Extension Springs Stainless Steel 316 type

Part Number	CAD	D0 (mm)	d (mm)	L0 (mm)	L1 (mm)	P (N)	T (N)	R (N/mm)	Qty / Price
E00630070250X		1.60	0.18	6.35	9.15	0.52	0.11	0.146	Add
E00630070310X		1.60	0.18	7.87	11.88	0.52	0.11	0.102	Add
E00630070380X		1.60	0.18	9.65	15.26	0.52	0.11	0.073	Add
E00630070440X		1.60	0.18	11.18	18.18	0.52	0.11	0.058	Add
E00630070500X		1.60	0.18	12.70	19.71	0.52	0.11	0.058	Add
E00630080250X		1.60	0.20	6.35	8.55	0.79	0.15	0.292	Add
E00630080310X		1.60	0.20	7.87	11.02	0.79	0.15	0.204	Add
E00630080380X		1.60	0.20	9.65	13.65	0.79	0.15	0.160	Add
E00630080440X		1.60	0.20	11.18	16.06	0.79	0.15	0.131	Add
E00630080500X		1.60	0.20	12.70	18.99	0.79	0.15	0.102	Add
E00630080620X		1.60	0.20	15.75	23.08	0.79	0.15	0.088	Add
E00630080750X		1.60	0.20	19.05	27.85	0.79	0.15	0.073	Add
E00630090250X		1.60	0.23	6.35	8.07	1.15	0.22	0.540	Add
E00630090310X		1.60	0.23	7.87	10.23	1.15	0.22	0.394	Add
E00630090380X		1.60	0.23	9.65	12.68	1.15	0.22	0.306	Add
E00630090440X		1.60	0.23	11.18	14.92	1.15	0.22	0.248	Add
E00630090500X		1.60	0.23	12.70	17.24	1.15	0.22	0.204	Add
E00630090620X		1.60	0.23	15.75	21.53	1.15	0.22	0.160	Add
E00630090750X		1.60	0.23	19.05	26.12	1.15	0.22	0.131	Add
E00630110250X		1.60	0.28	6.35	7.47	2.18	0.37	1.619	Add

316 STAINLESS STEEL EXTENSION SPRINGS

Click here for more details about our types of Extension Spring

Stock sizes in 316 Stainless Steel

 MATERIALS

Stainless Steel: Type 316 per ASTM A313 (Chemical and Physical only)

Stainless steel is not recommended above 300 degrees C.

Stainless steel 316 is slightly magnetic due to cold working during manufacturing. Stainless steel springs may have a slight residue of nickel on the surface of the wire. This is normal and will not affect the function of the part.

Wire diameter is prior to forming.

All SPEC springs have uniform body diameter and are produced with full twist loops. They are wound with initial tension, therefore some force is required before the coils are initially separated.

Coil Direction (helix)

Right or left according to machine setup at time of run.

Coil count is for reference only.

Do = Outside diameter

d = Wire diameter

Lo = Free length (reference use only)

L1 = Maximum extended length

P = Load at L1

T = Initial tension

R = spring rate

Free Length

Free length is approximate only

ENDS

Full twist loop. Special ends on request.

End Position

Alignment of end loops will vary . All springs have full twist loops, but physical shape may appear different. If ends are critical to your application, please contact our Engineering Department.

TOLERANCES

Do;         

1.60 to 3.02 mm +/- 0.08 mm

3.05 to 6.10 mm +/- 0.13 mm

6.12 to 12.70 mm +/- 0.20 mm

12.73 to 25.40 mm +/- 0.38 mm

25.43 to 31.12 mm +/- 0.51 mm

31.14 to 37.08 mm +/- 0.76 mm

37.11 to 50.80 mm +/- 1.02 mm

LOADS & SPRING RATE

Initial tension T is for reference only and will vary.

Load and rate values are shown for both music wire and stainless steel in their respective columns.

Load P at L1 and spring rate R are +/- 10.0%. Load at any other point is for reference only. Maximum load P is attained at extended length L1.

Load values at lengths other than L1, can be approximated by multiplying the proposed deflection by the rate R and adding the initial tension T. P = (Lx – L) x R + T where Lx is the new extended length. Load at Lx should be reference only. Contact our Engineering Department if more stringent requirements are needed.

Surface Finish

Plain wire, passivated per ASTM A967

Special finishes available upon request.

Packaging

Parts are bulk-packed. Due to physical characteristics, tangling can occur during transit on wire sizes under 0.89mm. Please inquire about ultrasonic cleaning and special packaging when ordering

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