Extension Spring: OD 7.49 mm, FL 27.99 mm, Music WireStandard Extension Series (metric)Selection to Match Your Needs Lee Spring LEM070CB 03 M is a precision extension spring from the Standard Extension Series (metric) series, engineered for applications requiring reliable quality extension springs. This spring features a 7.49-mm outside diameter (0.295 inch) with 6.07-mm loop inside diameter (0.239 inch) and extends from a free length of 27.99 mm (1.102 inch) to a maximum extended length of 70.21 mm (2.764 inch). Made from Music Wire with a 0.69-mm wire diameter (0.027 inch), the spring delivers a spring rate of 0.31 N/mm (1.77 lb/inch) through its 25 total coils with an initial tension of 2.18 N (0.49 lb) for predictable extension behavior. The spring supports a maximum load of 15.391 N (3.46 lb) at full extension with a body length of 18.49 mm (0.728 inch). The spring features Inline loop position and Zinc Plate and Bake per ASTM B633 finish for optimal performance. Extension Springs: Standard SeriesThe Lee Spring Standard Extension Spring Series includes a wide range of size and rate combinations and in both inch and metric sizes. Standard Series springs are available in Music Wire, Type 302 Stainless Steel and Type 316 Stainless Steel. Metric Series springs are available in Music Wire and Type 302 Stainless Steel. The Music Wire springs are provided with a plating finish for light corrosion resistance. The Type 302 Stainless Steel springs are passivated, while Type 316 Stainless Steel springs are passivated and ultrasonically cleaned. Lee Spring's Stock Extension Springs are supplied with full diameter loops (either to machine or crossover center style) at a random position with the exception of Metric Extension Springs which are specified to meet DIN Standards. Loop openings are approximately one wire diameter and the direction of wind is factory optional. Standard Extension Series (metric) Extension Springs have useful applications in various industries, including:
...and many more applications 269821
Product
Extension OD 0.295 in, Length 1.102 in, Music Wire
Product
Extension OD 7.49 mm, Length 27.99 mm, Music Wire
Part Number
LEM070CB 03 M
Series
Standard Extension Series (metric)
Outside Diameter (inch)
0.295
Outside Diameter (cm)
0.749
Outside Diameter (mm)
7.49
Wire Diameter (inch)
0.027
Wire Diameter (cm)
0.069
Wire Diameter (mm)
0.69
Max Load (gm)
1569.5
Max Load (lb)
3.46
Max Load (kg)
1.5695
Max Load (N)
15.391
Rate (gm/cm) 316
Rate (gm/mm) 31.6
Rate (kg/cm) 0.316
Rate (kg/mm) 0.0316
Rate (lb/in) 1.77
Rate (N/cm) 3.1
Rate (N/mm) 0.31
Max Extended Length (cm) 7.021
Max Extended Length (in) 2.764
Max Extended Length (mm)
70.21
Initial Tension (gm)
222.3
Initial Tension (kg)
0.2223
Initial Tension (lb)
0.49
Initial Tension (N)
2.18
Free Length (cm)
2.799
Free Length (inch) 1.102
Free Length (mm) 27.99
Material Music Wire
Loop Inside Diameter (cm) 0.607
Loop Inside Diameter (in) 0.239
Loop Inside Diameter (mm) 6.07
Ends Standard Loops
Loop Position Inline
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.027
0.295
0.012
1.102
0.022
25
0.49
0.098
1.77
0.177
2.764
3.46
0.027
0.728
Inline
0.295
0.012
1.102
0.022
25
0.49
0.098
1.77
0.177
2.764
3.46
|
| Quantity | Price |
|---|---|
| 1 - 19 | $8.570 |
| 20 - 49 | $5.170 |
| 50 - 99 | $2.720 |
| 100 - 199 | $1.690 |
| 200 - 299 | $1.645 |
| 300 - 399 | $1.642 |
| 400 - 499 | $1.641 |
| 500 - 599 | $1.640 |
| 600 - 699 | $1.639 |
| 700 - 799 | $1.638 |
| 900 - 999 | $1.637 |
| 800 - 899 | $1.637 |
| 1000 | $1.636 |
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