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A disc spring is a conical washer that flattens under load and pushes back as it does, and the 150 on this shelf are picked on three dimensions to the DIN 2093 standard: outer diameter, inner diameter and material thickness, running from small 10 millimetre discs at 0.4 millimetres thick up to 100 millimetre forms in gauges reaching 6.55.
The stack is where the engineering happens. A single disc on its own gives very high force over tiny travel; stacked in series, cone to cone, the travels add together; stacked in parallel, nested facing the same way, the forces add instead; and series-parallel stacks tune both at once, so one catalogue of graded washers becomes almost any spring the available space allows. That is why disc springs live where coil springs cannot fit, under bolt heads, inside clutches, clamps, presses and valve assemblies, anywhere serious force must fit inside just millimetres of available height, delivered by a washer instead of a coil.
The same outer and inner diameter pairs come in stepped thicknesses across the shelf, the 100 by 51 millimetre body in five gauges among them, because thickness sets the force in a disc: thicker discs push harder over the same travel, so the seat picks the two diameters and the duty then picks the gauge between them.
The three DIN dimensions typed into search find the disc directly on the shelf, a worn stack measured, counted and noted for arrangement rebuilds itself like for like, and a photo of the stack with its measurements over WhatsApp on 07754288583 comes back with the disc named, the count confirmed and the series-parallel arithmetic checked for the duty.
| F 100% | 15640 N |
|---|---|
| F 25% | 4255 N |
| F 50% | 8214 N |
| F 75% | 11976 N |
| FL | 4,1 mm |
| F 100% | 5636 N |
|---|---|
| F 25% | 2528 N |
| F 50% | 4097 N |
| F 75% | 5026 N |
| FL | 4,2 mm |
| F 100% | 15128 N |
|---|---|
| F 25% | 4179 N |
| F 50% | 8018 N |
| F 75% | 11630 N |
| FL | 4,2 mm |
| F 100% | 15217 N |
|---|---|
| F 25% | 5125 N |
| F 50% | 9117 N |
| F 75% | 12356 N |
| FL | 4,75 mm |
| F 100% | 8904 N |
|---|---|
| F 25% | 2942 N |
| F 50% | 5270 N |
| F 75% | 7189 N |
| FL | 4,25 mm |
| F 100% | 19022 N |
|---|---|
| F 25% | 6434 N |
| F 50% | 11429 N |
| F 75% | 15465 N |
| FL | 5,2 mm |
| F 100% | 15002 N |
|---|---|
| F 25% | 4495 N |
| F 50% | 8352 N |
| F 75% | 11784 N |
| FL | 4,65 mm |
| F 100% | 23528 N |
|---|---|
| F 25% | 6591 N |
| F 50% | 12574 N |
| F 75% | 18153 N |
| FL | 5 mm |
| F 100% | 160,2 N |
|---|---|
| F 25% | 83,5 N |
| F 50% | 129,8 N |
| F 75% | 151,2 N |
| FL | 0,8 mm |
| F 100% | 219,6 N |
|---|---|
| F 25% | 75,1 N |
| F 50% | 132,9 N |
| F 75% | 179,1 N |
| FL | 0,7 mm |
| F 100% | 377,3 N |
|---|---|
| F 25% | 109,8 N |
| F 50% | 206,3 N |
| F 75% | 294 N |
| FL | 0,75 mm |
| F 100% | 19545 N |
|---|---|
| F 25% | 5399 N |
| F 50% | 10359 N |
| F 75% | 15025 N |
| FL | 4,9 mm |
| F 100% | 256,5 N |
|---|---|
| F 25% | 87,8 N |
| F 50% | 155,3 N |
| F 75% | 209,3 N |
| FL | 0,7 mm |
| F 100% | 125,5 N |
|---|---|
| F 25% | 45,6 N |
| F 50% | 79,1 N |
| F 75% | 104,3 N |
| FL | 0,55 mm |
| F 100% | 694,1 N |
|---|---|
| F 25% | 224,1 N |
| F 50% | 404,9 N |
| F 75% | 556,8 N |
| FL | 1 mm |
| F 100% | 338,4 N |
|---|---|
| F 25% | 120,1 N |
| F 50% | 209,8 N |
| F 75% | 279,2 N |
| FL | 0,9 mm |
| F 100% | 333,7 N |
|---|---|
| F 25% | 138,1 N |
| F 50% | 229,4 N |
| F 75% | 289,4 N |
| FL | 1 mm |
| F 100% | 844,4 N |
|---|---|
| F 25% | 256,3 N |
| F 50% | 473,9 N |
| F 75% | 665,6 N |
| FL | 1,1 mm |
| F 100% | 502,5 N |
|---|---|
| F 25% | 172 N |
| F 50% | 304,3 N |
| F 75% | 410 N |
| FL | 1,05 mm |
| F 100% | 461,6 N |
|---|---|
| F 25% | 191,1 N |
| F 50% | 317,3 N |
| F 75% | 400,3 N |
| FL | 1,2 mm |
| F 100% | 222,9 N |
|---|---|
| F 25% | 120,7 N |
| F 50% | 185,8 N |
| F 75% | 213,7 N |
| FL | 1,05 mm |
| F 100% | 1277 N |
|---|---|
| F 25% | 479,5 N |
| F 50% | 821,6 N |
| F 75% | 1072 N |
| FL | 1,5 mm |
| F 100% | 668 N |
|---|---|
| F 25% | 261,5 N |
| F 50% | 442 N |
| F 75% | 568,5 N |
| FL | 1,35 mm |
| F 100% | 443,9 N |
|---|---|
| F 25% | 240,4 N |
| F 50% | 369,9 N |
| F 75% | 425,4 N |
| FL | 1,4 mm |
| F 100% | 1815 N |
|---|---|
| F 25% | 543,6 N |
| F 50% | 1010 N |
| F 75% | 1425 N |
| FL | 1,55 mm |
| F 100% | 9360 N |
|---|---|
| F 25% | 3755 N |
| F 50% | 6297 N |
| F 75% | 8031 N |
| FL | 4,9 mm |
| F 100% | 858,8 N |
|---|---|
| F 25% | 434,8 N |
| F 50% | 681 N |
| F 75% | 801,4 N |
| FL | 1,8 mm |
| F 100% | 722,7 N |
|---|---|
| F 25% | 347,9 N |
| F 50% | 552,5 N |
| F 75% | 661,5 N |
| FL | 1,75 mm |
| F 100% | 8152 N |
|---|---|
| F 25% | 2894 N |
| F 50% | 5054 N |
| F 75% | 6725 N |
| FL | 4,5 mm |
| F 100% | 3000 N |
|---|---|
| F 25% | 863,4 N |
| F 50% | 1630 N |
| F 75% | 2331 N |
| FL | 1,85 mm |
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