Lares Handpiece Repair

557, 757, UltraLite, Euro, Ultra-Access — Lares built its name on high speeds that hold their line, and we rebuild them to hold it again. Turbine rebuilds from $129, free written quote before any work, 2–3 business days on the bench, nationwide mail-in from Colorado Springs.

Why Lares Owners Trust Us

A Lares that has gone soft rarely announces itself — the autochuck keeps grabbing burs and the turbine keeps spinning, right up until the prep tells you something is off. That quiet decline is exactly what we test for, as part of 23,000 repairs for 400+ dental practices nationwide.

How a Lares Goes Soft — and How We Catch It

The autochuck is the tell

Lares put real engineering into its push-button autochuck, and it is usually the first thing to wear. A healthy autochuck grips the bur dead-center with no measurable play; a worn one lets the bur creep or walk under side load — you feel it as chatter in the prep before you ever hear it. We check chuck grip force on every Lares that crosses the bench, because replacing a turbine while leaving a tired chuck in place is only half a repair.

The turbines themselves are conventional in the best way: quality bearings, well-machined spindles, parts that are still properly available. That is why a rebuilt 557 or 757 runs like it did the day it was uncrated — there is nothing exotic in there to compromise on, just tolerances that have to be respected. Bearings, chuck and O-rings go in as a set, spray ports get cleared, and the handpiece is run under working pressure before it ships back.

One honest note: if your Lares is older than the Euro/UltraLite era, send the model number through our contact page first. Most are still worth rebuilding — we will tell you plainly if yours is not.

Lares Models We Service

Model	What usually fails	What the rebuild includes
557 UltraLite	Turbine bearings and autochuck grip after years of daily use	Full turbine rebuild: bearings, chuck, O-rings, speed-tested
757 UltraLite	Same wear pattern as the 557 in the larger head	Same spec rebuild — bearings, chuck and seals as a set
557 & 757 Euro	Euro-backend variants — coupling O-rings add a leak point	Turbine rebuild plus coupling seal service
Ultra-Access MXE & MXL	Compact heads wear faster under equal load	Turbine rebuild, spray ports cleared, run-tested
Autochuck turbines	Bur creep or walk under side load — felt as chatter	Chuck grip restored to spec, never left half-done
Older Lares models	Parts availability varies by generation	Send the model number — honest answer before you ship

Not sure which backend or generation you have? Send the model number through our contact page and we will tell you before anything ships. What wears inside a turbine — and when a rebuild beats a replacement — is covered on our high speed handpiece repair page.

Lares Repair Pricing

High Speed Turbine Rebuilds

From $129

Exact pricing depends on the model — every quote includes parts, labor, cleaning and a full performance test, quoted in writing before any work begins.

We rebuild every major handpiece brand on the same terms and the same bench. If your operatory runs more than one, see our KaVo, Midwest, Star, NSK, A-dec and W&H, Bien-Air, Beyes, Brasseler, Young and Impact Air 45 handpiece repair pages, or browse our dental handpiece repair overview.

How to Send Us Your Lares Handpiece

Step 1 — Book your repair (you)

Start on our Book My Repair page — a prepaid USPS label reaches your inbox the same business day.

Step 2 — Box it up (you)

Sterilize and bag it, bubble wrap, sturdy carton, and a note with your practice name and the symptom.

Step 3 — We look, then we quote

Inspection is free, and nothing is opened past that point until you approve a written quote.

Step 4 — We rebuild and test it

Cleaned, rebuilt, then speed, chuck grip and spray pattern checked under working pressure.

Step 5 — Back to your operatory

Returned by UPS or FedEx — 2–3 business days on the bench, 6-month parts and labor warranty.

Common Lares Issues We Fix

Tap the markers on the handpiece to see where a Lares wears first — then flip the cards below for what we do about it.

Lares high speed dental handpiece with head close-up showing chuck and spray ports

Bur Creep & Chatter

The autochuck grips — but not true. Flip for the fix.

Chuck Grip Checked

Grip force measured on every rebuild; a new chuck comes with the new turbine on the $159 repair. Run-out verified before it ships.

Whine at Full Speed

It still cuts — it just doesn’t sound right anymore. Flip for the fix.

Bearings as a Matched Set

A rising pitch means the bearings are going. They are replaced as a matched set with new O-rings — never one at a time — then run under working pressure before return shipping.

Burs Running Hot

Still cutting, but the prep is running warm. Flip for the fix.

Ports Cleared, Pattern Proven

Heat at the prep is usually water that never arrives. Spray ports are cleared and the pattern verified under working pressure on every rebuild — it is part of the job, not an add-on.

Frequently Asked Questions

Do you repair both the 557 and 757 lines?

Yes — 557 and 757 in UltraLite and Euro trim, plus the Ultra-Access MXE and MXL. Every repair ships back with a full 6-month parts and labor warranty, a free written estimate up front, and a free prepaid USPS label to get it to us.

My autochuck still grips — why does the prep feel rough?

Because grip and grip-true are different things. A worn autochuck can still hold the bur while letting it run off-center under side load, and that runout reaches the tooth before it reaches your ear. We measure chuck grip on every Lares; the $129 rebuild inspects it, and the $159 new turbine includes a new chuck.

Is an older Lares still worth rebuilding?

Usually, yes — parts for the mainline models are still properly available. For older generations, send the model number through our contact page first and we will give you an honest answer before you ship. If a handpiece cannot be economically repaired, there is no repair charge — a flat $29 covers shipping and handling and it comes back to you.

What does the warranty cover?

Every Lares repair carries a full 6-month parts and labor warranty covering the components we replaced and the labor to fit them. If something is not right when it arrives back, reach us through our contact page and we will make it right.

How long will I be without it?

2–3 business days on the bench, plus carrier transit each way on the prepaid label — about a week door to door for most practices.

Get Started!

Click below for our easy two step repair service!