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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, 26.4 mm x 3.5 mm OD RS Stock No. 821-469 Subtotal (1 pack of 10 units) $12.61(exc. GST) $1.261/unit Quantity	Stainless Steel	Extension Spring	26.4mm	41.1mm	3.5mm	0.55mm	13.1N	0.75N/mm	RoHS, BS 1408 CR3, DIN 17223
In Stock RS PRO Steel Extension Spring, 34.5 mm x 5 mm OD RS Stock No. 751-792 Subtotal (1 pack of 10 units) $12.45(exc. GST) $1.245/unit Quantity	Steel	Extension Spring	34.5mm	59.5mm	5mm	0.7mm	22.6N	0.77N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 105 mm x 15 mm OD RS Stock No. 751-938 Subtotal (1 pack of 5 units) $29.88(exc. GST) $5.976/unit Quantity	Steel	Extension Spring	105mm	292mm	15mm	1.4mm	57.1N	0.26N/mm	BS 1408 CR3, RoHS, 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) $42.37(exc. GST) $4.237/unit Quantity	Steel	Extension Spring	44.6mm	130.2mm	9mm	0.8mm	19N	0.19N/mm	BS 1408 CR3, DIN 17223, RoHS
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) $16.03(exc. GST) $3.206/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, 26.4 mm x 3.5 mm OD RS Stock No. 751-736 Subtotal (1 pack of 10 units) $12.53(exc. GST) $1.253/unit Quantity	Steel	Extension Spring	26.4mm	41.1mm	3.5mm	0.55mm	15.7N	0.9N/mm	DIN 17223, BS 1408 CR3, RoHS
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) $47.77(exc. GST) $9.554/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, 49 mm x 7 mm OD RS Stock No. 751-871 Subtotal (1 pack of 10 units) $41.86(exc. GST) $4.186/unit Quantity	Steel	Extension Spring	49mm	81.7mm	7mm	1mm	45.3N	1.18N/mm	BS 1408 CR3, DIN 17223, RoHS
In Stock RS PRO Steel Extension Spring, 87.7 mm x 17 mm OD RS Stock No. 751-950 Subtotal (1 pack of 5 units) $23.68(exc. GST) $4.736/unit Quantity	Steel	Extension Spring	87.7mm	224.7mm	17mm	1.6mm	11N	0.46N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 38.5 mm x 7.5 mm OD RS Stock No. 751-809 Subtotal (1 pack of 10 units) $10.43(exc. GST) $1.043/unit Quantity	Steel	Extension Spring	38.5mm	106mm	7.5mm	0.7mm	15.4N	0.2N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 22.1 mm x 3.2 mm OD RS Stock No. 751-685 Subtotal (1 pack of 10 units) $32.90(exc. GST) $3.29/unit Quantity	Steel	Extension Spring	22.1mm	42.3mm	3.2mm	0.45mm	10.7N	0.49N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Steel Extension Spring, 30.4 mm x 6 mm OD RS Stock No. 751-742 Subtotal (1 pack of 10 units) $31.32(exc. GST) $3.132/unit Quantity	Steel	Extension Spring	30.4mm	86.6mm	6mm	0.55mm	9.5N	0.15N/mm	BS 1408 CR3, RoHS, DIN 17223
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) $48.88(exc. GST) $4.888/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 Steel Extension Spring, 59 mm x 8.5 mm OD RS Stock No. 751-916 Subtotal (1 pack of 10 units) $59.54(exc. GST) $5.954/unit Quantity	Steel	Extension Spring	59mm	98.6mm	8.5mm	1.2mm	62.8N	1.35N/mm	DIN 17223, BS 1408 CR3, RoHS
In Stock RS PRO Steel Extension Spring, 32.9 mm x 3.6 mm OD RS Stock No. 751-679 Subtotal (1 pack of 10 units) $15.31(exc. GST) $1.531/unit Quantity	Steel	Extension Spring	32.9mm	87.6mm	3.6mm	0.4mm	6.53N	0.11N/mm	RoHS, DIN 17223, BS 1408 CR3
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) $37.91(exc. GST) $3.791/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, 32.6 mm x 9 mm OD RS Stock No. 751-821 Subtotal (1 pack of 10 units) $45.79(exc. GST) $4.579/unit Quantity	Steel	Extension Spring	32.6mm	86.1mm	9mm	0.8mm	19N	0.3N/mm	DIN 17223, RoHS, BS 1408 CR3
In Stock RS PRO Steel Extension Spring, 27.7 mm x 5.5 mm OD RS Stock No. 751-714 Subtotal (1 pack of 10 units) $28.17(exc. GST) $2.817/unit Quantity	Steel	Extension Spring	27.7mm	80mm	5.5mm	0.5mm	7.8N	0.13N/mm	RoHS, DIN 17223, BS 1408 CR3
In Stock RS PRO Steel Gate Spring, 250 mm RS Stock No. 894-6800 Subtotal (1 unit) $19.36(exc. GST) $19.36/unit Quantity	Steel	Gate Spring	250mm	-	-	-	-	-	No
In Stock RS PRO Steel Extension Spring, 44.1 mm x 6.3 mm OD RS Stock No. 751-859 Subtotal (1 pack of 10 units) $37.59(exc. GST) $3.759/unit Quantity	Steel	Extension Spring	44.1mm	73.8mm	6.3mm	0.9mm	37.1N	1.06N/mm	DIN 17223, RoHS, BS 1408 CR3

Extension Springs

68 Products showing for Extension Springs

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