CI Kasei of Tokyo, Japan has announced a new family of 12 mm OD Micro Slotless Brushless Permanent Magnet (PM) Motors used in a wide range of applications including battery operated hand held power tools, miniature compressors, micropumps and small robots.

This 4-member motor family as micro sized slotless brushless PM with integrated speed control electronics provides stall or peak torque values ranging from 0.88 mNm (0.125 oz-in) up to 1.14 mNm (0.161 oz-in).  The shorter C12C-XI-S and C12C-X2-S models use sleeve bearings and operate at 6480 rpm and 7920 rpm respectively.

The ball bearing models (C12C-X2-S-B and C12C-X2-S) are used in applications that handle heavier application mechanical loads.  All CI Kasei models have very low current consumption (below 25 ma).  The speed constant varies from 2.14 to 2.16 K_rpm/volt for the C12C-XI models the 2.60 the 2.64 K_rpm/volt for the C12C-X2 models.  All 4 slotless brushless PM motors are energized at a very low output of 3 volts DC.