Standard Diaphragm Sizes

Example of edge welded bellows with microscope view of inside and outside diameter weld beads.Edge welded metal bellows are manufactured by stamping metal diaphragms, welding the inside diameters, and finally the outside diameters.  BellowsTech offers standard bellows diaphragm sizes to offer customers a quick, cost-effective way to configure an edge welded metal bellows assembly.  For calculations of stroke length and spring length per segment, contact the factory.  Our design engineers will assist with all of the specifications for the size(s) needed. BellowsTech can develop custom sizes, as well.

As always, if you have technical questions, contact our support staff by phone or email.

Download a brief pdf version of the Die List here featuring nearly 100 die sizes or refer to the table below.

Size Number
Outside Diameter
 
Inside Diameter
 
Mean Effective Pressure Area
 
Radial Span
 
inches(mm)inches(mm)inches²(mm²)inches(mm)
0036A0.358(9.1)0.200(5.1)0.0611(39.4)0.0790(2.0)
0040A0.396(10.1)0.200(5.1)0.0697(45.0)0.0980(2.5)
0048A0.477(12.1)0.198(5.0)0.0895(57.7)0.1395(3.5)
0050A0.496(12.6)0.200(5.1)0.0951(61.4)0.1480(3.8)
0060A0.595(15.1)0.260(6.6)0.1435(92.6)0.1675(4.3)
0061A0.608(15.4)0.228(5.8)0.1372(88.5)0.1900(4.8)
0067A0.670(17.0)0.394(10.0)0.2223(143.4)0.1380(3.5)
0075A0.750(19.1)0.260(6.6)0.2003(129.2)0.2450(6.2)
0080A0.800(20.3)0.400(10.2)0.2827(182.4)0.2000(5.1)
0082A0.821(20.9)0.548(13.9)0.3680(237.4)0.1365(3.5)
0083A0.827(21.0)0.575(14.6)0.3859(249.0)0.1260(3.2)
0084A0.838(21.3)0.500(12.7)0.3515(226.8)0.1690(4.3)
0089A0.892(22.7)0.592(15.0)0.4324(279.0)0.1500(3.8)
0102A1.022(26.0)0.683(17.3)0.5708(368.3)0.1695(4.3)
0103A1.030(26.2)0.540(13.7)0.4840(312.2)0.2450(6.2)
0103B1.030(26.2)0.540(13.7)0.4840(312.2)0.2450(6.2)
0103C1.030(26.2)0.540(13.7)0.4840(312.2)0.2450(6.2)
0103D1.030(26.2)0.550(14.0)0.4902(316.2)0.2400(6.1)
0108A1.080(27.4)0.860(21.8)0.7390(476.8)0.1100(2.8)
0117A1.170(29.7)0.750(19.1)0.7238(467.0)0.2100(5.3)
0118C1.181(30.0)0.886(22.5)0.8389(541.2)0.1475(3.7)
0124A1.240(31.5)0.660(16.8)0.7088(457.3)0.2900(7.4)
0125A1.252(31.8)0.858(21.8)0.8742(564.0)0.1970(5.0)
0133A1.330(33.8)1.015(25.8)1.0797(696.6)0.1575(4.0)
0136A1.355(34.4)0.540(13.7)0.7051(454.9)0.4075(10.4)
0136B1.362(34.6)1.012(25.7)1.1066(713.9)0.1750(4.4)
0136C1.355(34.4)0.540(13.7)0.7051(454.9)0.4075(10.4)
0144A1.437(36.5)0.937(23.8)1.1066(713.9)0.2500(6.4)
0150A1.500(38.1)1.000(25.4)1.2272(791.7)0.2500(6.4)
0151A1.511(38.4)1.186(30.1)1.4282(921.4)0.1625(4.1)
0156A1.560(39.6)0.865(22.0)1.1547(744.9)0.3475(8.8)
0163A1.625(41.3)0.750(19.1)1.1075(714.5)0.4375(11.1)
0163B1.625(41.3)0.937(23.8)1.2888(831.5)0.3440(8.7)
0165A1.650(41.9)1.240(31.5)1.6399(1058.0)0.2050(5.2)
0174A1.738(44.1)1.363(34.6)1.8881(1218.2)0.1875(4.8)
0175A1.750(44.5)0.750(19.1)1.2272(791.7)0.5000(12.7)
0175B1.750(44.5)1.000(25.4)1.4849(958.0)0.3750(9.5)
0176A1.759(44.7)1.305(33.1)1.8433(1189.3)0.2270(5.8)
0188A1.875(47.6)0.975(24.8)1.5948(1028.9)0.4500(11.4)
0189A1.890(48.0)1.390(35.3)2.1124(1362.8)0.2500(6.4)
0190B1.900(48.3)1.500(38.1)2.2698(1464.4)0.2000(5.1)
0193A1.925(48.9)1.200(30.5)1.9175(1237.1)0.3625(9.2)
0195A1.950(49.5)1.557(39.5)2.4149(1558.0)0.1965(5.0)
