Sherline Spindle - 2010 mill

[itolond]

Hi Forum,

my stock 90V Spindle motor decided to give up the ghost (tripping the house circuit and overheating etc...). In light of this I need to replace with stock unit or look for another option/s. from what I understand the stock spindle is 6800 RPM capable and equates to 0.08 HP . Any suggestions in terms of power / duty cycle and generally 'better' stuff?


FYI - Sherline 220v metric - 2010 mill

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[DonKes]

How does RPM equate to HP ?

Don

[itolond]

How does RPM equate to HP ?

Don

it doesnt

[louieatienza]

How does RPM equate to HP ?

Don

Well, actually the amount of torque applied over a specified amount of time...

[awerby]

It could be the motor, but it could also be the speed control that's burned up. If you send it to Sherline, they'll figure out which it is and sell you a replacement.

While .08 HP doesn't sound like a lot, with one of these full-wave DC motors you get a lot more torque than with a regular AC split-phase or induction motor, and you get it at whatever speed it's dialed at. These are continuous-duty motors, and as Sherline points out on their site, they far outperform the 1/2 HP motors they used to use. I'm not sure you'll find a better motor without getting one that's a lot bigger and heavier. See 3308 Headstock and Motor Unit with ER-16 Spindle Nose - Sherline Products