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Buying the best used brake lathe.

Updated on October 24, 2011

Ravaglioli F40

If you are in the market for a brake lathe, you may have considered buying a used one. There are an amazing range of makes and models that can machine disc rotors alone or disc rotors and brake drums using a separate cutter bar. The West and some others will also machine flywheels and other flat surfaces that can be mounted.

The only non brake machining I have ever needed to do on my brake lathes is to polish or resurface the cups and holding tools from the brake lathe itself, so the flywheel option was never of great interest to me.

Amongst the used brake lathes on the market there are a few to avoid if you want good parts supply, back up service and no design faults that you have to work around.

For example, the early Ravaglioli had an aluminium alloy cutting head fixed on one side. When the aluminium wears, which it does, it is very difficult to set it up the brake lathe to do an accurate cut, and it is inclined to resonate and vibrate the disc during the machining. Parts like the diaphragm or concertina that covers the feed shaft are expensive and can be hard to find too.

Both problems can be solved with some innovation, so if you have lots of skill and little money, you may want to take it on. They are otherwise very good brake lathes.

Pay up to $4k for one with no faults. Pay $1.5k for a sound machine that needs some repairs.

  • Parts can be difficult to find.
  • The design of the drive is antiquated.
  • The arbor location lock is poorly designed.


FMC 600 series

The FMC 600 is a great machine, but has plenty of small faults.
The FMC 600 is a great machine, but has plenty of small faults.

FMC 600 Feed drive nut

Here is one I made Looking from both sides. Click to enlarge.
Here is one I made Looking from both sides. Click to enlarge.

FMC 600

A very good brake lathe that can still be found in good order, although getting a bit jaded because the later model one was better fitted out, with less problems to keep it adjusted and running smoothly.

Here is what to look for.

  • The of/on switch gets replaced but not sealed properly and can fill up with oil.
  • The belt and electric motor pulley can get very worn and interfere with the cut.
  • It is important to run later model bull-nosed cutters in these models for best results.
  • They break detent springs.
  • The crossfeed shaft adjustment is finicky and unreliable if the operator is not on the ball it will move on it's onion nut. These shafts can be upgraded to the JB special model which is simply a later model FMC, and retains most of the original lathe.
  • The main drive nut wears out quickly if not kept well lubricated. This is quite expensive to replace. So expensive that I made a few for myself out of the same high quality materials in the original.

Pay up to 3k for one in mint condition, 1k for one that needs tooling up and refurbishing.

There are still a lot of parts available for the early 600 model and tooling is no problem at all as the newer model tools are identical.

This is a 39 year old Ammco. It is in perfect condition and was sold from my auto repair equipment business after being re-furbished.
This is a 39 year old Ammco. It is in perfect condition and was sold from my auto repair equipment business after being re-furbished.

Ammco.

All the Ammco brake lathes regardless of model will do what they were designed to do and do it longer and better than any of the others listed here.

With the heavy duty model disc/drum Ammco you can get a truck kit, which consists of a massiive arbor, all tools including truck disc mounting cones, cups and support for the large truck drums.

I have refurbished, re-tooled and completely rebuilt dozens of early model Ammcos some more than 40 years old. They have all been capable of running to new machine specifications after being repaired or re-tooled and adjusted.

Pay up to $8k for a later model with a chuck fully tooled up, $3-4k for an early one in good condition, or $1-2k for one that needs a lot of work.

Kwik-Way

The Kwik-Way is a small brake lathe with a standard lightweight cutter similar to the on-car cutter heads. It works well, but will not handle the heavy work that an Ammco, JB, FMC or anyof the other leading names that use a heavy cutter head to avoid vibrations and oscilations that take place when machining discs.

  • Parts are getting harder to find but as long as the main drive is still in good shape most other bits can be found.

Pay up to $3k for a mint one with all tooling, $500 to 1k for one that needs any work.

Repco

Repco.

This Australian made brake lathe is beautifully built and has the strongest cutter assembly on any brake lathe I have seen. It is very heavy with huge bearings and gears. These lathes are not common any more but a good one will do a perfect job on any disc.

Having a tailpiece for the arbor, it is somewhat like a metal lathe as is the ravaglioli above.

The arbor being portable so the disc can be mounted before the arbor is located is not an ideal system though and the drive can be damaged with time or careless tooling.