0200A2.000(50.8)1.250(31.8)2.0739(1338.0)0.3750(9.5)
0213A2.126(54.0)1.654(42.0)2.8055(1810.0)0.2360(6.0)
0219A2.190(55.6)1.690(42.9)2.9559(1907.0)0.2500(6.4)
0224A2.244(57.0)1.625(41.3)2.9392(1896.2)0.3095(7.9)
0225A2.250(57.2)1.500(38.1)2.7612(1781.4)0.3750(9.5)
0244B2.437(61.9)1.937(49.2)3.7565(2423.6)0.2500(6.4)
0244D2.437(61.9)1.937(49.2)3.7565(2423.6)0.2500(6.4)
0245A2.450(62.2)1.650(41.9)3.3006(2129.4)0.4000(10.2)
0260A2.600(66.0)1.780(45.2)3.7668(2430.2)0.4100(10.4)
0260B2.595(65.9)2.185(55.5)4.4863(2894.4)0.2050(5.2)
0263A2.625(66.7)2.125(54.0)4.4301(2858.1)0.2500(6.4)
0265A2.650(67.3)2.000(50.8)4.2456(2739.1)0.3250(8.3)
0270A2.700(68.6)1.950(49.5)4.2456(2739.1)0.3750(9.5)
0275A2.750(69.9)2.125(54.0)4.6664(3010.6)0.3125(7.9)
0275B2.750(69.9)2.125(54.0)4.6664(3010.6)0.3125(7.9)
0275C2.750(69.9)1.650(41.9)3.8013(2452.5)0.5500(14.0)
0276A2.760(70.1)1.965(49.9)4.3836(2828.1)0.3975(10.1)
0299A2.990(75.9)2.247(57.1)5.3851(3474.3)0.3715(9.4)
0300A3.000(76.2)2.000(50.8)4.9087(3166.9)0.5000(12.7)
0300B3.000(76.2)2.000(50.8)4.9087(3166.9)0.5000(12.7)
0317B3.165(80.4)2.585(65.7)6.4918(4188.3)0.2900(7.4)
0328A3.283(83.4)2.811(71.4)7.2918(4704.4)0.2360(6.0)
0331A3.305(83.9)2.810(71.4)7.3421(4736.9)0.2475(6.3)
0350A3.500(88.9)2.750(69.9)7.6699(4948.3)0.3750(9.5)
0368A3.675(93.3)2.530(64.3)7.5599(4877.3)0.5725(14.5)
0395A3.950(100.3)3.200(81.3)10.0379(6476.0)0.3750(9.5)
0399A3.990(101.3)2.690(68.3)8.7616(5652.6)0.6500(16.5)
0403B4.034(102.5)3.085(78.4)9.9510(6420.0)0.4745(12.1)
0417A4.170(105.9)3.700(94.0)12.1613(7846.0)0.2350(6.0)
0420A4.200(106.7)3.400(86.4)11.3411(7316.9)0.4000(10.2)
0425A4.250(108.0)3.200(81.3)10.8979(7030.9)0.5250(13.3)
0472A4.720(119.9)3.720(94.5)13.9867(9023.6)0.5000(12.7)
0475A4.750(120.7)3.030(77.0)11.8847(7667.5)0.8600(21.8)
0490A4.900(124.5)3.530(89.7)13.9536(9002.3)0.6850(17.4)
0490B4.903(124.5)4.323(109.8)16.7131(10782.6)0.2900(7.4)
0497A4.970(126.2)4.000(101.6)15.7985(10192.5)0.4850(12.3)
0508A5.077(129.0)4.130(104.9)16.6443(10738.3)0.4735(12.0)
0545A5.450(138.4)4.950(125.7)21.2372(13701.4)0.2500(6.4)
0550A5.500(139.7)4.500(114.3)19.6350(12667.7)0.5000(12.7)
0550B5.500(139.7)4.500(114.3)19.6350(12667.7)0.5000(12.7)
0572A5.722(145.3)4.472(113.6)20.4042(13164.0)0.6250(15.9)
0572B5.722(145.3)4.472(113.6)20.4042(13164.0)0.6250(15.9)
0588A5.880(149.4)5.120(130.0)23.7583(15327.9)0.3800(9.7)
0675A6.750(171.5)5.542(140.8)29.6671(19140.0)0.6040(15.3)
0728A7.283(185.0)5.906(150.0)34.1549(22035.4)0.6885(17.5)
0775A7.750(196.9)6.850(174.0)41.8539(27002.4)0.4500(11.4)
0785A7.850(199.4)6.250(158.8)39.0363(25184.6)0.8000(20.3)
0787A7.874(200.0)6.693(170.0)41.6649(26880.5)0.5905(15.0)
0808A8.083(205.3)7.150(181.6)45.5618(29394.6)0.4665(11.8)
0825B8.248(209.5)7.500(190.5)48.6948(31415.8)0.3740(9.5)
0925A9.250(235.0)8.000(203.2)58.4263(37694.3)0.6250(15.9)
0950A9.500(241.3)8.500(215.9)63.6173(41043.3)0.5000(12.7)
1099A10.990(279.1)10.120(257.0)87.4997(56451.3)0.4350(11.0)
1100A11.000(279.4)9.500(241.3)82.5159(53236.0)0.7500(19.1)
1110A11.102(282.0)9.102(231.2)80.1502(51709.7)1.0000(25.4)
1200A12.000(304.8)10.000(254.0)95.0332(61311.6)1.0000(25.4)
2221A22.205(564.0)19.921(506.0)348.4419(224800.8)1.1420(29.0)

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