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Round Wire Springs -Spring Constant 1.5~3.9 N/mm-

  • Volume Discount

Part Number Configured Part Number is shown.




[ M ] Material: Spring Steel (ASTM A228)

Specifications

Round Wire Springs -Spring Constant 1.5~3.9 N/mm-:Related Image
■WT: Fmax. (Allowable Deflection) = L x 40% (L x 35%)
dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
0.31.7322.9{0.3}WT3-5*
0.4545.9{0.6}10*
0.458.7868.8{0.9}15*
0.458.78811.8{1.2}20*
0.514.51014.7{1.5}25*
0.42.722.9{0.3}WT4-5*
0.42.745.9{0.6}10*
0.56.568.8{0.9}15*
0.559.63811.8{1.2}20
0.559.631014.7{1.5}25
0.6151217.7{1.8}30
0.6151420.6{2.1}35
0.6522.11623.5{2.4}40
0.452.3623.9{0.4}WT5-5*
0.53.2547.8{0.8}10*
0.66.3611.8{1.2}15
0.66.3815.7{1.6}20
0.712.61019.6{2.0}25
0.712.61223.5{2.4}30
0.7517.31427.5{2.8}35
0.7517.31427.5{2.8}(40)
0.82415.830.9{3.2}(45)
0.82417.534.3{3.5}(50)
0.8532.319.337.8{3.9}(55)
0.8532.32141.2{4.2}(60)
0.853422.744.5{4.5}(65)
0.944.624.548.1{4.9}(70)
0.52.3823.9{0.4}WT6-5*
0.64.3547.8{0.8}10
0.64.35611.8{1.2}15
0.77.7815.7{1.6}20
0.77.71019.6{2.0}25
0.8141223.5{2.4}30
0.8141427.5{2.8}35
0.8518.71631.4{3.2}40
0.8518.71835.3{3.6}45
0.924.82039.2{4.0}50
0.924.81937.8{3.9}(55)
0.924.82141.2{4.2}(60)
0.926.122.744.5{4.5}(65)
14324.548.1{4.9}(70)
1432854.9{5.6}(80)

dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
0.74.3847.8{0.8}WT8-10
0.86.8611.8{1.2}15
0.86.8815.7{1.6}20
0.86.81019.6{2.0}25
0.910.81223.5{2.4}30
0.910.81427.5{2.8}35
117.51631.4{3.2}40
117.51835.3{3.6}45
117.52039.2{4.0}50
1.127.52243.1{4.4}55
1.127.52447.1{4.8}60
1.127.52651.0{5.2}65
1.127.52854.9{5.6}70
1.2423262.8{6.4}80
0.855.5347.8{0.8}WT10-10
0.96.75611.8{1.2}15
0.96.75815.7{1.6}20
1101019.6{2.0}25
1101223.5{2.4}30
1101427.5{2.8}35
1101631.4{3.2}40
1.114.31835.3{3.6}45
1.114.32039.2{4.0}50
1.221.62243.1{4.4}55
1.221.62447.1{4.8}60
1.221.62651.0{5.2}65
1.332.52854.9{5.6}70
1.332.53262.8{6.4}80
16611.8{1.2}WT13-15
1.18.25815.7{1.6}20
1.18.251019.6{2.0}25
1.211.11223.5{2.4}30
1.211.11427.5{2.8}35
1.211.11631.4{3.2}40
1.211.11835.3{3.6}45
1.315.62039.2{4.0}50
1.315.62243.1{4.4}55
1.315.62447.1{4.8}60
1.4212651.0{5.2}65
1.4212854.9{5.6}70
1.4213262.8{6.4}80
1.27.5611.8{1.2}WT16-15
1.39.43815.7{1.6}20
1.412.61019.6{2.0}25
1.412.61223.5{2.4}30
1.412.61427.5{2.8}35
1.412.61631.4{3.2}40
1.622.41835.3{3.6}45
1.622.42039.2{4.0}50
1.622.42243.1{4.4}55
1.728.92447.1{4.8}60
1.728.92651.0{5.2}65
1.728.92854.9{5.6}70
1.728.93262.8{6.4}80

dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
1.610.8831.4{3.2}WT18-20
1.713.61039.2{4.0}25
1.713.61247.1{4.8}30
1.713.61454.9{5.6}35
1.816.71662.8{6.4}40
1.920.51870.6{7.2}45
1.920.52078.5{8.0}50
2262286.3{8.8}55
2262494.1{9.6}60
22626102.0{10.4}65
22628109.8{11.2}70
2.131.532125.5{12.8}80
1.811.3831.4{3.2}WT22-20
1.811.31039.2{4.0}25
1.913.31247.1{4.8}30
1.913.31454.9{5.6}35
2161662.8{6.4}40
2.119.51870.6{7.2}45
2.119.52078.5{8.0}50
2.328.22286.3{8.8}55
2.328.22494.1{9.6}60
2.328.226102.0{10.4}65
2.328.228109.8{11.2}70
2.433.632125.5{12.8}80
2.113.21247.1{4.8}WT27-30
2.317.91454.9{5.6}35
2.317.91662.8{6.4}40
2.420.41870.6{7.2}45
2.628.62078.5{8.0}50
2.628.62286.3{8.8}55
2.628.62494.1{9.6}60
2.628.626102.0{10.4}65
2.839.228109.8{11.2}70
2.839.232125.5{12.8}80
- Load Calculation Method: Load = Spring Constant x Deflection
    (Int'l Unit)N=N/mmxFmm
kgf=kgf/mmxFmm
(kgf=Nx0.101972)

[ ! ]Allowable Deflection of (L) Size
WT5-40Fmax.= L x 35%
WT5-45Fmax.= L x 35%
WT5-50Fmax.= L x 35%
WT5-55Fmax.= L x 35%
WT5-60Fmax.= L x 35%
WT5-65Fmax.= L x 35%
WT5-70Fmax.= L x 35%
WT6-55Fmax.= L x 35%
WT6-60Fmax.= L x 35%
WT6-65Fmax.= L x 35%
WT6-70Fmax.= L x 35%
WT6-80Fmax.= L x 35%

[ ! ]Both ends of * marked WT Type springs are not ground.
[ ! ]The values of solid length are for reference only.
 There may be some variations depending on the lot.
[ ! ]Operation frequency: One million times
[ ! ]Product Overview >> Click here
[ ! ]How to use coil springs and precautions >> Click here
■Spring Constant [ ! ]D12 and 14 for WY Type and D12,14 and 20 for WT Type are not available.
 TypeWYWRWFWLWTWMWHWB
D 
2          0.5{0.05}             
3 N/mm
0.1
{kgf/mm} {0.01}
  N/mm 0.3
{kgf/mm} {0.03}
  N/mm 0.5
{kgf/mm} {0.05}
  N/mm 1.0
{kgf/mm} {0.1}
  1.5
{0.15}
  2.0
{0.2}
     3.9{0.4} 
4             2.9{0.3}  4.9{0.5} 
5         N/mm 2.0
{kgf/mm} {0.2}
  N/mm 2.9
{kgf/mm} {0.3}
  N/mm 5.9
{kgf/mm} {0.6}
  N/mm 9.8
{kgf/mm} {1.0}
 
6                
8                
10 N/mm 0.2
{kgf/mm} {0.02}
               
12                
13             N/mm 9.8
{kgf/mm} {1.0}
  N/mm 19.6
{kgf/mm} {2.0}
 
14                
16                
18    N/mm 0.5
{kgf/mm} {0.05}
  N/mm 1.0
{kgf/mm} {0.1}
  N/mm 2.9
{kgf/mm} {0.3}
  N/mm 3.9
{kgf/mm} {0.4}
  N/mm 4.9
{kgf/mm} {0.5}
  N/mm 14.7
{kgf/mm} {1.5}
  29.4{3.0} 
20                  
22                N/mm 29.4
{kgf/mm} {3.0}
 
