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Frameless Motors for Robot Joints

Joint frameless motor is a professional robot joint design, development and production. The motor has large hollow aperture, which can ensure the perfect combination of joint modules. The stator and rotor mechanism of the motor is compact, and the rotor is made of high performance rare earth permanent magnet material. The torque ripple of this series of motors is very low, and it is easy to control speed and locate accurately. It has small rotational inertia and fast dynamic response.

Features of Frameless Motor for Robot Joints

Motor parameters Units 5420 6013 6425 7631 8427 10031
Rated power W 118 118 200 308 400 750
speed@Rated power rpm 4300 4000 3000 2300 3000 2000
 Rated voltage V 48 48 48 48 48 48
Rated torque Nm 0.42 0.44 0.9 1.7 1.76 4.3
Continuous current A 4.7 4.6 6.1 9.2 11.5 19.6
Peak torque Nm 1.4 1.45 2.8 5.52 5.2 11.7
Peak current A 16.1 15.3 19.8 32.6 38.2 52.6
Back EMF Vrms/krpm 6.4 6.3 9.3 12.6 9.8 14.3
Torque Constant Nm/Arms 0.096 0.094 0.149 0.185 0.155 0.227
cogging torque
mNm 1.2 1.1 2.4 1.9 1.6 7.2
Phase Resistance Ω 0.77 0.72 0.51 0.18 0.12 0.08
Stator d/q axis inductance
mH 0.31 0.3 0.59 0.29 0.3 0.15
Number of poles -- 12 12 8 12 12 12
Weight kg 0.27 0.26 0.51 0.72 0.91 1.71

Product manual

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