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Coreless BUM series
BUMTA Series
Coreless BUM series
BUMTA Series

The moving coil has no iron core, so there is no attraction between the moving coil and the stator magnetic track. 

The coreless rotor has no cogging effect and runs smoothly. 

Compared with iron core motors, the mover has a lighter mass, which can achieve high acceleration and has better dynamic performance. 

The balancing effect of the double-row magnetic rails offsets the attraction between the magnets, making them easy to install and handle.

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Product Parameters
Overall dimensions
Product Parameters
BUMTA Series Technical Data
Performance Parameters Symbol Unit BUMTA03070 BUMTA06070 BUMTA09070   BUMTA12070
Peak Force Fp N 600 1210 1810 2418
Continuous Force Fc N 120 240 360 480
Motor Constant Km N/SQRT (W) 14.4 20.4 25.0 29.1
Peak Current Ip Arms 5.8 11.5 17.2 23.0
Continuous Current lc Arms 1.2 2.3 3.5 4.7
Resistance@25℃ Rm Ohms L-L 35.8 17.9 11.9 8.9
Inductance L mH L-L 42 21 14 10
Back EMF Constant Ke Vpeak/m/s L-L 87 87 87 87
Force Constant Kf N/Arms 107 107 107 107
Electrical Time Constant Te ms 1.17 1.17 1.17 1.17
Electrical Cycle(N to N) 2t mm 57 57 57 57
Max Coil Temperature Tmax 130 130 130 130
Magnetic Attraction Fa kN 0 0 0 0
Coil Mass Mc kg 0.55 0.95 1.35 1.75
Track Mass Mw kg/m 21 21 21 21 
*The above parameters are all obtained through tests in accordance with the LINKHOU experimental standards.。
Outline dimension drawing