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MicroCentric HSC-chucks could get equipped and delivered with different options. On need, the options could also get combined.
The following chart shows which options are available on which chucks. Below, a exact describtion of the options is shown.
| Chuck/ Option | QC | SP | AL | SG | HS |
| HSC-L chuck 75 mm | Yes | Yes | Yes | Yes | |
| HSC-L chuck 100-150 mm | Yes | Yes | Yes | Yes | Yes |
The QC system accurately locates top jaws previously machined on the chuck to maintain accuracy within 5 µm TIR. This high accuracy is achieved without re-machining the top jaws after changeover, thereby eliminating the most time consuming process associated with jaw change on precision chucks. This feature significantly reduces machine set up time, and will improve a machine's flexibility in a JIT environment. QC top jaws can also be machined off-line on a jaw turning fixture, or another QC chuck. In this case chucking accuracy is maintained within 0.01 mm TIR when top jaws are transferred to another chuck.
A further advantage of the QC-System is it's rigidity. The QC-System is predestinated to withstand high clamping forces. On this option the base jaws (1) are ploting with locating pins (2) the top jaws (4) into conical location bores (3) with exreme high accuracy.
For applications which require extremely close chucking accuracy, MicroCentric will selectively fit and certify a chuck to a repeating accuracy within 0.5 µm TIR. Parts for these chucks will be selected out of the series and an inspection certificate proves the outstanding attributes of SP chucks.
Note that temperature variations, changes in air pressure, spindle runout, and the condition and design of top jaws will affect chuck accuracy.
With the AL option, lubrication is supplied to the chuck through the air tube assembly. This provides a practical means of lubricating the chuck, even during machine operation. The AL option is especially suited for unmanned machine cells or other high volume production applications. An AL chuck is equipped with a special centre housing which directs lubricant, supplied through the centre of the air tube, to the moving components within the chuck. Lubrication can be supplied by either a manual or electric lubrication pump. Also the connection to a central lubrication unit of the machine in thinkable.
If you still work with a high precision chuck of our competitors, you should have several top jaws for that chuck. We have introduce the option SG, that you can work with your present top jaws equipment. Please let us know your requirements for the top jaw mounting. Whether dowel pins, grooves or tenon/groove - You always will receive the desired configuration.
The Option HS at HSC-L-chucks is in usage, when workpieces are manufactured at highest spindle speeds.
MicroCentric's patented NR50 air tube is used with HSC-L high speed chucks. This air tube couples to the rotary air journal in the centre of the HSC-L chucks. It features three passages, making either coolant through the spindle or automatic lubrication possible.
Through this air tube version vibrations from the air support will be minimized. The result is the outstanding workpiece surface finish and also close tolerances in a lot.
