Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
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COLLAPSIBLE CORECC 175 P.C. <strong>Core</strong> DimensionsCENTER SCREWS ONMIDDLE OF LARGESEGMENT1.150 MAXSET-UP GRINDINGREFER TO GRINDINGINFORMATION1.625 ±.004(NOTE 4)Ø1.824Ø1.113USE SCREWS TOALIGN CORE ON PININDICATE HERE FORGRINDING .003 MAX T.I.R.NOTES:1. Center pin to project .015 minimum/.075 maximum above frontface of <strong>Collapsible</strong> <strong>Core</strong> with .008 R minimum at corners. Seesuggested partial mold assembly view.2. Both ends of center pin to be cut off after grinding contour on<strong>Collapsible</strong> <strong>Core</strong> before assembly in mold.3. Minimum suggested I.D. of thread or undercut is .760-S togive minimum steel support between depth of undercut andcenter pin.5. Consult Grinding Instructions.6. A 1/32 radius is essential on the inside corners of the stripperinsert, especially where shut-off contacts <strong>Collapsible</strong> <strong>Core</strong>.7. Thread must never be run out of face of core, leaving aknife-edge of material. For complete instructions, refer toDesign Procedures.8. Do not use center pin as a pilot into “A” half of mold.4. The 1.625 ±.005 dimension must be held in mold assemblyand core grinding.Questions? Call <strong>Roehr</strong> <strong>Tool</strong> <strong>Corporation</strong> at 978-562-4488 or Toll Free at 877-563-1912.27
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