Collapsible Core & Collapsible Minicore - Roehr Tool Corporation

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COLLAPSIBLE CORECC 502 P.C. Core Dimensions2.125MAXSET-UP FOR GRINDINGREFER TO GRINDING INFORMATION 1.750(NOTE 4)±.0053.75 3.00CENTER SCREWS ONMIDDLE OF LARGESEGMENTUSE SCREWS TOALIGN CORE ON PININDICATE HERE FORGRINDING .003 MAX T.I.R.NOTES:1. Center pin to project .030 minimum/.075 maximum above frontface of Collapsible Core with .015 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 2.060-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 Collapsible Core.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 1.750 ±.005 dimension must be held in moldassembly and core grinding.Questions? Call Roehr Tool Corporation at 978-562-4488 or Toll Free at 877-563-1912.67
COLLAPSIBLE CORECC 502 P.C. Mold Base Machining DimensionsSUBTRACT INTERNAL DEPTH OF PARTPLUS MATERIAL SHRINK FROM THISDIMENSION TO DETERMINE ACTUALSTRIPPER PLATE THICKNESSTHIS PLATE THICKNESSMAY BE VARIED ASDESIREDCAVITYPLATESTRIPPERPLATE2.937.8751.875C-5.125.8751.375±.0053.312EJECTOR STROKE±.003.6251.000.187SUPPORTRING3/4 N.P.T. TAPSHUT-OFF DIMENSIONAS NEEDED(CHECK LIST 7 & 13)±.007Ø2.895Ø3.88+.003-.000Ø3.754Ø3.88+.003-.000Ø3.754Ø4.13+.005-.000Ø3.223+.001-.000Ø2.970Ø2.06+.001-.000Ø2.001ASTRIPPER INSERTMUST BE RETAINED1.200MIN.+.003-.002.207±.0051.750.312 NOM.C’BORE AS NEEDEDTO HOLD 1.750±.005.50.50±.0039.625CORE O.A.L.(CHECK LIST 11).375+.001-.0001.187 ±.001+.005-.0002.380GRIND EJECTOR PLATE,SUPPORT RING, & RESTBUTTONS TO THIS DIMENSION 1.187(CHECK LIST 1)±.001PIN COOLINGDETAIL“O” RINGGROOVESECTION A-ABRASS WATERLINEBAFFLEQuestions? Call Roehr Tool Corporation at 978-562-4488 or Toll Free at 877-563-1912.68
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Collapsible Core & Collapsible Minicore - Roehr Tool Corporation

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