[JSH6318]

24" Z axis being considered for future use to machine taller formed parts ( again made from sheet metal raw material ).

However , weighing that need out against the machine's ability to cut my steel sheet product. Thinking the 5000 RPM 20HP higher torque spindle may be the ticket . ( as you give up the 24" Z axis with this 5000 RPM spindle option ).

Any insight as to how the 5000 RPM spindle will then peform on the easier to cut aluminum sheet material ? Or do I need the 10,000 RPM for optimum aluminum cutting ?

[Geof]

If you wanted to poke 1" diameter drills through thick steel plate the 5000rpm high torque spindle may be useful. In my opinion the GR machines, especially with the long Z axis, are not rigid enough to take a big cut in side milling or facing to use the extra torque from this spindle. Also the lower speed would certainly slow down the cutting of thin aluminum sheet.