[smart81bg]

Hello Dears,


I have a burned-out steper motor : 86BHH76-400B-35J with technical data: Current: 4A, Inductance: 3.5 mH, Resistant: 0.62 Ohm
Can I replace it with 85BYGH450A-06-05J - Current: 4A, Inductance: 2.3 mH, Resistant: 0.5 Ohm

The difference are Resistant and Inductance.

My power supply is 70V AC and stepper driver dma860h. Machine works on low feed rate.

[PCW_MESA]

Looks like it should work fine (same current/torque)
Lower inductance so maybe a bit better high speed performance
Lower resistance so less power dissipation

[smart81bg]

Thanks Dear,

are 70 Volts for the Inductance: 2.3 mH OK?

[PCW_MESA]

Thanks Dear,

are 70 Volts for the Inductance: 2.3 mH OK?

It should be fine, ripple current will be higher but I'm pretty sure the
DMA860 has a 50 KHz or so switching frequency so the ripple will be minmal

[smart81bg]

It should be fine, ripple current will be higher but I'm pretty sure the
DMA860 has a 50 KHz or so switching frequency so the ripple will be minmal

Thanks I will try, Hope will no damage anyting, Yes it is 70V AC.