Technical Reference
290
American Standard Mold Base Features
Guided Ejection Systems
Sizes & Thicknesses
43 Nominal Sizes • T he American Standard Mold Base is available in 43 nominal sizes to match the mold space requirements for your application. • A s the creator of the American mold base standard, DME has the largest selection of mold base sizes and most are available in less than five business days. 9 Plate Thicknesses • D ME offers mold plates for all nominal sizes up to 5-7/8". • O ur own steel processing facility manufactures our mold plate directly from raw steel slabs.
Guided Ejection Systems hold the ejector assembly in alignment and support the weight of the ejector assembly throughout the molding cycle – greatly reducing wear on ejection components and preventing cocking of the ejector assembly.
CODE THICKNESS 7 0.875 13 1.375 17 1.875 23 2.375 27 2.875 33 3.375 37 3.875 47 4.875 57 5.875
”L”
”L”
GE-X (4)
GE-X (2)
Offset (1)
Offset (1)
GE dia. leader pin for guided ejection (2) places as shown
GE dia. leader pin for guided ejection (4) places as shown
GE-Y (4)
”W”
”W”
WEIGHT RANGE (LBS) MIN MAX
WEIGHT RANGE (LBS) MIN MAX
NOMINAL SIZE
WIDTH (IN)
LENGTH (IN)
NOMINAL SIZE
WIDTH (IN)
LENGTH (IN)
88
7.875 7.875 116 305 7.875 11.875 175 460 9.875 8.000 156 393 9.875 11.875 235 592 9.875 16.000 316 798
1529 14.875 29.500 989 2327 1616 15.875 16.000 573 1347 1620 15.875 20.000 716 1683 1623 15.875 23.500 841 1978 1626 15.875 26.000 930 2189 1629 15.875 29.500 1056 2483 1635 15.875 35.500 1270 2988 1724 16.500 23.750 883 2078 1729 16.500 29.500 1097 2581 1818 17.875 18.000 725 1706 1820 17.875 20.000 806 1896 1823 17.875 23.500 947 2227 1826 17.875 26.000 1048 2464 1829 17.875 29.500 1189 2796 1835 17.875 35.500 1430 3365 1924 19.500 23.750 1044 2456 1929 19.500 29.500 1297 3050 1935 19.500 35.500 1648 3758 2424 23.750 23.750 1343 3062 2429 23.750 29.500 1668 3804 2435 23.750 35.500 2008 4578
812 108
“B” HALF OF MOLD FOR 88, 812 & 108 MOLD BASE SIZE ONLY
“B” HALF OF MOLD FOR 1012 – 2435 BASES
1012 1016 1020
SYSTEM 2 9.875 20.000 395 997 1112 10.875 12.000 261 659 1114 10.875 14.000 305 769 1118 10.875 18.000 392 988 1123 10.875 23.500 511 1290 1212 11.875 12.000 285 719 1215 11.875 15.000 379 899 1220 11.875 20.000 505 1199 1223 11.875 23.500 594 1409 1315 13.375 15.000 427 1038 1318 13.375 18.000 512 1246 1321 13.375 20.750 590 1436 1323 13.375 23.500 669 1627 1326 13.375 26.000 740 1800 1329 13.375 29.500 839 2042 1518 14.875 17.875 599 1410 1524 14.875 23.750 796 1873 Steels for Structural and Holder Block Applications Leader Pin Ejector Housing Ejector Plate Ejector Retainer Plate Support Plate
Guided Ejection Positions
PIN DIAMETER (RECOM’D)
BASE SIZE
GE X
GE Y
Support Plate 1518 7.875 2.375 1524 10.812 2.375 1529 13.688 2.375 1616 6.938 2.875 1620 8.938 2.875 1623 10.688 2.875 1626 11.938 2.875 1629 13.688 2.875 1635 16.688 2.875 1724 10.812 3.125 1729 13.688 3.125 1818 7.938 3.875 1820 8.938 3.875 1823 10.688 3.875 1826 11.038 3.875 1829 13.688 3.875 1835 16.688 3.875 1924 10.812 4.625 1929 13.688 4.625 1935 16.688 4.625 88 3.000 Center 812 5.000 Center 108 3.062 Center 1012 5.000 1.000 1016 7.062 1.000 1020 9.062 1.000 1112 5.062 1.625 1114 6.062 1.625 1118 8.062 1.625 1123 10.812 1.625 212 5.000 1.750 1215 6.500 1.750 1220 9.000 1.750 1223 10.750 1.750 1315 6.500 2.375 1318 8.000 2.375 1321 9.375 2.375 1323 10.750 2.375 1326 12.000 2.375 1329 13.750 2.375 2424 10.688 6.125 2429 13.562 6.125 2435 16.562 6.125
Leader Pin
0.750
Ejector Housing
Ejector Plate
Ejector Retainer Plate
Support Plate
SYSTEM 1 System 1 When pins are installed in the support plate, the ejector housing can be removed from the mold without removing ejector plates. This permits easy access to service the ejector system.
