Collapsible Core & Collapsible Minicore - Roehr Tool Corporation

COLLAPSIBLE CORECC 252 P.C. Core Dimensions (cont.)1.25MAXSET-UP FOR GRINDINGREFER TO GRINDING INFORMATION±.0051.000(NOTE 4)HEADSPACEØ2.63 Ø1.88NOTES:CENTER SCREWS ONMIDDLE OF LARGESEGMENT1. Center pin to project .015 minimum/.075 maximum above frontface of Collapsible Core with .008 R minimum at corners. Seesuggested partial mold assembly view.2. Both ends of center pin to be cut off after grinding contour onCollapsible Core before assembly in mold.3. Minimum suggested I.D. of thread or undercut is .910-S to giveminimum steel support between depth of undercut and center pin.4. The 1.000 ±.005 dimension must be held in mold assemblyand core grindingUSE SCREWS TOALIGN CORE ON PIN5. Consult Grinding Instructions.INDICATE HERE FORGRINDING .003 MAX T.I.R.6. A 1/32 radius is essential on the inside corners of the stripperinsert, especially where shut-off contacts Collapsible Core.7. Thread must never be run out of face of core, leaving a knife-edgeof material. For complete instructions, refer to Design Procedures.8. Do not use center pin as a pilot into “A” half of mold.NOTE: Due to the reduction in mold plate thicknesses ascompared to the CC-202-PC Collapsible Core, nogreater than a four-cavity CC-252-PC Core mold isrecommended.Questions? Call Roehr Tool Corporation at 978-562-4488 or Toll Free at 877-563-1912.47