Factors Affecting Design EBRW springs0 pages

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Maximum Energy ConstantTorque Springs

nnEB-RW Laminated ConstantTorque Springs for 90˚ Angular Deflections nn

The EB-RW laminated spring is a shortdeflection form of spring motor and generally consists of two or more laminations.The torquebeing the sum of the number of Spiroflex springs used,a maximum of 8 springs can be used in any one assembly,providing
increased torque in the leastpossible space.Our standard range of maximum energy springs are designed for 90 maximum angular movementwith an average fatigue life of5,000 cycles.However,special Spiroflex springs can be manufactured to provide higher fatigue lives and greater deflections.To
discuss your needs,please call our Technical Sales Departmentwho will be pleased to help.

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Average Fatigue Life 5,000 Cycles

TORQUETOTAL TORQUE OUTPUT FOR NUMBER OF LEAVES 25з4mm WIDE 10%PER SINGLE SPRING LEAF ѱ 10%TLRN*R3RA2345678No.NMKg cmmmmmmmmmmmNMKg cmNMKg cmNMKg cmNMKg cmNMKg cmNMKg cmNMKg cm RW111 2412 ׷ 68 251279 ׷ 2521 16692 ׷ 4925 363 ׷ 7338 044 ׷ 9750 726 ׷ 2263 47 ׷ 4676 088 ׷ 7088 769 ׷ 95101 44RW121 ׷ 7918 27׷ 3114611 125 ׷ 4793 5836 ׷ 545 3854 ׷ 817 1773 ׷ 088 9691 ׷ 3510 75109 ׷ 6212 54127 ׷ 8914 33146 ׷ 16RW132 4424 ׷ 84 3616512 ׷ 9529 46934 ׷ 8749 687 ׷ 3174 529 ׷ 7499 3612 ׷ 18124 214 ׷ 62149 0417 ׷ 05173 8819 ׷ 49198 72RW142 ׷ 8028 52׷ 3817813 8431 ׷ 75995 5957 ׷ 048 3985 ׷ 5611 19114 ׷ 0813 98142 ׷ 616 78171 ׷ 1219 58199 ׷ 6422 38228 ׷ 16RW153 1832 ׷ 44 4118414 ׷ 8133 781026 ׷ 3664 889 ׷ 5497 3212 ׷ 73129 7615 ׷ 91162 219 ׷ 09194 6422 ׷ 27227 0825 ׷ 45259 52RW164 ׷ 0241 03׷ 4620316 6438 ׷ 11148 0582 ׷ 0612 07123 ׷ 0916 09164 ׷ 1220 12205 ׷ 1524 14246 ׷ 1828 17287 ׷ 2125 45259 ׷ 52RW174 9750 ׷ 71 5122918 ׷ 4942 161279 ׷ 95101 4214 ׷ 92152 1319 ׷ 89202 8424 ׷ 87253 5529 ׷ 84304 2634 ׷ 81354 9739 ׷ 78405 68RW185 ׷ 9961 08׷ 5624820 3246 ׷ 4814011 98122 ׷ 1617 97183 ׷ 2423 96244 ׷ 3229 95305 ׷ 435 94366 ׷ 4841 93427 ׷ 5847 92488 ׷ 64RW197 7478 ׷ 94 6427923 ׷ 1152 5315915 ׷ 48157 8823 ׷ 22236 8230 ׷ 97315 7638 ׷ 71394 746 ׷ 45473 6454 ׷ 19552 5861 ׷ 93631 52 NOTE:Notmore than 8 leaves to be used together in any one set.When ordering please quote Spring Reference and Number of Leaves per set,i.e.RW 15/8*Reference only,may be varied to meettorque specification. >

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SPRING END
7.9425.45.56 DIA12.7 nn

R3RARN90ANGULARDEFLECTION

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SYMBOLS T = Material thickness
L = Spring length (ref only)RN = Free coil radiusR3 = Torque drum radiusRA = Optimum centre spacing

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