Hi,
to my knowledge this spindle (Jager 5.5kW) was not available at the time I bought mine. Had it been available I might have bought it rather than the new Dake (Chinese) 3.5kW spindle I did buy.
Looking at the torque speed curve the Jager is rated at 30,000rpm, that is to say that is its lowest speed at which it attains rated power (100% duty cycle, or S1). It's rated torque is therefore
1.8Nm. That is a lot better than my existing little 800W spindle (0.3Nm) but still very much less than my new Dake spindle. The new Dake will do 40,000rpm but its rated at 10,000rpm
and its S1 torque is 3.34Nm
I have been using my little 800W 24000rpm spindle for ten years, and its been great. I use it particularly for circuit boards. It would be nice to go faster than 24000rpm.....but not a deal breaker
either. It would also be nice to have more power, but again I've been able to use 800W to good effect for ten years. If there is an area where my 800W spindle is deficient its torque at
low speeds...it just does not have decent torque at low speeds and therefore VERY limited when it comes to cutting steel and stainless.
This new Dake spindle has ten times the torque and at under half (10000/24000) speed of my 800W spindle. I'm thinking that being water cooled I could expect rated torque (3.34Nm) at one
quarter of rated speed, ie 2500rpm, which would be good to drive a 12mm tool in steel. You would still have to be careful, 3.34Nm is by no means a surfeit of torque....but you can drive a 12mm tool in
steel and stainless quite happily if carefully at 3Nm.
I have decided I really don't need the extra speed (40,000 rpm vs 24,000rpm) nor do I need the extra power (3.5kW vs 800W), but what I really want is more torque at lower speeds....
so I think the Dake is a better choice for my needs which is coincidentally faster and way more powerful.
Jager is such a bloody good name as are the RegoFix toolholders, certainly has bragging rights over any Chinese made spindle.......but bragging rights don't really make better parts....do they?
Craig