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Round Coil Springs-Fmax. (Allowable Deflection) = Lx40%-45%/O.D. Referenced

:
MISUMI

    Round Coil Springs, O.D. Referenced, Piano Wire, WF / WL

    Round wire compression springs standardized so that the spring constant is the same for the same outer diameter. Select WF (maximum allowable deflection 45%) or WL (40%) by the required stroke and load.

    • Material: piano wire (SWP-A).
    • Solid length is a reference value and may vary slightly by lot. Number of uses: 1,000,000 cycles.
    • Some WF sizes (marked in the dimension table) have both end faces unground.

    Part numbers and dimensions

    Ordering example

    Type
    WF13-60

    Spring constant N/mm {kgf/mm}. WY type D12, 14 and WT type D12, 14, 20 are not available.

    Type
    D
    		WYWRWFWLWTWMWHWB
    2   0.5{0.05}    
    30.1
    {0.01}    		0.3
    {0.03}    		0.5
    {0.05}    		1.0
    {0.1}    		1.5
    {0.15}    		2.0
    {0.2}    		 3.9{0.4}
    42.9{0.3}4.9{0.5}
    52.0
    {0.2}    		2.9
    {0.3}    		5.9
    {0.6}    		9.8
    {1.0}
    6
    8
    100.2{0.02}
    12
    139.8
    {1.0}    		19.6
    {2.0}
    14
    16
    18 0.5
    {0.05}    		1.0
    {0.1}    		2.9
    {0.3}    		3.9
    {0.4}    		4.9
    {0.5}    		14.7
    {1.5}    		29.4{3.0}
    20  
    22 29.4
    {3.0}
    27 
    Fmax.F=L×75%F=L×60%F=L×45%F=L×40%F=L×40%F=L×35%F=L×30%F=L×25%

