ZENFORD ZEIGLER Vertical Mill retrofit

[joeavaerage]

Hi,
my 750W servos draw about 100mA from a 230VAC supply. Only when they have to supply torque do they start using current. My machine weighs 800 kg, so the X axis table weighs about 200kg.
The X axis servo never goes over an 1A or so in my observation.

Craig

[BPE3976]

Hi,
my 750W servos draw about 100mA from a 230VAC supply. Only when they have to supply torque do they start using current. My machine weighs 800 kg, so the X axis table weighs about 200kg.
The X axis servo never goes over an 1A or so in my observation.

Craig

Hi Craig,

Thats what I needed to hear. My machine weighs close to 3200kg, the x+y table weighs about 350kg and can take about another 350kg on the table. It is running linear bearings, so its very light to move considering its weight.

I'll have another look at servos. The original dead dc servos were rated to 6nm and Max at 12nm, they were also mounted to reduction gearboxes of a 4:1 ratio. I'll see what's available to replicate the same torque rating. I know modern AC servos will eat 40yr old DC servos all day, every day.

Thanks,

Shane Barnett

[joeavaerage]

Hi Shane,
I use Delta servos on the basis of performance and cost.

There are cheaper Chinese made servos, and while I have no doubt they work, they have poor documentation, questionable backup and often no set up and tuning software....not recommended.

Delta is a Taiwanese brand made in China, and DMM is a Canadian brand made in China. Both are good quality, performance and backup and most importantly with good setup and tuning software
at fair prices. To be sure they are more than el-cheapo Chinese, but neither are they eye-watering Yaskawa or Siemens.

750W Delta B2's I buy for $438USD/kit (servo, drive and cables) and are pretty good value for money. 2.4Nm rated and 7.1Nm overload, 3000rpm rated, 5000rpm max.
You might be tempted to go bigger, although I can attest to how damn fast and powerful these 750W units are, but these 1.5kW B2's are 130mm frame for 7.2Nm rated, 21Nm overload
at 2000rpm rated and 3000rpm max for $750USD/kit

https://www.fasttobuy.com/cnc-router...le_p28102.html

These are the 750W units, I've bought ten of them over 3.5 years at this price:

https://www.fasttobuy.com/flange-80m...er_p28084.html

Craig

[BPE3976]

Hi Shane,
I use Delta servos on the basis of performance and cost.

There are cheaper Chinese made servos, and while I have no doubt they work, they have poor documentation, questionable backup and often no set up and tuning software....not recommended.

Delta is a Taiwanese brand made in China, and DMM is a Canadian brand made in China. Both are good quality, performance and backup and most importantly with good setup and tuning software
at fair prices. To be sure they are more than el-cheapo Chinese, but neither are they eye-watering Yaskawa or Siemens.

750W Delta B2's I buy for $438USD/kit (servo, drive and cables) and are pretty good value for money. 2.4Nm rated and 7.1Nm overload, 3000rpm rated, 5000rpm max.
You might be tempted to go bigger, although I can attest to how damn fast and powerful these 750W units are, but these 1.5kW B2's are 130mm frame for 7.2Nm rated, 21Nm overload
at 2000rpm rated and 3000rpm max for $750USD/kit

https://www.fasttobuy.com/cnc-router...le_p28102.html

These are the 750W units, I've bought ten of them over 3.5 years at this price:

https://www.fasttobuy.com/flange-80m...er_p28084.html

Craig

Hi Craig, thanks for that, I can get delta's locally for relatively cheap pricing (I'm in Melbourne Australia) the only Chinese servos I've seen with any tuning software are from Hanpose. That being said, I've used yaksawa in my job (very expensive) and fanuc (you better believe they are expensive! Lol) both are great, but my behind would hurt for some time after purchase.

Deltas would be my go to.

Thankyou,

Shane Barnett

[pippin88]

How much do they want for Deltas locally? (I'm in NSW)

I bought mine OS, really just assumed they would be super expensive in Aus

[BPE3976]

How much do they want for Deltas locally? (I'm in NSW)

I bought mine OS, really just assumed they would be super expensive in Aus

I'll get a quote when I'm back home (another week) and let you know.

Cheers,

Shane Barnett