27                 
Fmax.F=Lx75%F=Lx60%F=Lx45%F=Lx40%F=Lx40%F=Lx35%F=Lx30%F=Lx25%
■WM:Fmax. (Allowable Deflection) = L x 35%
dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
0.352.51.83.4{0.4}WM3-5*
0.383.33.56.9{0.7}  10*
0.4575.310.3{1.1}  15*
0.511.5713.7{1.4}  20*
0.511.57.514.7{1.5}  (25)
0.5520.4917.7{1.8}  (30)
0.42.31.73.9{0.4}WM4-5*
0.453.43.56.9{0.7}  10*
0.55.15.210.8{1.1}  15*
0.557.7713.7{1.4}  20
0.611.78.717.7{1.8}  25
0.611.710.520.6{2.1}  30
0.6517.612.224.0{2.5}  35
0.6517.61223.5{2.4}  (40)
0.52.81.74.9{0.5}WM5-5*
0.64.23.59.8{1.0}  10
0.656.55.214.7{1.5}  15
0.656.5720.6{2.1}  20
0.79.18.725.5{2.6}  25
0.7512.710.530.4{3.1}  30
0.817.412.235.3{3.6}  35
0.8523.81441.2{4.2}  40
0.8523.815.846.1{4.7}  45
0.923.81543.5{4.5}  (50)
0.93016.549.0{5.0}  (55)
0.9301853.0{5.4}  (60)
0.93017.652.0{5.3}  (65)
0.93019.658.8{6.0}  (70)
0.552.81.74.9{0.5}WM6-5*
0.654.73.59.8{1.0}  10
0.7585.214.7{1.5}  15
0.758720.6{2.1}  20
0.8513.68.725.5{2.6}  25
0.8513.610.530.4{3.1}  30
0.91812.235.3{3.6}  35
0.9181441.2{4.2}  40
0.91815.846.1{4.7}  45
0.91817.551.0{5.2}  50
1.03119.255.9{5.7}  55
1.0311853.0{5.4}  (60)
1.03118.854.9{5.6}  (65)
1.147.32058.8{6.0}  (70)
1.148.422.465.9{6.7}  (80)
0.754.23.59.8{1.0}WM8-10
0.98.55.214.7{1.5}  15
0.98.5720.6{2.1}  20
0.98.58.725.5{2.6}  25
0.98.510.530.4{3.1}  30
1.01312.235.3{3.6}  35
1.0131441.2{4.2}  40
1.119.815.846.1{4.7}  45
1.119.817.551.0{5.2}  50
1.231.219.255.9{5.7}  55
1.231.22161.8{6.3}  60
1.231.222.764.7{6.6}  65
1.231.224.571.6{7.3}  70
1.344.22882.4{8.4}  80

dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
0.95.23.59.8{1.0}WM10-10
1.07.75.214.7{1.5}  15
1.07.7720.6{2.1}  20
1.1118.725.5{2.6}  25
1.11110.530.4{3.1}  30
1.216.212.235.3{3.6}  35
1.216.21441.2{4.2}  40
1.322.115.846.1{4.7}  45
1.322.117.551.0{5.2}  50
1.322.119.255.9{5.7}  55
1.432.12161.8{6.3}  60
1.432.122.764.7{6.6}  65
1.432.124.571.6{7.3}  70
1.432.22882.4{8.4}  80
1.05.53.510.3{1.1}WM12-10
1.17.45.214.7{1.5}  15
1.17.4720.6{2.1}  20
1.17.48.725.5{2.6}  25
1.210.210.530.4{3.1}  30
1.210.212.235.3{3.6}  35
1.314.31441.2{4.2}  40
1.314.315.846.1{4.7}  45
1.314.317.551.0{5.2}  50
1.419.619.255.9{5.7}  55
1.419.62161.8{6.3}  60
1.526.322.764.7{6.6}  65
1.526.324.571.6{7.3}  70
1.636.82882.4{8.4}  80
1.053.510.3{1.1}WM13-10
1.28.45.214.7{1.5}  15
1.311.7720.6{2.1}  20
1.311.78.725.5{2.6}  25
1.414.510.530.4{3.1}  30
1.414.512.235.3{3.6}  35
1.414.51441.2{4.2}  40
1.414.515.846.1{4.7}  45
1.414.517.551.0{5.2}  50
1.522.519.255.9{5.7}  55
1.522.52161.8{6.3}  60
1.628.822.764.7{6.6}  65
1.628.824.571.6{7.3}  70
1.737.42882.4{8.4}  80
1.737.431.592.9{9.5}  90
1.27.55.214.7{1.5}WM14-15
1.39.8720.6{2.1}  20
1.413.38.725.5{2.6}  25
1.413.310.530.4{3.1}  30
1.413.312.235.3{3.6}  35
1.413.31441.2{4.2}  40
1.517.315.846.1{4.7}  45
1.517.317.551.0{5.2}  50
1.517.319.255.9{5.7}  55
1.623.22161.8{6.3}  60
1.623.222.764.7{6.6}  65
1.730.624.571.6{7.3}  70
1.730.62882.4{8.4}  80
1.839.631.592.7{9.5}  90

