"Chinese" spindle minimum speed
I've been wanting to buy one of those Chinese spindles for quite some time now. I'd like to use one to replace the spindle on my Taig.
One thing that is holding me back is I'm unsure of the minimum speed I can make the spindle spin. The auction descriptions usually say 6000 or 8000 up to 24000. Since the VFDs can output 3 phase power between 0 and 400 Hz I know 400 Hz = 24,000 RPM. I am guessing 100Hz = 6000 RPM. What happens at frequencies lower than 100 Hz?
Through reading the VFD thread it looks like the VFD's default frequency is 50Hz. People who have run their air-cooled spindles at that frequency have burned them up as the cooling fan doesn't come on until 100Hz or greater. Is there anything stopping the water cooled spindles from working at 50 Hz?
If 6000 RPM is the minimum speed does that mean these spindles are mostly unsuitable for drilling? If fly cutting also out of the question? How about milling steel or using larger end mills?
Thanks!
VFD Setup and Aqua Screen - Wishlist
I recently found your (Ger21) Aqua screen and find it great to use..
I am just setting up a 2.2 Kw spindle with Mach3. As you probably would know the VFD unit has a frequency and current output via serial communications back to the DRO's. Using the Huanyang VFD plugin.
How would I display these on the Aqua screen?
Thanks Steve
Low rpm milling w chinese 2.2kw watercooled spindle?
Hi isakl,
I was wondering how your tweaking the chinese 2.2kw watercooled spindle &
Hitachi x200 VFD connection to EMC2 was progressing?
Your posts in the "Chinese spindle minimum speed" thread where very interesting, documenting the control and cutting at low rpms "200".
That was sometime ago 2011, Has your initial spindle survived? Any advice?
Thanks ohallock
Re: "Chinese" spindle minimum speed
Wow very interesting thread here, do we have some more information. I am also about to buy a couple of these 2.2kW spindels and a hitachi WJ200-022SF, does anyone know what the difference between the Hitachi WJ200 and a X200 are?
Re: "Chinese" spindle minimum speed
According to Hitachi's website, the X200 is no longer being manufactured. It appears that the model has been replaced with the WJ200.
Re: "Chinese" spindle minimum speed
Thank you for the info I will go and get the Hitachi WJ200-022SF then :). Sorry for hijacking the thread.