    WF: Fmax. (allowable deflection) = L×45%

    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    0.2622.251.1{0.11}WF 3-5*
    0.3254.52.2{0.22}10*
    0.3256.73.2{0.33}15*
    0.35794.4{0.45}20*
    0.35711.25.5{0.56}25*
    0.413.213.56.6{0.67}30
    0.413.215.77.6{0.78}35
    0.413.2188.8{0.9}40
    0.322.32.251.1{0.11}WF 4-5*
    0.353.14.52.2{0.22}10*
    0.45.66.73.2{0.33}15*
    0.45.694.4{0.45}20*
    0.459.911.25.5{0.56}25*
    0.459.913.56.6{0.67}30*
    0.516.515.77.6{0.78}35
    0.516.5188.8{0.9}40
    0.516.5209.8{1.0}45
    0.516.522.510.8{1.1}50
    0.516.524.712.1{1.23}55
    0.516.52712.7{1.3}60
    0.5526.429.214.3{1.46}65*
    0.5526.431.515.4{1.58}70*
    0.3522.251.1{0.11}WF 5-5*
    0.382.84.52.2{0.22}10*
    0.43.46.73.2{0.33}15*
    0.455.494.4{0.45}20*
    0.58.511.25.5{0.56}25*
    0.5513.213.56.6{0.67}30
    0.5513.215.77.6{0.78}35
    0.5520.4188.8{0.9}40
    0.620.4209.8{1.0}45
    0.620.422.510.8{1.1}50
    0.620.424.712.1{1.23}55
    0.620.42712.7{1.3}60
    0.620.429.214.3{1.5}65
    0.620.431.515.4{1.6}70
    0.42.32.251.1{0.11}WF 6-5*
    0.554.52.2{0.22}10
    0.5586.73.2{0.33}15
    0.55894.4{0.45}20
    0.61211.25.5{0.56}25
    0.651613.56.6{0.67}30
    0.651715.77.6{0.78}35
    0.6517188.8{0.9}40
    0.6517209.8{1.0}45
    0.725.222.510.8{1.1}50
    0.725.224.712.1{1.23}55
    0.725.22712.7{1.3}60
    0.725.229.214.3{1.46}65
    0.725.231.514.7{1.5}70
    0.725.23617.7{1.8}80
    0.654.52.2{0.22}WF 8-10
    0.657.56.73.2{0.33}15
    0.710.894.4{0.45}20
    0.710.811.25.5{0.56}25
    0.7514.513.56.6{0.67}30
    0.7514.515.77.6{0.78}35
    0.820188.8{0.9}40
    0.820209.8{1.0}45
    0.82022.510.8{1.1}50
    0.82024.712.1{1.23}55
    0.8527.62712.7{1.3}60
    0.8527.629.214.3{1.46}65
    0.8527.631.514.7{1.5}70
    0.8528.13617.7{1.8}80
    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    0.6554.52.2{0.22}WF10-10
    0.6556.73.2{0.33}15
    0.810.494.4{0.45}20
    0.810.411.25.5{0.56}25
    0.851413.56.6{0.67}30
    0.851415.77.6{0.78}35
    0.917.5188.8{0.9}40
    0.917.5209.8{1.0}45
    0.917.522.510.8{1.1}50
    0.917.524.712.1{1.23}55
    1.0312712.7{1.3}60
    1.03129.214.3{1.46}65
    1.03131.514.7{1.5}70
    1.0313617.7{1.8}80
    0.74.64.52.3{0.23}WF12-10
    0.74.66.73.2{0.33}15
    0.87.294.4{0.45}20
    0.87.211.25.5{0.56}25
    0.911.313.56.6{0.67}30
    0.911.315.77.6{0.78}35
    0.911.3188.8{0.9}40
    0.911.3209.8{1.0}45
    1.01822.510.8{1.1}50
    1.01824.712.1{1.23}55
    1.0182712.7{1.3}60
    1.01829.214.3{1.46}65
    1.128.131.514.7{1.5}70
    1.127.53617.7{1.8}80
    0.754.94.52.3{0.23}WF13-10
    0.866.73.2{0.33}15
    0.8694.4{0.45}20
    0.857.211.25.5{0.56}25
    1.01513.56.6{0.67}30
    1.01515.77.6{0.78}35
    1.015188.8{0.9}40
    1.015209.8{1.0}45
    1.01522.510.8{1.1}50
    1.12224.712.1{1.23}55
    1.1222712.7{1.3}60
    1.12229.214.3{1.46}65
    1.12231.514.7{1.5}70
    1.1223617.7{1.8}80
    1.233.640.519.9{2.0}90
    0.85.26.73.2{0.33}WF14-15
    0.97.994.4{0.45}20
    0.97.911.25.5{0.56}25
    1.01213.56.6{0.67}30
    1.01215.77.6{0.78}35
    1.012188.8{0.9}40
    1.012209.8{1.0}45
    1.118.222.510.8{1.1}50
    1.118.224.712.1{1.23}55
    1.118.22712.7{1.3}60
    1.227.629.214.3{1.46}65
    1.227.631.514.7{1.5}70
    1.227.63617.7{1.8}80
    1.339.740.519.9{2.0}90
    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    0.96.36.73.2{0.33}WF16-15
    1.08.794.4{0.45}20
    1.08.711.25.5{0.56}25
    1.112.813.56.6{0.67}30
    1.112.815.77.6{0.78}35
    1.218.6188.8{0.9}40
    1.218.6209.8{1.0}45
    1.218.622.510.8{1.1}50
    1.218.624.712.1{1.23}55
    1.326.82712.7{1.3}60
    1.326.829.214.3{1.46}65
    1.326.831.514.7{1.5}70
    1.4363617.7{1.8}80
    1.436.440.519.9{2.0}90
    1.2998.8{0.9}WF18-20
    1.312.411.210.8{1.1}25
    1.312.413.512.7{1.3}30
    1.416.115.714.7{1.5}35
    1.5211817.7{1.8}40
    1.5212019.9{2.03}45
    1.52122.522.1{2.25}50
    1.628.824.724.3{2.48}55
    1.628.82726.5{2.7}60
    1.628.829.228.7{2.93}65
    1.737.431.530.9{3.15}70
    1.737.43635.3{3.6}80
    1.27.298.8{0.9}WF20-20
    1.39.811.210.8{1.1}25
    1.412.613.512.7{1.3}30
    1.412.615.714.7{1.5}35
    1.516.51817.7{1.8}40
    1.516.52019.9{2.03}45
    1.621.622.522.1{2.25}50
    1.621.624.724.3{2.48}55
    1.621.62726.5{2.7}60
    1.728.129.228.7{2.93}65
    1.728.131.530.9{3.15}70
    1.728.13635.3{3.6}80
    1.37.898.8{0.9}WF22-20
    1.410.511.211.0{1.12}25
    1.410.513.513.2{1.35}30
    1.513.515.715.4{1.57}35
    1.513.51817.7{1.8}40
    1.722.120.219.8{2.02}45
    1.722.122.522.1{2.25}50
    1.722.124.724.2{2.47}55
    1.828.82726.5{2.7}60
    1.828.829.228.6{2.92}65
    1.828.831.530.9{3.15}70
    1.828.83635.3{3.6}80
    1.714.113.513.2{1.35}WF27-30
    1.714.115.715.4{1.57}35
    1.714.11817.7{1.8}40
    1.921.420.219.8{2.02}45
    1.921.422.522.1{2.25}50
    2.02624.724.2{2.47}55
    2.0262726.5{2.7}60
    2.02629.228.6{2.92}65
    2.02631.530.9{3.15}70
    2.0263635.3{3.6}80
    • Load calculation: load = spring constant × deflection

    (SI units) N = N/mm × F mm; kgf = kgf/mm × F mm

    (kgf=N×0.101972)

    WF types marked * have unground end faces.

