UP-200 Set Ring UG10-209
This set ring (part # UG10-209) is an OEM replacement part for the KUPA UP-200 / UG12 series handpieces. According to the parts listing, it is made of stainless steel. The “set ring” is a critical component used to secure or align parts in the handpiece’s front or motor housing assembly, maintaining proper spacing and stability during high-speed rotation.
Features
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Maintains Precision Alignment: Because high-speed handpieces rely on tight tolerances, the set ring helps keep internal assemblies correctly located, reducing wobble or vibration.
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Durability: Made from stainless steel, it’s designed for repeated high-speed use and wear resistance.
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OEM Fit: Using the correct part ensures compatibility with original internal geometry, avoiding issues from non-spec parts.
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Preventative Maintenance: Replacing the set ring during servicing can help restore professional feel and reduce the risk of misalignment-related wear on more expensive components (bearings, spindle, collet).
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Application: Used in the front/middle section of the UP-200 / UG12 handpiece to maintain alignment of assemblies, secure components and ensure concentric operation under high RPM.
Installation Tips
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Confirm your handpiece uses this exact part number; some variants or older revisions may use a different set ring specification.
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Inspect the housing or groove where the ring fits for wear or deformation; even with a correct ring, if the groove is damaged the fit may be compromised.
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Disconnect and power off the handpiece; ensure the motor is stopped.
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Disassemble the relevant section (front housing or middle assembly) to access the ring location.
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Carefully remove the existing ring, clean out any debris or metal shavings.
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Insert the new UG10-209 set ring, ensuring it seats fully and evenly.
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Reassemble the handpiece and perform a no-load test (without bit) to check for smooth rotation and minimal vibration before returning to full use.