At High Speed Technologies, Inc. we repair CAPTO tool clamping system with OEM components. Our technicians have trained with CAPTO Factory Representatives. If you have a spindle with a damaged CAPTO clamping system call us at 800.248.4478
Coromant CAPTO clamping system was developed in the 1980s to provide a rigid simultaneous contact system. It was well received in turning applications for automated tool change. But over the years it has found greater acceptance with milling application and it has become a standard for some major machine makers. It has also been an ISO standard since 2008.
CAPTO tool clamp system requires special tooling to disassemble and repair. But with the correct tools and training, system repair is relatively straight forward. So if your CAPTO spindle needs rebuilding send it to HST and we will also restore your clamping system back to OEM specification.
At this time, because of the complex shape, HST cannot repair damaged surfaces. Unfortunately if the tool interface surface is damaged it might mean a new shaft.
What Are Some Advantages of CAPTO Tooling?
Coromant claims numerous advantages for their CAPTO system. Some of them include:
- Balanced and concentric
- High Pressure coolant through-tool compatibility
- Higher bending strength
- Higher rigidity
We have not verified all of these claims. But comments on various machining forums show that many end users really like the CAPTO system.
Some Quotes from Pertinent Forums
“As someone who runs more capto tools than not, in all our machines, here’s my take on it. Capto’s strengths are rigidity, accuracy, repeatability and torque transmission. It’s greatest strength is rigidity.” [SIC]
“We use C5 on all but 2 of our lathes. The advantage for us is that we can have over 60 tools with known offsets. When the operator sets up a job, he loads the tools into the turret. The tool offsets are loaded by variables in the program. There is no need to build tools or touch them off.
This also allows us to run the same program on 4 different lathe models using the same tools. It really is a neat system.”
“We use Capto exclusively on our high volume steel production lathes. It is a very strong connection. The real advantages are in the repeatability, accuracy and speed at which tool changes can be made. Even with very tight tolerances, you can swap out all the tools in the lathe and have a good part on first cut. There are two sets of tooling for each lathe, no inserts are changed in the machine. You change inserts on the spare tooling while the machine is running then swap out with the capto system. It saves a lot of time.” [SIC]
HST Now Repairs CAPTO Clamping Systems
Now when your clamping system needs a rebuild HST can provide the same high quality repair as we provide in all of our spindle rebuilds. Sandvik, unlike some other OEMs wants their customers to have access to quality repair facilities. For that reason they provided HST with training and tooling. Additionally, HST can now purchase original equipment parts directly from Sandvik. Sandvik wins, HST wins, and most of all our customers win. No need to be over charged by an OEM.
Some Samples of Our Work
This Mazak Integrex spindle came to us from Sydney, Australia. The tool taper was in good condition. However, the spindle required a complete rebuild. Some foreign material got in between the tool post locking rings and caused galling.
The tool clamp system was a Sandvik Coromant CAPTO clamping system. This was an older style with double flat wound springs. (Newer styles use gas springs).
The unit has two springs each about 152 mm free length. The two springs that came out were 141 mm or 11mm shorter; definitely time for replacement.
Other components also had indications of approaching the end of their serviceable life and were replaced.
At HST we repair CAPTO clamping systems to OEM specifications. If you have a damaged spindle and need emergency repair call us at +603.483.0333 or email us at email@example.com.