    Solid length is a reference value. Values vary slightly between lots.

    Service life: 1 million cycles

    WL: Fmax. (allowable deflection) = L×40%

    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    0.21.720.98{0.1}WL 2-5*
    0.265.242.0 {0.2}10*
    0.265.262.9 {0.3}15*
    0.29983.9 {0.4}20*
    0.299104.9 {0.5}25*
    0.310.8125.9 {0.6}30*
    0.32.122.0 {0.2}WL 3-5*
    0.353.943.9 {0.4}10*
    0.46.565.9 {0.6}15*
    0.46.587.8 {0.8}20*
    0.4513109.8 {1.0}25*
    0.45131211.8 {1.2}30*
    0.45131413.7 {1.4}35*
    0.5211615.7 {1.6}40*
    0.352.122.0 {0.2}WL 4-5*
    0.45543.9 {0.4}10*
    0.45565.9 {0.6}15*
    0.5987.8 {0.8}20
    0.59109.8 {1.0}25
    0.5513.91211.8 {1.2}30
    0.5513.91413.7 {1.4}35
    0.621.61615.7 {1.6}40
    0.621.61817.7 {1.8}45
    0.621.62019.6 {2.0}50
    0.621.62221.6 {2.2}55
    0.65332423.5 {2.4}60
    0.42.322.0 {0.2}WL 5-5*
    0.453.443.9 {0.4}10*
    0.5565.9 {0.6}15*
    0.557.787.8 {0.8}20
    0.610.8109.8 {1.0}25
    0.610.81211.8 {1.2}30
    0.6515.61413.7 {1.4}35
    0.6515.61615.7 {1.6}40
    0.7201817.7 {1.8}45
    0.7202019.6 {2.0}50
    0.723.12221.6 {2.2}55
    0.75332423.5 {2.4}60
    0.7532.32625.5 {2.6}65
    0.7532.32827.5 {2.8}70
    0.452.522.0 {0.2}WL 6-5*
    0.554.743.9 {0.4}10
    0.554.765.9 {0.6}15
    0.65987.8 {0.8}20
    0.659109.8 {1.0}25
    0.713.71211.8 {1.2}30
    0.713.71413.7 {1.4}35
    0.713.71615.7 {1.6}40
    0.7518.91817.7 {1.8}45
    0.7518.92019.6 {2.0}50
    0.7518.92221.6 {2.2}55
    0.826.42423.5 {2.4}60
    0.826.42625.5 {2.6}65
    0.8530.62827.5 {2.8}70
    0.8534.93231.4 {3.2}80
    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    0.654.743.9{0.4}WL 8-10
    0.758.565.9{0.6}15
    0.758.587.8{0.8}20
    0.758.5109.8{1.0}25
    0.811.21211.8{1.2}30
    0.811.21413.7{1.4}35
    0.811.21615.7{1.6}40
    0.8515.31817.7{1.8}45
    0.8515.32019.6{2.0}50
    0.8515.32221.6{2.2}55
    0.919.42423.5{2.4}60
    0.919.42625.5{2.6}65
    1.0312827.5{2.8}70
    1.0313231.4{3.2}80
    0.755.343.9{0.4}WL10-10
    0.86.465.9{0.6}15
    0.86.487.8{0.8}20
    0.910.8109.8{1.0}25
    0.910.81211.8{1.2}30
    0.910.81413.7{1.4}35
    0.910.81615.7{1.6}40
    1.0171817.7{1.8}45
    1.0172019.6{2.0}50
    1.0172221.6{2.2}55
    1.0172423.5{2.4}60
    1.1242625.5{2.6}65
    1.1242827.5{2.8}70
    1.124.23231.4{3.2}80
    0.84.844.0{0.4}WL12-10
    0.97.265.9{0.6}15
    0.97.287.8{0.8}20
    0.97.2109.8{1.0}25
    1.010.51211.8{1.2}30
    1.010.51413.7{1.4}35
    1.010.51615.7{1.6}40
    1.115.41817.7{1.8}45
    1.115.42019.6{2.0}50
    1.115.42221.6{2.2}55
    1.222.82423.5{2.4}60
    1.222.82625.5{2.6}65
    1.222.82827.5{2.8}70
    1.334.53231.4{3.2}80
