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Tension Springs/Configurable Length (Part Numbers)

Tension Springs/Configurable Length

Outer diameter size (Φ7, Φ11, Φ13, Φ15, Φ17) standard added!
A tension spring whose free length can be specified in units of 1 mm.
The outer diameter and length can be freely specified according to the intended use.
Piano wire is also based on the outer diameter.

(i)Caution

  • Please check the content on our website as the PDF does not contain the most up-to-date information.

PDF

引張りばね フリー指定タイプ:関連画像引張りばね フリー指定タイプ:関連画像
TypeMaterial
WFSPSWP-A
UFSPSUS304-WPB
TypeMaterial
BWFSPSWP-A
BUFSPSUS304-WPB

Specifications

Part Number-d-S
WFSP3
UFSP20
-
-
0.3
2.6
-
-
10
498
[ ! ]Maximum deflection factor is a numerical value for static loads.
When applying a dynamic load, use the maximum deflection factor × 0.65.
[ ! ]For the maximum deflection, the Web specifications show a percentage, and the catalog PDF shows the value when the S dimension is 50. 
Both values give the same result when used.
[ ! ]For the standard spring constant, the Web specifications show a value where the S dimension is 10, and the catalog PDF shows the value when the S dimension is 50.
Part NumberWire
Dia.
d mm
S 1mm IncrementMaximum deflection factor (S)
Standard Spring Constant
(When S = 10)
N/mm
Initial Tension
N
TypeDWFSPUFSPWFSPUFSPWFSPUFSP
BWFSPBUFSPBWFSPBUFSPBWFSPBUFSP
WFSP
UFSP
BWFSP
BUFSP
30.310〜300176%174%0.130.110.180.21
0.482%84%0.600.500.530.64
40.4172%174%0.200.200.310.38
0.596%92%0.750.650.770.92
50.510〜500168%164%0.350.300.490.59
0.6100%102%0.900.801.011.21
60.6158%164%0.500.450.710.85
0.872%72%2.352.052.132.55
70.7140%132%0.650.600.961.15
0.970%64%2.602.252.943.5
80.8148%152%0.900.801.261.51
182%84%2.902.553.044.26
9110〜550112%114%1.951.702.453.43
1.266%66%5.254.654.416.17
101148%140%1.351.201.962.74
1.288%86%3.653.254.316.03
1.458%56%8.507.507.6410.7
111160%152%1.000.851.452.01
1.292%90%2.652.353.244.51
1.462%60%6.205.406.398.87
121232%226%0.750.651.181.65
1.2142%140%1.951.752.843.98
1.492%92%4.554.005.397.55
1.662%60%9.408.308.7212.21
131240%234%0.550.500.931.29
1.2144%142%1.551.352.173.01
1.494%94%3.503.053.955.49
1.664%62%7.106.207.7510.76
141.2208%192%1.201.052.062.88
1.4138%130%2.702.403.825.35
1.694%90%5.554.906.669.32
1.868%66%10.509.3010.614.84
151.2212%196%0.950.851.52.09
1.4140%132%2.151.903.034.21
1.696%92%4.403.804.746.59
1.870%68%8.457.359.2512.85
161.4192%182%1.751.553.044.26
1.6132%130%3.553.155.17.14
1.896%94%6.655.908.3311.66
268%70%11.8510.5012.617.64
171.4194%184%1.451.252.213.08
1.6134%132%2.902.504.035.6
1.898%96%5.554.856.749.37
270%72%9.908.6510.915.13
181.6176%174%2.402.104.025.63
1.8128%128%4.504.006.479.06
294%96%7.957.001014
2.362%60%17.0015.0518.726.18
201.8168%156%3.152.805.17.14
2122%120%5.554.957.9411.12
2.382%80%11.8510.5015.221.28
2.658%58%23.2020.5023.633.04
222150%148%4.053.607.3510.3
2.3106%104%8.607.6011.816.5
2.674%74%16.7514.8019.627.4
2.954%54%30.4526.9533.346.6
252.3144%144%5.604.959.813.7
2.6100%104%10.859.6015.722
2.976%72%19.6517.4022.531.5
3.256%54%33.7529.8534.348
282.6138%128%7.456.6012.717.8
2.9102%98%13.4511.9017.624.6
3.278%74%22.9020.2527.438.4
3.562%58%37.4533.1039.254.9
■Accuracy Standards
• D Dimension Tolerance
D/d*1Tolerance
Less than 8±1.5% of D dimension (Min. ±0.2mm)
8~20±2% of D dimension (Min. ±0.3mm)
*1. D/d = Spring Index
• S Dimension Tolerance
When d≤0.5, ±2 x Wire Dia.
(Ex: When d=0.3, ±0.6)
When d≥0.6, ±Wire Dia.
(Ex: When d=1.0, ±1.0)
 
