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Spring Pair · Stability Chair - Heavy

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SKU : ST05129

$150.00 CAD

These heavy tension Stability Chair Springs are made exclusively for Merrithew^™ Stability Chairs. Each is nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension throughout its life through demanding studio use.

Sold as a pair.

Note, this item is for use with Merrithew^™/STOTT PILATES^® equipment only. Questions? Have one of our specialists help! Contact us

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Details
Specs
Warranty

Spring performance

Our springs are built to withstand vigorous use in professional or commercial environments
To maintain performance and warranty, springs require replacement every two years

Spring resistance details

Overall length of the spring is 18 in with an initial tension of 14.75 lbs (load required to open the coils without extension)
Spring rate of 3.888 lb/inch (load required to extend spring every inch after the initial tension is applied)

Spring specs
Spring	Initial tension	Spring rate	Length	Coil diameter	Spring ball O-ring color
Leg Spring	3.4–4.5 lbs (1.5–2.0 kg)	.625 lbs/in +/- 5% (.11 N/mm +/- 5%)	22 in (55.9 cm)	1.2 in (3 cm)	White
Leg Spring · Enhanced	3.0–4.0 lbs (1.4–1.8 kg)	.625 lbs/in +/- 5% (.11 N/mm +/- 5%)	22 in (55.9 cm)	1.2 in (3 cm)	Green
Light Arm Spring	2.2–3.2 lbs (1.0–1.5 kg)	.378 lbs/in +/- 10% (.07 N/mm +/- 10%)	19 in (48.3 cm)	1.1 in (2.8 cm)	Yellow
Reformer Spring · 25%	2.25–3.25 lbs (1.0–1.5 kg)	.311 lbs/in +/- 5% (.05 N/mm +/- 5%)	19.5 in (49.5 cm)	1.5 in (4 cm)	White
Reformer Spring · 50%	3.0–4.0 lbs (1.4–1.8 kg)	.625 lbs/in +/- 5% (.11 N/mm +/- 5%)	19.5 in (49.5 cm)	1.5 in (4 cm)	Blue
Reformer Spring · 100%	6.0–7.5 lbs (2.7–3.4 kg)	1.25 lbs/in +/- 5% (.22 N/mm +/- 5%)	19.5 in (49.5 cm)	1.5 in (4 cm)	Red
Reformer Spring · 125%	7.0–11.0 lbs (3.2–5.0 kg)	1.56 lbs/in +/- 5% (.27 N/mm +/- 5%)	19.5 in (49.5 cm)	1.5 in (4 cm)	Black
Roll-Down Spring	2.9–3.9 lbs (1.3–1.8 kg)	.495 lbs/in +/- 10% (.09 N/mm +/- 10%)	19 in (48.3 cm)	1.2 in (3 cm)	Black
Push-Thru Spring / Stability Chair · Light Spring	5.5–7.5 lbs (2.5–3.4 kg)	1.157 lbs/in +/- 10% (.2 N/mm +/- 10%)	18 in (45.7 cm)	1.1 in (2.8 cm)	Blue
Trapeze Spring / Stability Chair · Heavy Spring	14.75 lbs +/- 1.5 lbs (6.7 kg +/- .7 kg)	3.888 lbs/in +/- 5% (.68 N/mm +/- 5%)	18 in (45.7 cm)	1.2 in (3 cm)	Red