compliance or performance certification is implied unless expressly included.
07 / ROADMAP NOT CURRENT SERVICES
From earth.
To field.
Our longer-term ambition extends upstream, toward rare-earth extraction, refining and recovery connected to the products motor builders need.
Development roadmap only. Rathlo does not operate mining, refining, recycling or magnet-making today.
- EXTRACTIONROADMAP
- REFININGROADMAP
- MAGNETSSOURCED TODAY
- MOTIONYOUR MOTOR
08 / REQUEST A QUOTE
Start an RFQ.
Eight short steps. Approximate numbers are fine; we confirm everything in the first review.
INFORMATION NEEDED FOR A QUOTE
- Drawing, CAD model or envelope dimensions
- Magnet material and grade, if known
- Pole count and magnet arrangement
- Operating speed and temperature range
- Coating and environmental requirements
- Target flux, torque or back-EMF
- Quantity and required delivery date
- Required certifications and origin requirements
DRAWINGS & CAD
Attach up to 5 files (100 MB each) in the Sourcing step: STEP, IGES, Parasolid, SolidWorks, Inventor, STL, OBJ, GLB, DXF, DWG, PDF or ZIP. Files are stored privately, shared with suppliers only after you approve, and we can sign an NDA first. Never attach ITAR/EAR-controlled data.
Prefer email? Download your brief and send it to contact@rathlo.com.
09 / FAQ
Straight
answers.
Is there a minimum order quantity?
No fixed minimum is published. Single prototypes and short runs are in scope; the quote states the practical minimums of the suppliers on your route.
What lead time should we expect?
Lead time is quoted per project. It depends on grade, geometry, coating, origin route and the services you include, and is stated in the written quote before you commit.
What origin documentation do we receive?
For quoted components we document the supplier, batch and declared country of origin, together with available supplier certificates. Origin is as declared by suppliers; we do not certify it ourselves.
Can you guarantee U.S. origin or DFARS compliance?
Not by default. A US-origin route is available where domestic capacity exists. Any Buy American, TAA, DFARS or other compliance statement applies only if it is expressly written into the quotation.
Will you sign an NDA?
Yes. A mutual NDA is available, and we can sign it before you send drawings or before anything is shared with a supplier.
Can I send drawings or CAD files with the RFQ?
Yes. Attach up to 5 files of 100 MB each in the Sourcing step: STEP/STP, IGES/IGS, X_T/X_B, SLDPRT/SLDASM, IPT/IAM, STL, OBJ, GLB, DXF, DWG, PDF or ZIP. Files are stored privately, are never public, and are shared with suppliers only after you approve. Do not attach ITAR, EAR-controlled or otherwise export-controlled data; you confirm this before uploading.
Do you manufacture in-house?
No. Rathlo coordinates design review, sourcing, contracted production and verification. Manufacturing, assembly, magnetization, balancing and specialized testing are carried out by qualified third parties named in the quote.
What don’t you do?
We do not design motors, run electromagnetic simulations as a service, mine or refine rare earths, or handle export-controlled data through public channels. Mining, refining and recovery are on our roadmap, not offered today.
What does the quote include?
Defined suppliers, work scope, evidence to be delivered, exclusions, landed price including expected duties, and lead time. Material is ordered only after approval and deposit.