• Calculate the maximum deflection and spring constant using the following formula.
• Maximum deflection
   Maximum deflection (mm) = S × maximum deflection factor (%)
• Spring constant(reference value)
   Spring constant (N/mm) = reference spring constant × 10/S

Example) Calculation of maximum deflection and spring constant of UFSP20-2.6-498
   Maximum deflection(mm) = 498×58% = 288.84Spring constant(N/mm) = 20.50 ×10= 0.41
498
[ ! ]For the maximum deflection, the Web specifications show a percentage, and the catalog PDF shows the value when the S dimension is 50. 
Both values give the same result when used.
[ ! ]For the standard spring constant, the Web specifications show a value where the S dimension is 10, and the catalog PDF shows the value when the S dimension is 50.

Part Number 

CAD Data download and 3D preview are not available because the part number has not yet been determined.

  • *In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
  • Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
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Part Number
UFSP22-2.0-[10-550/1]
UFSP22-2.3-[10-550/1]
UFSP22-2.6-[10-550/1]
UFSP22-2.9-[10-550/1]
UFSP25-2.3-[10-550/1]
UFSP25-2.6-[10-550/1]
UFSP25-2.9-[10-550/1]
UFSP25-3.2-[10-550/1]
UFSP28-2.6-[10-550/1]
UFSP28-2.9-[10-550/1]
UFSP28-3.2-[10-550/1]
UFSP28-3.5-[10-550/1]
WFSP3-0.3-[10-300/1]
WFSP3-0.4-[10-300/1]
WFSP4-0.4-[10-300/1]
WFSP4-0.5-[10-300/1]
WFSP5-0.5-[10-500/1]
WFSP5-0.6-[10-500/1]
WFSP6-0.6-[10-500/1]
WFSP6-0.8-[10-500/1]
WFSP7-0.7-[10-500/1]
WFSP7-0.9-[10-500/1]
WFSP8-0.8-[10-500/1]
WFSP8-1.0-[10-500/1]
WFSP9-1.0-[10-550/1]
WFSP9-1.2-[10-550/1]
WFSP10-1.0-[10-550/1]
WFSP10-1.2-[10-550/1]
WFSP10-1.4-[10-550/1]
WFSP11-1.0-[10-550/1]
WFSP11-1.2-[10-550/1]
WFSP11-1.4-[10-550/1]
WFSP12-1.0-[10-550/1]
WFSP12-1.2-[10-550/1]
WFSP12-1.4-[10-550/1]
WFSP12-1.6-[10-550/1]
WFSP13-1.0-[10-550/1]
WFSP13-1.2-[10-550/1]
WFSP13-1.4-[10-550/1]
WFSP13-1.6-[10-550/1]
WFSP14-1.2-[10-550/1]
WFSP14-1.4-[10-550/1]
WFSP14-1.6-[10-550/1]
WFSP14-1.8-[10-550/1]
WFSP15-1.2-[10-550/1]
WFSP15-1.4-[10-550/1]
WFSP15-1.6-[10-550/1]
WFSP15-1.8-[10-550/1]
WFSP16-1.4-[10-550/1]
WFSP16-1.6-[10-550/1]
WFSP16-1.8-[10-550/1]
WFSP16-2.0-[10-550/1]
WFSP17-1.4-[10-550/1]
WFSP17-1.6-[10-550/1]
WFSP17-1.8-[10-550/1]
WFSP17-2.0-[10-550/1]
WFSP18-1.6-[10-550/1]
WFSP18-1.8-[10-550/1]
WFSP18-2.0-[10-550/1]
WFSP18-2.3-[10-550/1]
WFSP20-1.8-[10-550/1]
WFSP20-2.0-[10-550/1]
WFSP20-2.3-[10-550/1]
WFSP20-2.6-[10-550/1]
WFSP22-2.0-[10-550/1]
WFSP22-2.3-[10-550/1]
WFSP22-2.6-[10-550/1]
WFSP22-2.9-[10-550/1]
WFSP25-2.3-[10-550/1]
WFSP25-2.6-[10-550/1]
WFSP25-2.9-[10-550/1]
WFSP25-3.2-[10-550/1]
WFSP28-2.6-[10-550/1]
WFSP28-2.9-[10-550/1]
WFSP28-3.2-[10-550/1]
WFSP28-3.5-[10-550/1]
Part NumberMinimum order quantityVolume DiscountDays to ShipRoHSMaterial Hook Opposing Angle Outer Dia. D
(Ø)
Initial Tension
(N)
Standard Spring Constant
(N/mm)
Wire Dia.
(Ø)
S
(mm)
1 Piece(s) 16 Day(s) or more 10--2210.33.6210 ~ 550
1 Piece(s) 16 Day(s) or more 10--2216.57.62.310 ~ 550
1 Piece(s) 16 Day(s) or more 10--2227.414.82.610 ~ 550
1 Piece(s) 16 Day(s) or more 10--2246.626.952.910 ~ 550
1 Piece(s) 16 Day(s) or more 10--2513.704.952.310 ~ 550
1 Piece(s) 16 Day(s) or more 10--2522.009.62.610 ~ 550
1 Piece(s) 16 Day(s) or more 10--2531.5017.42.910 ~ 550
1 Piece(s) 16 Day(s) or more 10--2548.0029.853.210 ~ 550
1 Piece(s) 16 Day(s) or more 10--2817.806.62.610 ~ 550
1 Piece(s) 16 Day(s) or more 10--2824.611.92.910 ~ 550
1 Piece(s) 16 Day(s) or more 10--2838.4020.253.210 ~ 550
1 Piece(s) 16 Day(s) or more 10--2854.9033.13.510 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-30.180.130.310 ~ 300
1 Piece(s) 16 Day(s) or more 10SWP-A-30.530.60.410 ~ 300
1 Piece(s) 16 Day(s) or more 10SWP-A-40.310.20.410 ~ 300
1 Piece(s) 16 Day(s) or more 10SWP-A-40.770.750.510 ~ 300
