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Extension Springs

An extension spring or tension spring is a length of tightly coiled metal, usually steel with hooks or loops at either end. Extension springs absorb and store energy.

What does it do?

An extension spring is a component that creates a resistance to a pulling force. Extension springs work by trying to pull two objects back together. The attached spring is pulled in opposite directions and the force and the stored energy to pull the two objects back together.

Types

Extension or tension springs selected by a few key attributes, they are:

Material – Steel or stainless steel
Free length - The overall length of the spring in its unloaded position
Max extended length – The length of the spring when it is fully extended
Outside diameter – The outside diameter of the springs coils
Wire diameter – The diameter of the metal used to make the spring
Spring rate – The force, quoted in N/mm
Max load – The load when the spring is at full extension

Uses

Garage doors
Automotive
Trampolines
Lever mechanisms

68 Products showing for Extension Springs

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In Stock RS PRO Stainless Steel Extension Spring, 32.9 mm x 3.6 mm OD RS Stock No. 821-403 Subtotal (1 pack of 10 units) PHP370.50(exc. VAT) PHP37.05/unit Quantity	Stainless Steel	Extension Spring	32.9mm	87.6mm	3.6mm	0.4mm	5.44N	0.093N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 35 mm x 7 mm OD RS Stock No. 751-770 Subtotal (1 pack of 10 units) PHP740.97(exc. VAT) PHP74.097/unit Quantity	Steel	Extension Spring	35mm	101.5mm	7mm	0.63mm	12.2N	0.16N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Stainless Steel Extension Spring, 38.5 mm x 7.5 mm OD RS Stock No. 821-532 Subtotal (1 pack of 10 units) PHP911.91(exc. VAT) PHP91.191/unit Quantity	Stainless Steel	Extension Spring	38.5mm	106mm	7.5mm	0.7mm	12.8N	0.17N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Stainless Steel Extension Spring, 30.4 mm x 6 mm OD RS Stock No. 821-475 Subtotal (1 pack of 10 units) PHP331.08(exc. VAT) PHP33.108/unit Quantity	Stainless Steel	Extension Spring	30.4mm	86.6mm	6mm	0.55mm	7.9N	0.12N/mm	BS 1408 CR3, DIN 17223, RoHS
In Stock RS PRO Stainless Steel Extension Spring, 24.5 mm x 3.5 mm OD RS Stock No. 821-431 Subtotal (1 pack of 10 units) PHP707.71(exc. VAT) PHP70.771/unit Quantity	Stainless Steel	Extension Spring	24.5mm	41.8mm	3.5mm	0.5mm	10N	0.49N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Stainless Steel Extension Spring, 22.1 mm x 3.2 mm OD RS Stock No. 821-419 Subtotal (1 pack of 10 units) PHP759.49(exc. VAT) PHP75.949/unit Quantity	Stainless Steel	Extension Spring	22.1mm	42.3mm	3.2mm	0.45mm	8.91N	0.407N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 25 mm x 5 mm OD RS Stock No. 751-691 Subtotal (1 pack of 10 units) PHP801.26(exc. VAT) PHP80.126/unit Quantity	Steel	Extension Spring	25mm	80.8mm	5mm	0.45mm	6.48N	0.11N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 77.8 mm x 13 mm OD RS Stock No. 121-359 Subtotal (1 pack of 5 units) PHP800.51(exc. VAT) PHP160.102/unit Quantity	Steel	Extension Spring	77.8mm	97.4mm	13mm	2.5mm	317N	13.7N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 87.2 mm x 12 mm OD RS Stock No. 121-321 Subtotal (1 pack of 5 units) PHP895.71(exc. VAT) PHP179.142/unit Quantity	Steel	Extension Spring	87.2mm	134.8mm	12mm	1.8mm	21.05N	2.52N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 34.4 mm x 12 mm OD RS Stock No. 751-893 Subtotal (1 pack of 10 units) PHP979.07(exc. VAT) PHP97.907/unit Quantity	Steel	Extension Spring	34.4mm	76.7mm	12mm	1.1mm	35.8N	0.72N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 41.4 mm x 6 mm OD RS Stock No. 751-758 Subtotal (1 pack of 10 units) PHP860.90(exc. VAT) PHP86.09/unit Quantity	Steel	Extension Spring	41.4mm	125.7mm	6mm	0.55mm	9.5N	0.1N/mm	RoHS, BS 1408 CR3, DIN 17223
In Stock RS PRO Steel Extension Spring, 48 mm x 11 mm OD RS Stock No. 121-337 Subtotal (1 pack of 10 units) PHP1,055.98(exc. VAT) PHP105.598/unit Quantity	Steel	Extension Spring	48mm	58.1mm	11mm	2.2mm	259N	21.9N/mm	RoHS, BS 1408 CR3, DIN 17223
In Stock RS PRO Steel Extension Spring, 44.6 mm x 9 mm OD RS Stock No. 751-837 Subtotal (1 pack of 10 units) PHP964.73(exc. VAT) PHP96.473/unit Quantity	Steel	Extension Spring	44.6mm	130.2mm	9mm	0.8mm	19N	0.19N/mm	BS 1408 CR3, DIN 17223, RoHS
Limited stock RS PRO Stainless Steel Extension Spring, 37.7 mm x 5.5 mm OD RS Stock No. 821-453 Subtotal (1 pack of 10 units) PHP907.90(exc. VAT) PHP90.79/unit Quantity	Stainless Steel	Extension Spring	37.7mm	116.1mm	5.5mm	0.5mm	6.5N	0.07N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Steel Extension Spring, 82.8 mm x 12 mm OD RS Stock No. 751-900 Subtotal (1 pack of 10 units) PHP892.14(exc. VAT) PHP89.214/unit Quantity	Steel	Extension Spring	82.8mm	241.8mm	12mm	1.1mm	35.8N	0.2N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Steel Extension Spring, 47.6 mm x 7 mm OD RS Stock No. 751-786 Subtotal (1 pack of 10 units) PHP797.00(exc. VAT) PHP79.70/unit Quantity	Steel	Extension Spring	47.6mm	147.3mm	7mm	0.63mm	12.2N	0.11N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 27.2 mm x 4 mm OD RS Stock No. 751-663 Subtotal (1 pack of 10 units) PHP855.25(exc. VAT) PHP85.525/unit Quantity	Steel	Extension Spring	27.2mm	95.7mm	4mm	0.36mm	4.26N	0.06N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 66.2 mm x 13 mm OD RS Stock No. 751-922 Subtotal (1 pack of 10 units) PHP1,060.07(exc. VAT) PHP106.007/unit Quantity	Steel	Extension Spring	66.2mm	178.2mm	13mm	1.2mm	42.2N	0.32N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Stainless Steel Extension Spring, 47.6 mm x 7 mm OD RS Stock No. 821-510 Subtotal (1 pack of 10 units) PHP392.17(exc. VAT) PHP39.217/unit Quantity	Stainless Steel	Extension Spring	47.6mm	147.3mm	7mm	0.63mm	10.2N	0.09N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Steel Extension Spring, 75.4 mm x 11 mm OD RS Stock No. 751-887 Subtotal (1 pack of 10 units) PHP1,122.72(exc. VAT) PHP112.272/unit Quantity	Steel	Extension Spring	75.4mm	224.4mm	11mm	1mm	29.6N	0.17N/mm	RoHS, BS 1408 CR3, DIN 17223

Extension Springs

68 Products showing for Extension Springs

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