Ondrives: Springs - Constant Force Extension Springs - SA - Twin

SA : Twin, 20-275.9N Load

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10+ 5%

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50+ 15%

100+ 20%

Part Number	A	B	C	Load ±10%		Extension	Average Fatigue Life Cycles	Cost	Quantity	Add to Basket
Part Number	A	B	C	Newtons	Kg	Extension	Average Fatigue Life Cycles	Cost	Quantity	Add to Basket
SA257	35.81	20.57	25.4	20.0	2.0	915	40000	£57.12
SA258	35.81	20.57	25.4	27.6	2.8	1118	40000	£63.75
SA259	35.81	20.57	25.4	32.1	3.3	1321	40000	£63.75
SA260	35.81	20.57	25.4	37.0	3.8	1524	40000	£69.99
SA261	48.51	26.92	38.1	41.4	4.2	1118	40000	£66.81
SA262	35.81	20.57	25.4	48.1	4.9	1321	15000	£63.75
SA263	48.51	26.92	38.1	56.1	5.7	1524	40000	£69.99
SA264	35.81	20.57	25.4	60.5	6.2	1524	15000	£69.99
SA265	61.21	33.27	50.8	64.5	6.6	1321	40000	£70.67
SA266	48.51	26.92	38.1	90.8	9.3	1524	15000	£69.99
SA267	48.51	26.92	38.1	140.6	14.3	2235	15000	£84.49
SA268	61.21	33.27	50.8	160.1	16.3	1930	15000	£77.82
SA269	61.21	33.27	50.8	186.9	19.1	2235	15000	£111.27
SA270	48.51	26.92	38.1	206.4	21.0	2235	5000	£84.49
SA271	61.21	33.27	50.8	275.9	28.1	2235	5000	£111.27

Material
Spring: Stainless Steel 301 S21 Grade
Other Parts: Pressed Mild Steel, Zinc plated and clear passivated.
Operating Temperature Range: -200°C to +200°C

Other Info.
Constant force extension springs provide a huge range of application opportunities.
Springs can be extended in excess of 50 times the relaxed length of the spring,
and can be mounted on a bobbin or bush or free running in a cavity or recess.
Springs can be joined or laminated to provide increased force with minimal increases in space requirements.

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