A-dec Handpiece Repair

Repair for A-dec handpieces of every generation, from the A-dec|W&H line to the KaVo and Midwest handpieces A-dec offers today. Every repair goes through our six-step testing process before it ships back.
- From $129
- Free prepaid shipping label
- 2–3 business days on the bench
- 6-month parts & labor warranty
A-dec Repair Pricing
Starting prices for the A-dec repairs we see most. You get a written estimate before any work begins, and if the teardown turns up more, you approve the new figure before we go on.
High speed
New bearings, springs, spacers and turbine O-rings in your existing turbine, with the chuck inspected.
A new turbine with a new chuck, for when the turbine and chuck are past rebuilding.
Low speed
Contra angles and straight attachments taken apart, rebuilt as needed and torque-tested.
Inspected, worn or damaged parts replaced, then tuned, cleaned and lubricated.
Electric
The basic rebuild replaces the shaft gear or head gear and bearings, plus springs, spacers and O-rings. Bigger rebuilds are quoted on your estimate.
Can’t be repaired? There’s no repair charge. You just pay a small fee for return shipping and handling.
Every repair ships back with a 6-month parts and labor warranty, or 1 year with our warranty add-on.
More detail on our high speed, low speed and motor and electric handpiece repair pages.
How to Send It In
- 1
Get your free label
A free prepaid shipping label reaches your inbox instantly.
- 2
Pack it with its coupler
Send the handpiece with its coupler, or the attachment with its motor. It’s hard to tell which half is at fault, and a worn one left behind can make a good repair look like it didn’t work.
- 3
Free evaluation
We look it over and send you a written estimate. Nothing is repaired until you approve it.
- 4
2–3 business days on the bench
Repaired, then put through our six-step testing process.
- 5
Back to your operatory
It ships back covered by a 6-month parts and labor warranty, or 1 year with our warranty add-on.
Always ship with the prepaid label we email you. It’s how we identify and track your handpiece.
Which A-dec Handpiece Do You Have?
A-dec has built dental chairs and delivery systems in Newberg, Oregon, since 1964. The handpieces sold under its name have come from more than one maker over the years, so an A-dec handpiece can be one of a few different things. We repair all of them, and you don’t need to know which one you have before you send it.
The A-dec|W&H line
Built by W&H
For years, A-dec’s own handpieces were built by W&H and sold under the A-dec|W&H name, in the Synea and Alegra lines. Inside, they’re W&H handpieces.
W&H handpiece repairThrough A-dec since 2021
KaVo
Since its 2021 collaboration with KaVo, A-dec has offered KaVo handpieces: air-driven, electric and hygiene handpieces from KaVo’s Master, Expert and Smart series, plus couplers and air motors.
KaVo handpiece repairThrough A-dec today
Midwest
A-dec also offers Dentsply Sirona Midwest handpieces, couplers and air motors, and in 2026 it began building the Midwest Motor System into its A-dec 500 Pro and 300 Pro delivery systems.
Midwest handpiece repairWhichever one you have, it gets the same free evaluation, the same written estimate and the same six-step testing process.
Why A-dec Practices Send Us Their Handpieces
Every brand on the chair
A-dec|W&H, KaVo, Midwest and the other brands in your operatories, repaired in one shop on the same terms. See all the handpiece brands we repair.
Six-step testing process
Every repair goes through it before it ships back, and we check for heat with a top-of-the-line laser heat gun.
You approve the price first
A written estimate before any work begins. Nothing is repaired until you say yes.
Family-owned since 2019
More than 23,000 repairs for 400+ dental practices nationwide.
When to Send It In
You don’t need to know what’s wrong. If you notice any of these, send it in and we’ll find the fault.
- A new noise or a change in pitch
- Vibration you can feel in your hand
- A bur that slips or won’t stay put
- Less power, or it stalls under load
- A light that’s dim or out
- Water spray that misses the bur
If you do know what’s wrong, put a note in the box so we can start there.
Frequently Asked Questions
The questions A-dec practices ask us most before sending a handpiece in.
Are A-dec handpieces made by W&H?
The A-dec|W&H handpieces are. They were built by W&H, so inside they’re W&H handpieces, and our W&H handpiece repair page covers that line in more detail. The handpieces A-dec offers today also include KaVo and Dentsply Sirona Midwest models. We repair all of them, and you don’t need to know which one you have before you send it.
Do you repair the KaVo and Midwest handpieces we bought through A-dec?
Yes. KaVo and Midwest high speeds, low speed attachments, low speed motors and electric attachments get the same repair whether they came through A-dec or another dealer: a free evaluation, a written estimate, then our six-step testing process before they ship back. Our KaVo and Midwest handpiece repair pages cover those brands in more detail.
Should I send the coupler with my A-dec handpiece?
Yes. Send the handpiece with its coupler, or the attachment with its motor. It’s hard to tell from the chair which half is at fault, and a worn one left behind can make a good repair look like it didn’t work.
What is covered under the warranty?
Every A-dec repair ships back with a 6-month parts and labor warranty, or 1 year with our warranty add-on. You get a free evaluation and a written estimate before any work begins, and if a handpiece can’t be repaired, there’s no repair charge. You just pay a small fee for return shipping and handling.