KP-55 Spring 520K20

This is a coil spring designed as a replacement part for KUPA’s KP-series handpieces, particularly the KP-55 and KP-55B, as well as some Medicool models (20K, 35K). It helps maintain internal tension and alignment among components exposed to axial forces inside the tool. Features Restores correct preload/tension within the handpiece’s internal assembly, helping reduce internal play or looseness. Contributes to consistent alignment of rotor/spindle parts under load, improving stability at high RPMs. A worn or fatigued spring can degrade tool performance (more vibration, noise, reduced precision), so replacing it is part of proactive maintenance. Cost-effective replacement: replacing a small part like this is far cheaper than dealing with damaged bearings, shafts, or housings. Installation Tips Confirm the existing spring matches the dimensions above (especially length and diameter). Ensure that you're replacing the correct spring in the correct location — there may be multiple springs or versions inside. When installing, seat the spring properly (not bent, not misaligned) so it exerts uniform pressure as designed.