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Fixed Force Tension Springs

Tension gas springs, also known as reverse acting gas springs, are constructed from 316 stainless steel. The force on these springs pulls the piston rod inward, operating in the opposite direction of other gas springs. Great for use on doors, lids, hatches, and hoods that need to stay closed. In its relaxed position, the spring is compressed; you must pull
to extended it.

These units can withstand a wide range of temperatures from -40º F to 300º F.

400 Series Fixed Force Tension Gas Springs

SKU	Rod Diameter (A)	Body Diameter (B)	Stroke (C)	Compressed Length (D)	Extended Length (E)	Male Thread	Min Max Lifting Force – # (N)
SKU 400-2	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 2.11 (53.59)	Compressed Length (D) 7.40 (187.96)	Extended Length (E) 9.40 (238.76)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-3	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 3.11 (78.99)	Compressed Length (D) 9.40 (238.76)	Extended Length (E) 12.40 (314.96)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-4	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 4.11 (104.39)	Compressed Length (D) 11.40 (289.56)	Extended Length (E) 15.40 (391.16)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-6	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 6.11 (155.19)	Compressed Length (D) 15.40 (391.16)	Extended Length (E) 21.40 (543.56)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-7	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 7.11 (180.59)	Compressed Length (D) 17.40 (441.96)	Extended Length (E) 24.40 (619.76)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-8	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 8.11 (205.99)	Compressed Length (D) 19.40 (492.76)	Extended Length (E) 27.40 (695.96)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)
SKU 400-10	Rod Diameter (A) 0.31 (8.0)	Body Diameter (B) 0.75 (19.1)	Stroke (C) 10.11 (295.79)	Compressed Length (D) 23.40 (594.36)	Extended Length (E) 33.40 (848.36)	Male Thread M6 x 1	Min Max Lifting Force – # (N) 35-85 (156-378)

Notes:

Force increments of 5 pounds for 400 series.
Product length tolerance is ± .08 in. (2.0 mm)
Force tolerance is 3-8 pounds over the nominal force.
Do not stroke more than 5 times a minute. Fast operation rates lead to excessive heat buildup resulting in internal seal damage.
Tension springs are filled with oil and are under pressure. Please dispose of it properly.
Do not heat, open, or puncture.
Contact Ameritool for modified standards or for engineered specials that meet your exact needs.
EE denotes no end fittings on spring.

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