    0.855.144.0{0.4}WL13-10
    0.96.365.9{0.6}15
    1.08.787.8{0.8}20
    1.08.7109.8{1.0}25
    1.113.21211.8{1.2}30
    1.113.21413.7{1.4}35
    1.113.21615.7{1.6}40
    1.113.21817.7{1.8}45
    1.113.22019.6{2.0}50
    1.113.22221.6{2.2}55
    1.113.22423.5{2.4}60
    1.218.62625.5{2.6}65
    1.218.62827.5{2.8}70
    1.437.83231.4{3.2}80
    1.437.83635.3{3.6}90
    1.07.565.9{0.6}WL14-15
    1.07.587.8{0.8}20
    1.07.5109.8{1.0}25
    1.1111211.8{1.2}30
    1.1111413.7{1.4}35
    1.1111615.7{1.6}40
    1.215.61817.7{1.8}45
    1.215.62019.6{2.0}50
    1.215.62221.6{2.2}55
    1.215.62423.5{2.4}60
    1.322.12625.5{2.6}65
    1.322.12827.5{2.8}70
    1.322.13231.4{3.2}80
    1.543.53635.3{3.6}90
    dSolid length
    (reference)    		F
    max.    		Load
    N {kgf}
    max.    		Type
    Type D-L
    1.18.265.9{0.6}WL16-15
    1.18.287.8{0.8}20
    1.210109.8{1.0}25
    1.2101211.8{1.2}30
    1.2101413.7{1.4}35
    1.2101615.7{1.6}40
    1.4211817.7{1.8}45
    1.4212019.6{2.0}50
    1.4212221.6{2.2}55
    1.4212423.5{2.4}60
    1.529.72625.5{2.6}65
    1.529.72827.5{2.8}70
    1.529.73231.4{3.2}80
    1.6403635.3{3.6}90
    1.510823.5{2.4}WL18-20
    1.6121029.4{3.0}25
    1.6121235.3{3.6}30
    1.716.21441.2{4.2}35
    1.716.21647.1{4.8}40
    1.819.81853.0{5.4}45
    1.819.82058.8{6.0}50
    1.819.82264.7{6.6}55
    1.819.82470.6{7.2}60
    2.0322676.5{7.8}65
    2.0322882.4{8.4}70
    2.0323294.1{9.6}80
    2.24336105.9{10.8}90
    2.24340117.7{12.0}100
    1.610.4823.5{2.4}WL20-20
    1.610.41029.4{3.0}25
    1.712.81235.3{3.6}30
    1.712.81441.2{4.2}35
    1.815.81647.1{4.8}40
    1.815.81853.0{5.4}45
    1.815.82058.8{6.0}50
    1.815.82264.7{6.6}55
    2.0242470.6{7.2}60
    2.0242676.5{7.8}65
    2.0242882.4{8.4}70
    2.237.43294.1{9.6}80
    2.237.436105.9{10.8}90
    2.237.440117.7{12.0}100
    1.710.8823.5{2.4}WL22-20
    1.813.31029.4{3.0}25
    1.813.31235.3{3.6}30
    1.813.31441.2{4.2}35
    2.0201647.1{4.8}40
    2.0201853.0{5.4}45
    2.0202058.8{6.0}50
    2.0202264.7{6.6}55
    2.228.62470.6{7.2}60
    2.228.62676.5{7.8}65
    2.228.62882.4{8.4}70
    2.228.63294.1{9.6}80
    2.334.536105.9{10.8}90
    2.334.540117.7{12.0}100
    2.1141235.3{3.6}WL27-30
    2.1141441.2{4.2}35
    2.3191647.1{4.8}40
    2.3191853.0{5.4}45
    2.3192058.8{6.0}50
    2.3192264.7{6.6}55
    2.5282470.6{7.2}60
    2.5282676.5{7.8}65
    2.634.52882.4{8.4}70
    2.634.53294.1{9.6}80
    2.846.736105.9{10.8}90
    2.846.740117.7{12.0}100
    • Load calculation: load = spring constant × deflection

    WL types marked * have unground end faces.

    Round Coil Springs-Fmax. (Allowable Deflection) = Lx40%-45%/O.D. Referenced | MISUMI | MISUMI Vietnam