dSolid LengthF
max.
Load
N{kgf}
max.
Part Number
Type D-L
1.37.85.214.7{1.5}WM16-15
1.49.8720.6{2.1}  20
1.512.58.725.5{2.6}  25
1.512.510.530.4{3.1}  30
1.61512.235.3{3.6}  35
1.6151441.2{4.2}  40
1.720.415.846.1{4.7}  45
1.720.417.551.0{5.2}  50
1.82719.255.9{5.7}  55
1.8272161.8{6.3}  60
1.82722.764.7{6.6}  65
1.82724.571.6{7.3}  70
1.8272882.4{8.4}  80
1.934.231.592.7{9.5}  90
1.711.9734.3{3.5}WM18-20
1.814.48.742.2{4.3}  25
1.814.410.551.0{5.2}  30
1.814.412.259.8{6.1}  35
1.814.41468.6{7.0}  40
2.02215.877.5{7.9}  45
2.02217.585.3{8.7}  50
2.02219.294.1{9.6}  55
2.02221103.0{10.5}  60
2.234.122.7110.8{11.3}  65
2.234.124.5119.6{12.2}  70
2.234.128137.3{14.0}  80
2.341.431.5154.0{15.7}  90
2.341.435171.6{17.5}  100
1.811.7734.3{3.5}WM20-20
1.811.78.742.2{4.3}  25
1.914.310.551.0{5.2}  30
1.914.312.259.8{6.1}  35
1.914.31468.6{7.0}  40
2.01715.877.5{7.9}  45
2.01717.585.3{8.7}  50
2.224.819.294.1{9.6}  55
2.224.821103.0{10.5}  60
2.224.822.7110.8{11.3}  65
2.224.824.5119.6{12.2}  70
2.43628137.3{14.0}  80
2.43631.5154.0{15.7}  90
2.43635171.6{17.5}  100
1.912734.3{3.5}WM22-20
2.0148.742.2{4.3}  25
2.01410.551.0{5.2}  30
2.01412.259.8{6.1}  35
2.0141468.6{7.0}  40
2.32315.877.5{7.9}  45
2.32317.585.3{8.7}  50
2.32319.294.1{9.6}  55
2.32321103.0{10.5}  60
2.43022.7110.8{11.3}  65
2.43024.5119.6{12.2}  70
2.43028137.3{14.0}  80
2.64031.5154.0{15.7}  90
2.64035171.6{17.5}  100
2.31410.551.0{5.2}WM27-30
2.41712.259.8{6.1}  35
2.4171468.6{7.0}  40
2.41815.877.5{7.9}  45
2.62317.585.3{8.7}  50
2.62319.294.1{9.6}  55
2.62321103.0{10.5}  60
2.83122.7110.8{11.3}  65
2.83124.5119.6{12.2}  70
2.83128137.3{14.0}  80
3.043.531.5154.0{15.7}  90
3.043.535171.6{17.5}  100
- Load Calculation Method: Load = Spring Constant x Deflection
    (Int'l Unit)N=N/mmxFmm
kgf=kgf/mmxFmm
(kgf=Nx0.101972)

[ ! ]The values of solid length are for reference only.
 There may be some variations depending on the lot.
[ ! ]Operation frequency: One million times
[ ! ]Product Overview >> Click here
[ ! ]How to use coil springs and precautions >> Click here
[ ! ]Allowable Deflection of (L) Size
WM3-25Fmax.= L x 30%
WM3-30Fmax.= L x 30%
WM4-40Fmax.= L x 30%
WM5-50Fmax.= L x 30%
WM5-55Fmax.= L x 30%
WM5-60Fmax.= L x 30%
WM5-65Fmax.= L x 27%
WM5-70Fmax.= L x 28%
WM6-60Fmax.= L x 30%
WM6-65Fmax.= L x 29%
WM6-70Fmax.= L x 28%
WM6-80Fmax.= L x 28%

[ ! ]Both ends of * marked WM Type springs are not ground.

