Q: I've been using your LH series linear heads with your world K-series AC electromagnetic brake motors to position and hold a load vertically. I'm interested in upgrading my linear head and motor to your newer LS series linear head and newer RoHS type, longer-life motor. However, I noticed that the basic speeds are different. I'm using a 4RK25GN-AWMU motor and a 4LF45N-7 linear head and comparing to a 4RK25GN-AW2MU motor and a 4LSF45-7 linear head. Is this correct?
A: Actually, the basic speeds between the LH series and LS series linear heads should be exactly the same if operated at the same power supply frequency. The basic speeds of the older LH series linear heads were calculated based on 60 Hz operation (1800 RPM motor synchronous speed @ 60 Hz), and the basic speeds of the newer LS series linear heads were calculated based on 50 Hz operation (1500 RPM motor synchronous speed @ 50 Hz).
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