Patented jaw locating system maintains .0002" (0.005mm) TIR* runout after jaw change without remachining top jaws.

MicroCentric's QC precision locating jaw system reduces setup time and increases a machine's flexibility for JIT scheduling by eliminating the time consuming process of remachining top jaws after jaw changes. QC top jaws can also be machined off-line on a QC Jaw Turning Fixture or on another QC chuck.
 

QC System Accuracy

PPC110, PPC165 & PPC210 Models
• .0002" (0.005mm) TIR when jaws are machined and replaced onto the same PPC/QC chuck
• .0008" (0.02mm) TIR when jaws are machined on another PPC chuck or QC turning fixture

PPC250 & PPC300 Models
• .0004" (0.01mm) TIR when jaws are machined and replaced onto the same PPC/QC chuck
• .001" (0.025mm) TIR when jaws are machined on another PPC chuck or QC turning fixture

QC System Features
• Blank QC top jaws are made from A-2 tool steel
• QC Jaw Turning fixtures are available to machine top jaws off-line
• Hardened and finish ground QC top jaws for specific workpiece applications quoted on request

QC System Design
QC top jaws are located on two tapered buttons that are mounted in jig ground locating holes on the chuck's base jaw. QC top jaws feature ground tapered locating holes that locate with the tapered buttons. The top jaw seats on the OD of the tapered button as well as on the face of the base jaw, assuring high accuracy and rigidity.

*QC system accuracy for PPC250 and PPC300 chucks is .0004" (0.01mm)

 




Blank QC Top Jaws are made from A-2 tool steel and feature finish machined tapered seats for accurate location. Blank QC jaws can be heat treated to a hardness up to Rc 62.

Other Blank QC Top Jaws including pie-shaped jaws are quoted upon request.
Chuck Jaw Model Material A B C Weight*
PPC110 QP4-150S A-2 .75" 2.12" 1.50" .59 lb
    19mm 54mm 38mm .27 kg
QP4-200S A-2 .75" 2.12" 2.00" .78 lb
      19mm 54mm 50mm .35 kg
PPC165 QP6-200S A-2 1.25" 3.22" 2.00" 1.8 lb
    32mm 82mm 50mm .82 kg
QP6-300S A-2 1.25" 3.22" 3.00" 2.7 lb
      32mm 82mm 76mm 1.2kg
PPC210 QP8-200S A-2 1.5" 4.00" 2.00" 2.9 lb
    38mm 102mm 50mm 1.3 kg
QP8-300S A-2 1.5" 4.00" 3.00" 4.4 lb
      38mm 102mm 76mm 2.0 kg
PPC250 QP10-200S A-2 1.5" 4.88" 2.00" 3.7 lb
    38mm 124mm 50mm 1.7 kg
QP10-300S A-2 1.50" 4.88" 3.00" 5.5 lb
      38mm 124mm 76mm 2.5 kg
PPC300 QP12-200S A-2 1.50" 5.88" 2.00" 6.0 lb
    38mm 149mm 50mm 2.7 kg
QP12-300S A-2 1.50" 5.88" 3.00" 9.0 lb
38mm 149mm 76mm 4.1 kg
*Weights are per piece



QC jaw turning fixtures simulate the locating pattern of a QC chuck. They are used to rough and/or finish machine Blank QC Top Jaws off-line to maximize a machine's production capacity. The clamping position of the jaw turning fixture is set in the middle of the chuck's stroke. Other positions are available upon request.

QC Jaw Turning Fixtures
Chuck Turning Fixture Model
PPC110 QC/JTF-P110
PPC165 QC/JTF-P165
PPC210 QC/JTF-P210
PPC250 QC/JTF-P250
PPC300 QC/JTF-P300