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 34,2015 - R 41,3838	Request the lead time here	0.71 N 0.71 N	2.5 in 63.5 mm	Stainless Steel	7.67 N 7.67 N

	R 49,2564 - R 59,6003	Request the lead time here	12.32 N 12.32 N	2.252 in 57.2 mm	Carbon Steel	137.09 N 137.09 N

	R 50,0223 - R 60,527	Request the lead time here	27.89 N 27.89 N	2 in 50.8 mm	Carbon Steel	309.98 N 309.98 N

	R 55,8559 - R 67,5856	Request the lead time here	12.32 N 12.32 N	4.5 in 114.3 mm	Carbon Steel	137.09 N 137.09 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	1 in 25.4 mm	Stainless Steel	33.57 N 33.57 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 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 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 45,4692 - R 55,0177	Request the lead time here	1.48 N 1.48 N	4 in 101.6 mm	Stainless Steel	16.30 N 16.30 N

	R 39,6555 - R 47,9831	Request the lead time here	1.48 N 1.48 N	2.252 in 57.2 mm	Stainless Steel	16.30 N 16.30 N

	R 46,1703 - R 55,866	Request the lead time here	6.30 N 6.30 N	1.252 in 31.8 mm	Stainless Steel	69.66 N 69.66 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	3 in 76.2 mm	Stainless Steel	33.57 N 33.57 N

	R 39,2369 - R 47,4766	Request the lead time here	5.19 N 5.19 N	2.252 in 57.2 mm	Stainless Steel	58.54 N 58.54 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	1.252 in 31.8 mm	Stainless Steel	33.57 N 33.57 N

	R 28,712 - R 34,7416	Request the lead time here	0.85 N 0.85 N	2.252 in 57.2 mm	Carbon Steel	9.21 N 9.21 N

	R 28,712 - R 34,7416	Request the lead time here	2.22 N 2.22 N	1.252 in 31.8 mm	Carbon Steel	23.58 N 23.58 N

	R 39,6178 - R 47,9376	Request the lead time here	3.04 N 3.04 N	1.122 in 28.5 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	2.752 in 69.9 mm	Stainless Steel	33.57 N 33.57 N

10335123	R 28,436 - R 34,4075	Request the lead time here	0.85 N 0.85 N	0.752 in 19.1 mm	Carbon Steel	9.21 N 9.21 N

	R 34,3281 - R 34,3281	Request the lead time here	2.22 N 2.22 N	1.752 in 44.5 mm	Carbon Steel	23.58 N 23.58 N