1 Piece(s) 16 Day(s) or more 10SWP-A-50.490.350.510 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-51.010.90.610 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-60.710.50.610 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-62.132.350.810 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-70.960.650.710 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-72.942.60.910 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-81.260.90.810 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-83.042.9110 ~ 500
1 Piece(s) 16 Day(s) or more 10SWP-A-92.451.95110 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-94.415.251.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-101.961.35110 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-104.313.651.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-107.648.51.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-111.451110 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-113.242.651.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-116.396.21.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-121.180.75110 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-122.841.951.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-125.394.551.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-128.729.41.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-130.930.55110 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-132.171.551.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-133.953.51.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-137.757.11.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-142.061.21.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-143.822.71.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-146.665.551.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-1410.610.51.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-151.500.951.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-153.032.151.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-154.744.41.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-159.258.451.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-163.041.751.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-165.13.551.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-168.336.651.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-1612.611.85210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-172.211.451.410 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-174.032.91.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-176.745.551.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-1710.909.9210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-184.022.41.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-186.474.51.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-1810.007.95210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-1818.7172.310 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-205.13.151.810 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-207.945.55210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2015.2011.852.310 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2023.6023.22.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-227.354.05210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2211.88.62.310 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2219.6016.752.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2233.3030.452.910 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-259.805.62.310 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2515.7010.852.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2522.5019.652.910 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2534.333.753.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2812.707.452.610 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2817.6013.452.910 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2827.422.93.210 ~ 550
1 Piece(s) 16 Day(s) or more 10SWP-A-2839.2037.453.510 ~ 550

Loading...

Basic Information

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