Jackson Research originated the first "Slotless/Wide
Airgap" motors. The US Navy retro-fitted their entire submarine
fleet for silent running within twelve months of patent issue. Lawrence
Livermore Resarch Laboratories incorporated Slotless motors in Diamond
Tooled milling machines for machining mirrors due to the absence
of vibration, cogging, and ripple torque. Kodak DataTape (now Sypris)
uses them in military tape transports due to the absence of vibration,
cogging, and ripple torque which results in almost unmeasureable
flutter. The absence of cogging means a tape transport can operate
at very low tape speeds with high accuracy.
High speed spindels are known for their heat
generation. Some systems use water cooling jackets with elaborate
heat exchangers to maintain continuous speed. The Jackson Slotless
Motors operate without any special equipment because they run "Cool". |
