Page 1169 - MiSUMi 2025

Round Wire Coil Springs, Deflection I.D. Referenced,

Economy series Product Overview
Tension Springs Stainless Steel, Light Load

I.D. D Free Length L M Material
Economy series φ8 or Less +0.6mm 50 or Less ±1mm (Imported from Japan) 14
SUS304-WPB
+0.1mm
+0.8mm
60 or More ±2mm
φ10 or More
+0.1mm
Tension Springs
The same specification with 2 kinds Springs
D1 D1 D1 D1
of materials d 2D d 2D 2D d 2D d
Stainless steel imported from Japan, F F F F
and Chinese piano wire 3L 3L 3L 3L Coil Springs Round Wire

Closes Ends
Closes Ends
Closes Ends Closes Ends
(*Both Ends Not Ground) (Both Ends Ground) P.14-004
(*Both Ends Not Ground)
(Both Ends Not Ground)
QSpring Constant 0.29N/mm: Fmax. (Allowable Displacement)=L×60%
E I.D. Referenced Type is manufactured giving priority to the inner diameter, with the outer diameter for reference only. Springs
2Coil I.D. D O.D. Wire Dia. F N{kgf} Reference Tension
1Type
Q Difference between MISUMI Economy series and generic products on the market 3Free Length L D1 0.45 max. 2.65 max. {0.27} Pitch Solid Length Total Number of Coils
d
5.9
9
5
5-15*
1.7
10
20* 5.9 0.45 12 3.53 {0.36} 2.2 5 10 P.14-016
Q 72H Salt Spray Test 25* 6 0.50 15 4.41 {0.45} 1.9 7.5 14
30* 6 0.50 18 5.29 {0.54} 2.3 7.5 14
9
5
7
Generic products on the market * MISUMI Economy series Tension Springs 6-15* 7.1 0.50 12 9 2.65 {0.27} 1.9 6.6 11 Tension Springs Posts For
2.0
{0.36}
20*
0.55
3.53
8H Salt Spray Test Results 72H Salt Spray Test Results 25* 7.1 0.55 15 4.41 {0.45} 2.5 6.6 11
11
7.1
30*
3.0
6.6
{0.54}
5.29
18
0.55
35* 7.2 0.60 21 6.17 {0.63} 2.7 9 14 P.14-020
40* 7.2 0.60 24 7.06 {0.72} 3.0 9 14
Above Within 45* 7.3 0.65 27 7.94 {0.81} 2.4 13.2 19.5
90% of 3% of 50* 7.3 0.65 30 8.82 {0.90} 2.7 13.2 19.5
rusted area rusted area 60* 7.4 0.70 36 10.59 {1.08} 2.5 18.2 25 Springs Torsion
C-VUR 8-20* 9.3 0.65 12 3.53 {0.36} 2.4 6.8 9.5
25* 9.3 0.65 15 4.41 {0.45} 2.9 6.8 9.5
30* 9.4 0.70 18 5.29 {0.54} 2.7 9.1 12
35* 9.4 0.70 21 6.17 {0.63} 3.2 9.1 12 P.14-022
40* 9.4 0.70 24 7.06 {0.72} 3.6 9.1 12
60* 9.6 0.80 36 10.58 {1.08} 3.2 16.8 20
10-20* 11.4 0.70 12 3.53 {0.36} 3.3 5.6 7
· Conclusion: The antirust ability is 9 times higher than that of the generic products on the market. 25* 11.5 0.75 15 4.41 {0.45} 3.1 7.5 9 Disc Springs
30* 11.6 0.80 18 5.29 {0.54} 2.7 10.4 12
35* 11.6 0.80 21 6.17 {0.63} 3.2 10.4 12
Q Service Life Test 40* 11.6 0.80 24 7.06 {0.72} 3.6 10.4 12
12-25* 13.6 0.80 15 4.41 {0.45} 3.6 7.2 8 P.14-023
· Product Information: Material: SUS304-WPB 16-35* 18 1.00 21 6.17 {0.63} 4.7 9.5 8.5
7.06
8.5
24
1.00
18
9.5
40*
5.3
{0.72}
Specifications: Wire Diameter 1mm, O.D. 8mm, Free Length 40mm QSpring Constant 0.49N/mm: Fmax. (Allowable Displacement)=L×45%
· Test Conditions: Original Length 40mm, Allowable Deflection 19.2mm, Allowable Load 24.52N, EI.D. Referenced Type is manufactured giving priority to the inner diameter, with the outer diameter for reference only. Reference
N{kgf}
O.D.
Wire Dia.
F
2Coil I.D. D
Stretching Frequency 309 cycles/minute 1Type 3Free Length L D1 d max. max. Pitch Solid Length Total Number of Coils
5-15* 6.0 0.5 6.8 3.33 {0.34} 2.3 4.3 7.5
Generic products on the market * MISUMI Economy series Tension Springs 6-15 7.2 0.6 6.8 3.33 {0.34} 1.9 6.0 9.0
20 7.2 0.6 9.0 4.41 {0.45} 2.5 6.0 9.0
Breakage after 255,000 cycles Breakage after 787,000 cycles 25 7.2 0.6 11.3 5.49 {0.56} 3.1 6.0 9.0
C-VUF 30 7.2 0.6 13.5 6.57 {0.67} 3.8 6.0 9.0
35 7.4 0.7 15.8 7.64 {0.78} 2.7 10.5 14.0
8-20 9.4 0.7 9.0 4.41 {0.45} 3.1 6.0 7.5
10-40 11.8 0.9 18.0 8.82 {0.90} 4.4 9.9 10.0
16-50 18.4 1.2 22.5 10.98 {1.12} 6.7 11.4 8.5
E Both ends marked with * are not ground. Load (kgf)=Load N×0.101972
E The values of solid length are for reference only. There may be some variations depending on the lot. And if it is used under the limit condition of solid length, the spring
may be deformed, or damaged after using only a limited number of cycles.
E Always use within the allowable deflection Fmax.(mm).
Abnormal broken position: unconventional broken coil position, Normal broken position: hook position Ordering Part Number (1Type · 2Coil I.D. D) - 3Free Length L
presumably using low-class cheap materials with low purity with concentrated stress Example C-VUR5 - 15
How to search Search on MISUMI official website Step 1 Step 2 Select Economy series
· Conclusion: The service life is 3 times longer than that of the generic products on the market. on website 1 C-VUR 2 coil spring # MISUMI
* Generic products on the market are similar products randomly purchased by MISUMI from online or offline markets By Type By Keyword # Only MISUMI Economy series
* The test data are obtained through testing by MISUMI, which are for reference only Search on MISUMI official website and get your product
14-005 Round Wire Coil Springs 14-006