Makino has developed a unique, high-torque spindle that is the most powerful
and productive integral drive spindle on any machine in the world. The new
spindle will initially be available on the Makino a81, the largest of the
popular 1-Series machines, which provides unparalleled productivity and
reliability and helps customers reduce costs from their manufacturing
operations.
Optimum Blend of Speed and Rigidity
The Makino integral drive spindle greatly outperforms all other spindles on
the market due to the nature of its special design, which provides
significantly higher torque at a low RPM. The proprietary design of the
integral drive spindle combines the optimum blend of speed and superior
rigidity necessary to take aggressive cuts.
Other high-torque spindles utilize a geared-type head. Such design
intrinsically causes a loss of significant power that further drops spindle
efficiency, which can slow down the spindle performance and adversely affect
cycle times.
The Makino integral drive, high-torque spindle has no corresponding loss of
acceleration and deceleration. The acc/dec ranges from 1.5 seconds at 4,000
RPM or 4.3 seconds at 8,000 RPM.
Performance
The Makino high-torque, integral drive spindle has an available 744 foot
pounds (1,009 Nm) of torque from zero to 392 RPM. To match that torque, the
spindle employs 50 hp from 2,000 to 5,000 RPM. This duty rating and
continuous output of the Makino spindle lends itself to difficult cutting
scenarios and with tough and hard metals such as stainless steel, titanium,
nickel-based alloys, cast or ductile iron and CGI (compacted graphite iron).
Long reach and large diameter boring operations require a great deal of
torque, particularly at low RPM. For applications such as tapping, where a
significant amount of spindle stopping, starting and reversal occurs, the
Makino high-torque spindle is significantly faster and has less idle time.
The Makino high-torque, integral drive spindle employs a standard CAT
50-taper toolholder, with an HSK-A100 as an optional interface.
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