Basic Information

Material Spring Steel (ASTM A228)

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Stock

Specification/Dimensions

  • Material

    • Spring Steel (ASTM A228)
  • End Surface Condition

    • With Grinding
    • Without Grinding
  • Allowable Load (Configurable Range)(N)

    • 1.51~4.50
    • 4.51~8.50
    • 8.51~16.00
    • 16.01~30.00
    • 30.01~50.00
    • 50.01~73.00
    • 73.01~107.00
    • 107.01~150.00
    • 150.01~230.00
  • Max. Load(N)

    • 2.9
    • 3.4
    • 3.9
    • 4.9
    • 5.9
    • 6.9
    • 7.8
    • 8.8
    • 9.8
    • 10.3
    • 10.8
    • 11.8
    • 13.7
    • 14.7
    • 15.7
    • 17.7
    • 19.6
    • 20.6
    • 23.5
    • 24
    • 25.5
    • 27.5
    • 30.4
    • 30.9
    • 31.4
    • 34.3
    • 35.3
    • 37.8
    • 39.2
    • 41.2
    • 42.2
    • 43.1
    • 43.5
    • 44.5
    • 46.1
    • 47.1
    • 48.1
    • 49
    • 51
    • 52
    • 53
    • 54.9
    • 55.9
    • 58.8
    • 59.8
    • 61.8
    • 62.8
    • 64.7
    • 65.9
    • 68.6
    • 70.6
    • 71.6
    • 77.5
    • 78.5
    • 82.4
    • 85.3
    • 86.3
    • 92.7
    • 92.9
    • 94.1
    • 102
    • 103
    • 109.8
    • 110.8
    • 119.6
    • 125.5
    • 137.3
    • 154
    • 171.6
  • Height with Max. Load L-F(mm)

    • 3
    • 3.2
    • 3.3
    • 6
    • 6.5
    • 9
    • 9.7
    • 9.8
    • 12
    • 13
    • 15
    • 16.3
    • 17.5
    • 18
    • 19.5
    • 21
    • 22.8
    • 24
    • 26
    • 27
    • 28
    • 29.2
    • 30
    • 32.5
    • 33
    • 35
    • 35.7
    • 35.8
    • 36
    • 38.5
    • 39
    • 42
    • 42.3
    • 45.5
    • 46.2
    • 47.4
    • 48
    • 50
    • 50.4
    • 52
    • 57.6
    • 58.5
    • 65
  • Free Length L(mm)

    • 5
    • 10
    • 15
    • 20
    • 25
    • 30
    • 35
    • 40
    • 45
    • 50
    • 55
    • 60
    • 65
    • 70
    • 80
    • 90
    • 100
    [15-200/1mm increments]
  • O.D. D( or D1)(φ)

    • 3
    • 4
    • 5
    • 6
    • 8
    • 10
    • 12
    • 13
    • 14
    • 16
    • 18
    • 20
    • 22
    • 27
  • I.D. D-2d( or D)(φ)

    • 1.9
    • 2
    • 2.1
    • 2.2
    • 2.24
    • 2.3
    • 2.4
    • 2.7
    • 2.8
    • 2.9
    • 3
    • 3.1
    • 3.2
    • 3.3
    • 3.4
    • 3.5
    • 3.6
    • 3.7
    • 3.8
    • 4
    • 4.1
    • 4.2
    • 4.3
    • 4.4
    • 4.5
    • 4.6
    • 4.7
    • 4.8
    • 4.9
    • 5
    • 5.4
    • 5.6
    • 5.8
    • 6
    • 6.2
    • 6.4
    • 6.5
    • 6.6
    • 7.2
    • 7.4
    • 7.6
    • 7.8
    • 8
    • 8.2
    • 8.3
    • 8.8
    • 9
    • 9.2
    • 9.4
    • 9.6
    • 9.8
    • 10
    • 10.2
    • 10.4
    • 10.6
    • 10.8
    • 11
    • 11.2
    • 11.4
    • 11.6
    • 12.2
    • 12.4
    • 12.6
    • 12.8
    • 13
    • 13.2
    • 13.4
    • 13.6
    • 13.8
    • 14
    • 14.2
    • 14.4
    • 14.6
    • 14.8
    • 15.2
    • 15.6
    • 16
    • 16.2
    • 16.4
    • 16.8
    • 17.2
    • 17.4
    • 17.8
    • 18
    • 18.2
    • 18.4
    • 21
    • 21.4
    • 21.8
    • 22.2
    • 22.4
    • 22.8
  • Spring Constant(N/mm)

    • 1.5
    • 2
    • 2.9
    • 3.9
    • 4.9
  • Type

    • WM
    • WT
  • CAD

    • 2D
    • 3D

Days to Ship

  • Days to Ship

    • 1 Day
    • 4 Days or Less

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