CEPS 0.27 kg; JRC 0.30–0.35 kg; one explicitly non-representative teardown yielded 0.160 kg.
Rank 09 · NdFeB application
E-bike or pedelec
D-Ggeneric literature valueLiterature figure; individual teardown shown separately
In the rotor of a hub or mid-drive motor. In a hub motor, the permanent magnets are arranged in a ring on the rotating housing around the stator.
Reference value0.27 kgNdFeB per drive as a literature reference
Highest reference value used0.35 kgNdFeB per drive as a literature reference
Limitations of the figure
JRC notes that older factors may overstate modern designs. The range is not a current market average.
Original application & recovery
Where magnets are located in e-bikes and pedelecs
Its position within the device helps with identification, but does not in itself establish the alloy, weight or eligibility for purchase.
Location within the equipment
In the rotor of a hub or mid-drive motor. In a hub motor, the permanent magnets are arranged in a ring on the rotating housing around the stator.
System boundary
NdFeB per drive as a literature reference. Foreign parts, housings, shafts, back irons, supports and other device components are not automatically included in the magnet mass.
Record before submitting an enquiry
- Document the motor manufacturer, model and year
- Assess hub and mid-drive motors separately
- Clearly separate the 0.160 kg individual case from the 0.27–0.35 kg factors
Source reference
Source of the figure
D-Ggeneric literature value
European Commission JRC · CRM substitution report
CEPS 0.27 kg; JRC 0.30–0.35 kg; one explicitly non-representative teardown yielded 0.160 kg.
Open original source ↗Other applications