COIL SPRINGS
| Type | Features | Type | Size (outer diameter) |
Full length | Maximum deflection |
Load N {kgf} |
|||
|---|---|---|---|---|---|---|---|---|---|
| Catalog No. | min. | max. | min. | max. | min. | max. | |||
| Round wire coil springs |  ●The spring constant is fixed for each diameter. (Load capacity varies depending on the full length.) |
WY | φ3 | φ16 | 5 | 70 | 75% (1 million shots) |
0.38 {0.04} |
10.3 {1.05} |
| WR | φ3 | φ27 | 5 | 90 | 60% (1 million shots) |
0.9 {0.09} |
23.5 {2.4} |
||
| WF | φ3 | φ27 | 5 | 90 | 45% (1 million shots) |
1.1 {0.11} |
35.3 {3.6} |
||
| WL | φ2 | φ27 | 5 | 100 | 40% (1 million shots) |
0.98 {0.1} |
117.7 {12.0} |
||
| WT | φ3 | φ27 | 5 | 80 | 40% (1 million shots) |
2.9 {0.3} |
125.5 {12.8} |
||
| WM | φ3 | φ27 | 5 | 100 | 35% (1 million shots) |
3.4 {0.4} |
171.6 {17.5} |
||
| WH | φ4 | φ27 | 5 | 100 | 30% (1 million shots) |
4.9 {0.5} |
441.3 {45.0} |
||
| WB | φ3 | φ27 | 5 | 100 | 25% (1 million shots) |
4.9 {0.5} |
735.5 {75.0} |
||
| NWL (Inner diameter reference) |
φ5.5 (Inner dia.) |
φ16.6 (Inner dia.) |
30 | 60 | 40% (1 million shots) |
13.7 {1.4} |
27.5 {2.8} |
||
| NWM (Inner diameter reference) |
φ5.5 (Inner dia.) |
φ16.6 (Inner dia.) |
30 | 60 | 32% (1 million shots) |
20.6 {2.1} |
34.3 {3.5} |
||
| WP (Long type) |
φ11.5 | φ17 | 100 | 500 | 70% (1 million shots) |
21.3 {2.2} |
34.3 {3.5} |
||
●Operating temperatures
The load capacities and other data listed in the Catalog are those measured at normal temperatures (40°C or below).
If the service environment temperature exceeds the normal temperature range, the load capacity and durability count
may decrease, although this varies depending on a variety of conditions.
The maximum operating environment temperature is 80°C. Although the heat resistance temperature of the
spring wire material is higher than the operating temperature (120°C for round wires, 200°C for shaped wires),
a significant diminishment in function is expected if the spring is used at a temperature above the maximum service
environment temperature. This does not apply to stainless steel types (
click
here).
●Maximum allowable deflection
Do not use the springs at deflections exceeding the maximum allowable deflection. If used at higher deflections,
the spring load capacity and durability will diminish, and in the worst case the spring may break.
If a round wire coil spring is used even once at a stroke exceeding the
maximum allowable deflection, the L dimension will be shortened.
| Type | Features | Type | Size Outer dia. (inner dia.) |
Full length | Maximum deflection |
Deflection N {kgf} |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Load | Catalog No. |
min. | max. | min. | max. | min. | max. | ||||
| Shaped wire coil springs | High deflection type |
 ●Load capacity is fixed for each diameter. |
Light Heavy |
SWY |
φ11 | φ42 | 20 | 300 | 65% (1 million shots) |
29.4 {3.0} |
392.3 {40.0} |
| 70% (300,000 shots) |
31.4 {3.2} |
425.6 {43.4} |
|||||||||
SWU |
φ10.5 | φ43 | 15 | 300 | 60% (1 million shots) |
68.6 {7.0} |
588.4 {60.0} |
||||
| 65% (300,000 shots) |
73.9 {7.5} |
637.4 {65.0} |
|||||||||
SWR |
φ10.5 | φ50 | 15 | 400 | 50% (1 million shots) |
78.5 {8.0} |
1323.9 {135.0} |
||||
| 55% (300,000 shots) |
87.2 {8.8} |
1456.3 {148.5} |
|||||||||
SWS |
φ10.5 | φ52 | 20 | 300 | 40% (1 million shots) |
87.2 {8.9} |
1569.0 {160.0} |
||||
| 45% (300,000 shots) |
97.1 {9.9} |
1765.2 {180.0} |
|||||||||
| Heavy-load type |  ●Load capacity is fixed for each diameter. |
SWC |
φ6 (φ3) |
φ30 (φ15) |
15 | 200 | 50% (1 million shots) |
27 {2.8} |
392 {40.0} |
||
| 60% (300,000 shots) |
32 {3.3} |
471 {48.0} |
|||||||||
SWF |
φ6 (φ3) |
φ70 (φ38.5) |
10 | 500 | 40% (1 million shots) |
47 {4.8} |
3136 {320} |
||||
| 50% (300,000 shots) |
59 {6.0} |
3920 {400} |
|||||||||
SWL |
φ6 (φ3) |
φ70 (φ38.5) |
10 | 350 | 32% (1 million shots) |
63 {6.4} |
4782 {488} |
||||
| 40% (300,000 shots) |
78 {8.0} |
5978 {610} |
|||||||||
SWM |
φ6 (φ3) |
φ70 (φ38.5) |
10 | 350 | 25.6% (1 million shots) |
79 {8.0} |
6664 {680} |
||||
| 32% (300,000 shots) |
98 {10} |
8330 {850} |
|||||||||
SWH |
φ6 (φ3) |
φ70 (φ38.5) |
10 | 350 | 19.2% (1 million shots) |
110 {11} |
10046 {1024} |
||||
| 24% (300,000 shots) |
137 {14} |
12557 {1280} |
|||||||||
SWB |
φ6 (φ3) |
φ70 (φ38.5) |
10 | 350 | 16% (1 million shots) |
142 {14} |
13655 {1392} |
||||
| 20% (300,000 shots) |
177 {18} |
17069 {1740} |
|||||||||
SWG |
φ10 (φ5) |
φ50 (φ25) |
15 | 200 | 16% (1 million shots) |
392 {40} |
9807 {1000} |
||||
| 20% (300,000 shots) |
490 {50} |
12258 {1250} |
|||||||||
SWZ |
φ10 (φ5) |
φ50 (φ25) |
25 | 200 | 10.5% (1 million shots) |
416 {42} |
12959 {1321} |
||||
| 13% (300,000 shots) |
515 {53} |
16045 {1636} |
|||||||||
SWV |
φ10 (φ5) |
φ50 (φ25) |
30 | 200 | 10.5% (1 million shots) |
644 {66} |
14904 {1228} |
||||
| 13% (300,000 shots) |
797 {81} |
18452 {1882} |
|||||||||
| High speed type |  |
- | SWX | φ20 (φ9.5) |
φ40 (φ20.5) |
25 | 100 | 10% (10 million shots) |
1275 {130} |
5198 {530} |
|
●Coating of shaped wire coil springs
MISUMI shaped wire coil springs are coated for identification and to prevent corrosion.
(SWX and SWU□ are not coated.)
●Spring load calculation method
Load=Spring constant×Deflection
N=N/mm × Fmm (SI unit)
kgf=kgf/mm × Fmm
(kgf=N×0.101972)
