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Hi Zakaria, The inner rotor is made up of steel and magnets with a fiberglass wrapping for added magnet adhesion. The wrapping allows these motors to reach high speeds with no magnet failure. Let me know if this answered your question. Thanks!

Hello, The best motor for a high torque and low speed application would be our BR series. Please send us an email for more information on this style of torque motor. Continuous torque ranges from 0.8 Nm to 3.9Nm . If you require more torque please let us know. Info"at"infranorusa.com.

Mitch, thank you for your inquiry! This is a good question and there are a few things to consider. Firstly, historically slotless motors were significantly more expensive and this is true for most of our competitors because the manufacturing is more difficult, but we have invested in a newer design and removed much of the manufacturing burden so our premiums are only about 5% typically. Secondly, slotless motors do have higher inertia (about double) and this can be a disadvantage if your total system inertial is very low or about equal to the motor inertial but in most application the system inertia is typically 10 times the motor inertia so there is very little disadvantage. In fact in the vast majority of cases the higher motor inertia is a benefit because tuning is easier. The third thing to keep in mind is that if you want to achieve the greater torque this motor can produce you will need more current from the drive so a larger drive may be required to achieve the full performance the motor can offer. Please feel free to contact us directly at Info"at"Infranorusa.com and we will be happy to review your specific application and provide objective feedback. We also manufacture traditional brushless motors so we can provide that as well if it is a better fit.

It would be great of you to tel me esc to be used, kv ratings, maximum operating voltage current temperature, also maximum power output

@@pratikraut7552 Thanks for your question. Typically, our FP [three-phase brush less and slotless] range of motors have an insulation max temperature of 155 C. They come in 8 different frame sizes totaling 16 options including different stack lengths. Voltages go from 48 Vdc to 680 Vdc. Depending on the voltage used and current available from the drive we can get up 55 kW max power. We are capable of a lot of customization including windings, shafts, flanges, feedbacks, cabling and so on. For more information please visit our website at www.infranor.com or contact us at info"at"Infranorusa.com.