DME #1 Steel is a medium carbon quality steel with greater tensile strength than typical plain carbon warehouse steels. It machines easily, but is not “sticky”, permitting a faster and smoother cut. International comparisons: DIN 1.1178 (CK 30) and 1.1730 (C 45 W); JIS S 30 CM, S50C, S55C; ISO 683-1 C30E4. DME #2 Steel is a medium alloy steel specified for durability in structural applications. It is supplied pre-heat treated to 28-34 HRC (271-321 Bhn). A high strength steel, it is ideal for cavity and core retainer plates, clamping plates and support plates in molds. International comparisons: DIN 1.2312 (40CrMnMoS 8 6), 1.7218 (25CrMo4) and 1.2331 (41CrMoS4); JIS SCM 430; ISO 683-2 Type 1. DME #7 Steel is a modified AISI 400 series stainless steel for holder block applications. It is supplied pre-heat treated to 32-36 HRC (302-340 Bhn). This stainless steel offers corrosion- resistance and exceptional machinability but cannot be further hardened (see DME #6). For humid environments, corrosive plastics, “clean room” or “100% stainless” applications, it is an ideal choice for all structural mold plates. International comparisons: none. Steels for Cavity & Core Applications DME #3 Steel is a P-20 AISI 4130 type cavity steel. Exceptionally clean, it is pre-heat treated to 28-34 HRC (271-321 Bhn). It provides good machinability, the ability to heat treat to higher hardness, and exceptional polishability. International comparisons: DIN 1.2311 G40CrMnMo7; JIS none; ISO none. DME #5 Steel is an AISI/SAE H-13 type thermal shock resistant, hotwork die steel. Supplied fully annealed (approximately 200 Bhn; 13-20 HRC) for easy machinability, it can be subsequently heat treated to the desired hardness with a minimum of deformation. Mainly used for die cast dies, it is also suitable for plastic molds with exceptional hardness or polishability requirements. DME #5 Steel meets or exceeds the acceptance criteria established by the NADCA as detailed in Technical Digest Number 01-80-01D. International comparisons: DIN 1.2344 (X40CrMoV5-1); JIS SKD 61; ISO 4955 H13. DME #6 Steel is a modified AISI 420 type stainless steel. It is supplied fully annealed to 179-241 Bhn (8-23 HRC), making it readily machinable. Unlike DME #7 steel, DME #6 steel is a cavity-grade material that can be subsequently heat treated to the desired hardness and has excellent polishability. International comparisons: DIN 1.4028 (X30Cr13); JIS SUS 420 J 2; ISO none.
0.875
Leader Pin
Leader Pin
Ejector Housing
Ejector Plate
Ejector Retainer Plate
Ejector Housing
Ejector Plate
Ejector Retainer Plate
Support Plate
System 2 Pins installed in the ejector housing permit fast installation. When the ejector housing is removed from the mold base, the complete ejector assembly is removed. SYSTEM 2
SYSTEM 1
1.000
1.250
U.S. 800-626-6653 ■ Canada 800-387-6600 ■ dme.net ■ store.dme.net
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