Pay $3k for one in top condition.

  • Parts are hard to find.

Technodue

The Technodue B600 is another very good brake lathe that has few problems and a strong heart. These are very nicely finished well made and reliable in the main. Not my favourite though, as tooling is quite specific and oddly different, so it can be hard to tool up.

I don't like the way the cutter assembly is mounted as it tends to be too sensitive to set up having the one bolt and a long offset to the cutting head puts a lot of force on the sliding part of the cutter.

West

This early model is not a good one to buy.
This early model is not a good one to buy.

West.

I may be a bit biased here! I have spent a lot of hours working on their early 3 motor model. Beautifully built and badly conceived they have a chain drive on the feed, which was piss poor and broke regularly.

The motors and switching is complex and expensive to repair, if you can get a technician who will even work on one. The new models are much simpler and seem to be OK, but I will wait and see.

The attractive thing about the west is the price. If you shop hard for a late model one you will get it pretty cheap compared to a used Ammco or JB as they are a lot cheaper new. The later model West also machines flywheels.

Pay up to $4k for a late model one, don't buy an early model one unless you are an expert, and even then you will need another one for spares.

Zanrossi

Zanrossi

Zanrossi disc grinder.

If you want to grind your discs instead of machining them, then this is one of the best of the grinder types. These machines will rip off as much as an eighth of an inch of material, so save time on badly grooved discs that have a lot of metal left before the minimum cut thickness is reached.

Setting up is similar to a brake lathe with cones to lock the disc in place.

Suitable for resurfacing discs where metallurgy is outside standard parameters, or to do special jobs where machining is not suitable. Fitted with the newer cubic boron nitride grinders it does a very accurate and finished job in one pass.

Comments

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    • profile image

      Engine Rebuilding 

      4 years ago

      The main feature of the machine is to allow the reconditioning of brake discs, drums, cylinder heads, engine blocks and flywheels , just with one single machining unit.

      http://www.carmec.eu/brake-disc-lathe

    • earnestshub profile imageAUTHOR

      earnestshub 

      7 years ago from Melbourne Australia

      Not easy Mico, a brake lathe is expensive and needs operating skills that many don't have, and you can always have discs machined at a brake place for 12 bucks each if you are in the motor trade.

    • profile image

      Mico 

      7 years ago

      Surely there is a place that offers lathe machines on rent. http://www.micocrane.com

    • earnestshub profile imageAUTHOR

      earnestshub 

      7 years ago from Melbourne Australia

      Thank you crystolite, you're most welcome!

    • crystolite profile image

      Emma 

      7 years ago from Houston TX

      Nice article,thanks for sharing.

    • earnestshub profile imageAUTHOR

      earnestshub 

      7 years ago from Melbourne Australia

      Hi hardlymoving.

      Yes, you do need some business to make one pay, but you only need 3 or 4 average paying jobs a day to pay for the brake lathe and make a profit. Market tests conducted by SPX have shown, they also add to your bottom line in other sales areas.

      A brake lathe will add around 2.5k a month to gross sales on it's own.

    • earnestshub profile imageAUTHOR

      earnestshub 

      7 years ago from Melbourne Australia

      Thanks for checking in to have a look Bob. I like brake lathes, the engineering is beautiful to me.

    • earnestshub profile imageAUTHOR

      earnestshub 

      7 years ago from Melbourne Australia

      I can't disagree with you on the Repco ag, it is a beauty. The ready availability of parts is the main reason I would still nominate the Ammco to buy used

    • hardlymoving profile image

      hardlymoving 

      7 years ago from Memphis, TN

      Really informative article. But I've checked the prices of used lathes on Ebay and they are very expensive and shipping costs are high as well. I'd have to do hundreds of disc brake jobs to have the machine pay for itself vs a local parts shop that charges $12 per rotor.

    • diogenes profile image

      diogenes 

      7 years ago from UK and Mexico

      I expect hell will freeze over before I need a brake lathe. But this hasn't stopped me enjoying this excellent and well directed article on the subject. You have a nice niche by the tail here, Earnesthub...Bob

    • agvulpes profile image

      Peter 

      7 years ago from Australia

      Earnestshub a great selection of used brake lathe on this Hub. I wear my heart on my sleeve here in nominating the Repco Brake lathe as the Rolls Royce closely followed by the Ammco as the Best used brake lathe available today!

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