Choosing Ratio and Coolant
Two of the easiest ways to get a driven tool wrong: mismatching the output ratio to your spindle speed and torque, and forgetting to check what coolant supply your turret actually gives you.
Ratio
A driven tool's output speed is your turret's drive speed multiplied (or divided) by its internal ratio — commonly 1:1 or a step-up/step-down ratio depending on the head. A 1:1 head gives you the drive's own speed and torque; a step-up head trades torque for a higher output speed, useful for small-diameter drilling or milling where you need RPM you can't get directly from the turret drive. Check the tool's rated max RPM and torque against the job, not just the ratio number in isolation.
Coolant
Driven tools are typically offered with external coolant, internal coolant through the tool centre, or high-pressure internal coolant for deep or difficult drilling. Mario Pinto's polygonal C32–C63 quick-change interface (to ISO 26623-1) supports internal coolant at up to 80 bar and speeds up to 12,000 rpm. Whichever you choose, it needs to match what your machine's turret can actually deliver — there's no point specifying high-pressure internal coolant if your turret only feeds external.
Getting it right first time
Tell us the job (material, hole size and depth, or the milling operation) alongside your machine details, and we'll recommend the ratio and coolant arrangement rather than leave you to guess from a spec sheet.