wto CoolSpeed mini User manual

CoolSpeed mini spindles are driven by through-coolant or oil.
They provide for very high rotation speeds while maintaining perfect run-out values.
CoolSpeed mini is designed to machine the workpiece top surface and perform milling, drilling, chamfering and
engraving. It requires no machine adaptations, it fits into standard –sealed –tool holders, and several CoolSpeed
mini units may be applied into the machine magazine during the machine set-up.
The CoolSpeed mini spindles provide for significant cost reductions, including:
–Longer tool life
–Shorter machining times
–Longer main spindle life
–Freeing machine to perform other tasks

•This chart illustrates the logarithmic nature of
the rotation speeds measured at different
pressure levels.
•The formula displayed within the chart can be
used to calculate the rotation speed at any
pressure level.
•The curve and equation relate to average
values. The actual results lie within a small
variance from the curve.
•The labeled “Water Pressure” may refer to any
liquids with similar viscosity as water (i.e. all
types of emulsion/cooling liquid).
•The rotation speed levels shown here are the
no-load speeds (i.e. no torque acting upon the
shaft).

•This chart illustrates maximum and
recommended output power levels
measured at different pressure levels.
•The formula displayed within the chart can be
used to calculate the output
power at any pressure level.
•The max output power curve is meant as a
reference only and should not be
used for an actual job. Working near this curve
will put the spindle at risk of
operating failure and damages may result.
•It is suggested to locate the job’s required
output power close to or below the
“Recommended Output Power” curve,
resulting in improved speed stability.

•This chart illustrates the relationship between
the torque and the actual rotation speed.
•The formula displayed within the chart can be
used to calculate the torque at any rotation
speed. Notice that by definition, maximum
torque occurs at zero rotation speed resulting
in no power. Likewise, at maximum rotation
speed there is no available torque, therefore
producing zero power.

•This chart illustrates the parabolic relationship
between output power and rotation speed at
different pressure levels. Notice that there is
no power available at zero and at maximum
rotation speeds.
•This chart illustrates that any external load will
cause a reduction in speed; the more power
demanded, the greater the speed reduction.
To the right of the peak lies the working area
of the spindle, the peak being its limit. The
spindle will stop rotating should the power
exceed “Max Power”.

Replacement Kit
The replacement kit includes 2 bearings and 1 turbine.
It is replaced with each new tool (drill or mill).
There are unique replacement kits for tool shanks:
•3 mm, 4 mm, 6 mm
•1/8” , 3/16”, 1/4”
* Tool is not included.

Assembly Device
The Assembly Devices are used to assemble the bearings and turbine
onto the tool shank.
Each diameter is unique and includes a precise ring inside.
There are separate assembly devices for tool shanks:
•3 mm, 4 mm, 6 mm
•1/8” , 3/16”, 1/4”
* Do not attempt to use alternative devices as you will damage the
bearings and the CoolSpeed mini will not perform.

Pressure Device and Gauge
•The pressure device is used to measure the through coolant pressure
at the main spindle end.
•This value is critical as it is used to calculate the CoolSpeed mini
rotation speeds.
•The device fits into standard –sealed –tool holders,
with ID 25 mm / 1 ”.
•The gauge is a standard pressure gauge; ¼ BSP thread,
60 bar, rear screw.