The PK motors deliver dramatically higher torque than comparably sized motors. Since they are the same external size as other models (although shaft diameters are different), PK motors are perfect for applications where you want a little higher torque. Simply switch motors and the torque would be 1.5 times higher. The PK motors are also recommended for applications where smaller equipment is needed, since a smaller motor can now drive the same equipment.
2. Low Vibration
The PK motors do more than provide higher torque, they are also designed to produce less vibration. This makes PK motors the ideal choice for micro-step drives.
3. Low Noise
Changes in the PK motor design have also reduced vibration. The entire motor structure has been revamped to reduce noise.