Extension Springs

In production

Extension springs are helical coil springs designed to absorb energy while resisting pulling forces. The further they are stretched, the more force is generate, making them ideal for bringing two components together.

Common applications include Throttle Turn Mechanisms in Automotive, Trampolines, Fitness Equipment and Vibration Dampening Systems.

It is available in both Music Wire material, which is ideal for temperatures between -30 C and +120 C and for use in dry environments, and stainless Steel material, which is ideal for temperatures between -200 C and +250 C and for use in both dry and humid or wet environments. Key Factors to consider when choosing a spring for an application include Spring Material and the Working Environment, Spring Dimensions in both extended and non-extended states. Material: Stainless Steel, Carbon Steel Series Code:

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Product SKUs information
Essentra Part Number	Price range	Availability	Initial Tension	Overall Length	Material	Load at Load Length
	R 41,341 - R 50,0226	Request the lead time here	1.85 N 1.85 N	5 in 127.0 mm	Stainless Steel	19.64 N 19.64 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	1.37 in 34.8 mm	Stainless Steel	33.57 N 33.57 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	2.252 in 57.2 mm	Stainless Steel	33.57 N 33.57 N

	R 39,6178 - R 47,9376	Request the lead time here	5.19 N 5.19 N	1 in 25.4 mm	Stainless Steel	58.54 N 58.54 N

	R 39,6178 - R 47,9376	Request the lead time here	5.19 N 5.19 N	1.5 in 38.1 mm	Stainless Steel	58.54 N 58.54 N

	R 39,6178 - R 47,9376	Request the lead time here	5.19 N 5.19 N	2.5 in 63.5 mm	Stainless Steel	58.54 N 58.54 N

	R 30,1785 - R 36,516	Request the lead time here	6.23 N 6.23 N	2.752 in 69.9 mm	Carbon Steel	70.28 N 70.28 N

	R 30,3218 - R 36,6894	Request the lead time here	1.78 N 1.78 N	1.5 in 38.1 mm	Carbon Steel	19.57 N 19.57 N

	R 30,3218 - R 36,6894	Request the lead time here	1.78 N 1.78 N	2.5 in 63.5 mm	Carbon Steel	19.57 N 19.57 N

	R 33,3631 - R 40,3694	Request the lead time here	1.78 N 1.78 N	4 in 101.6 mm	Carbon Steel	19.57 N 19.57 N

	R 31,9498 - R 38,6593	Request the lead time here	7.56 N 7.56 N	1.37 in 34.8 mm	Carbon Steel	83.63 N 83.63 N

	R 34,3889 - R 41,6105	Request the lead time here	7.56 N 7.56 N	2.252 in 57.2 mm	Carbon Steel	83.63 N 83.63 N

	R 30,3218 - R 36,6894	Request the lead time here	1.78 N 1.78 N	1.752 in 44.5 mm	Carbon Steel	19.57 N 19.57 N

	R 30,0302 - R 36,3366	Request the lead time here	1.78 N 1.78 N	2.752 in 69.9 mm	Carbon Steel	19.57 N 19.57 N

10335147		Request the lead time here	1.78 N 1.78 N	4.5 in 114.3 mm	Carbon Steel	19.57 N 19.57 N

	R 34,7227 - R 42,0145	Request the lead time here	7.56 N 7.56 N	2.752 in 69.9 mm	Carbon Steel	83.63 N 83.63 N

	R 36,5649 - R 44,2435	Request the lead time here	7.56 N 7.56 N	4.5 in 114.3 mm	Carbon Steel	83.63 N 83.63 N

	R 49,2564 - R 59,6003	Request the lead time here	12.32 N 12.32 N	2.5 in 63.5 mm	Carbon Steel	137.09 N 137.09 N

	R 52,684 - R 63,7476	Request the lead time here	27.89 N 27.89 N	2.752 in 69.9 mm	Carbon Steel	309.98 N 309.98 N

	R 58,0799 - R 70,2767	Request the lead time here	27.89 N 27.89 N	4.5 in 114.3 mm	Carbon Steel	309.98 N 309.98 N