Dental Handpiece Turbine Repair – Do it Yourself

Dental Handpiece Turbine Repair / Replacement User Guide

How to repair dental handpiece turbine


Inspecting a dental Turbine

Before starting dental handpiece repair / replacing the dental cartridge named also dental rotor, carefully examine the handpiece head for dents.

The dents on dental Handpieces are caused by drop of hanpiece and can be fixed by repair guys , repair shops which specialise and dental handpiece repairs. You will ask why specialised repair handpiece shops, the answr is yes because removing/repaing the dents on dental handpieces need special tools and also skills which you can get after tons of instruments. If there is any evidence of dents in the head of dental handpiece, send the handpiece to your dental engineer or dental repair shop for repairs.

Drops of the handpieces also can cause damage of other intrnal parts of handpiece also which are very fragile like fiber optics. P.S. You can find our range of fiber optics for dental turbines and Conra angles here.

VERY IMPORTANT! Do not install a new dental rotor into the handpiece in case there are external damages. The installation of the new dental rotor/turbine in a damaged head will result in permanent damage to the dental High-speed handpiece. Alternatively, you may purchase a handpiece dental turbine cavity reamer /head expander from to remove the dents on your own but as with any repairs, you must have special skills.

dental handpiece repair user guide

REMOVAL Damaged Handpiece Parts :

Every Dental Handpiece has it own design and size of Head, and every Push button is different from model to model and also by handpiece manufactures and you can find Wrenches for Push Buttons also named Back Caps which can be compatible between models like KaVo has different handpiece models which have the same size and design with identical number of pins and are suitable between them but you can not use same Service push button key for KaVo turbines with NSK Turbines because are completly different.

1. Using a specialized dental back cap key/ push-button Wrench, unscrew the dental back cap from the handpiece head and remove the worn dental turbine by pushing out from the front. Only use the appropriate tool to remove the end cap. Use of pliers or inappropriate tools will cause damage to your dental handpiece.

2. WARNING: Interior of the head must be inspected for foreign material and debris—remove if present. Compare a worn dental rotor to a new dental turbine to identify any components that may still be present in your handpiece. Use a scaler or explorer to remove all old dental turbine components including any shims, o-rings, washers, or bearing retainers. Once all old dental turbine components have been removed, use a cotton swab and dental handpiece lubricant to clean the dental handpiece head. Using air from the air/water syringe, blow out the handpiece head to remove any cotton fibers.

INSTALLATION of Dental Cartridge/Rotor/Turbine:

Our Dental Cartridges/Rotors Repair Kits are assembled with German Ceramic Bearings and come in kit with O-Rings and metal Washers if this dental turbine is designed to have with metal washers.

1. The dental turbine/cartrdige also a lot of dentist use term as the dental rotor is provided with two o-rings which must be replaced by the existing turbine o-rings because are burned in time and autoclavable and it loses their properties and functionality in time. One o-ring fits into a groove in the front (bur end) of the handpiece, the other o-ring must be fitted into a groove in the dental back cap end. You may need to use a scaler or explorer to remove the old o-rings from your dental high-speed hand piece and end cap. A burnisher or similar blunt instrument may be helpful when installing the new o-rings to make certain they are fully seated.

Special attention must be paid to the o-rings to ensure that the old o-rings are completely removed and the new ones are not misaligned, twisted, or otherwise out of place.
2. Generously lubricate the interior of the dental handpiece, paying particular attention to the o-rings. Holding dental handpiece face down, insert dental turbine fully into dental handpiece head. The dental rotor bearings each have a small lip that will rest against the o-rings. Using the appropriate tool, screw the end cap down until flush against the handpiece head. CAUTION: The end cap should be tightened securely with a special wrench to ensure the safe positioning of the dental high-speed turbine. If you are unable to fully seat the end cap, remove and check the end cap for debris/old turbine components. If the difficulty persists, send the replacement dental rotor and handpiece to a dental repair shop for installation.

Here is complete Video user guide how to disassemble and assemble Dental High Speed Handpiece.

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