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Specifications

 

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Physical Dimension

mm cm

Load

N kg gm

 
 

LEM180DF 04 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.06 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Zinc Plate and Bake per ASTM B633
Material
Music Wire
Total Coils
40.000
Published Stock Code
LEM180DF04M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
2.52
Rate (kg/cm)
2.57
Rate (lb/in)
14.39
Rate (gm/mm)
257.00
Weight per Item (lb)
0.06
Material Specification
ASTM A228
Free Length (cm)
8.720
Free Length (inch)
3.433
Free Length (mm)
87.200
Free Length - Build Spec (in)
3.43
Free Length Tolerance (cm)
0.18
Free Length Tolerance (in)
0.07
Free Length Tolerance (mm)
1.75
Free Length Tolerance - Build Spec (in)
0.07
Inside Diameter (cm)
0.84
Inside Diameter (in)
0.33
Inside Diameter (mm)
8.38
Outside Diameter (cm)
1.199
Outside Diameter (in)
0.47
Outside Diameter (mm)
11.99
Outside Diameter - Build Spec (in)
0.47
Outside Diameter Tolerance (cm)
0.03
Outside Diameter Tolerance (in)
0.01
Outside Diameter Tolerance (mm)
0.30
Outside Diameter Tolerance - Build Spec (in)
0.01
Rate (gm/cm)
2570.00
Rate (kg/mm)
0.26
Rate (N/cm)
25.20
Rate - Build Spec (lb/in)
14.39
Rate Tolerance (gm/cm)
257.00
Rate Tolerance (gm/mm)
25.70
Rate Tolerance (kg/cm)
0.26
Rate Tolerance (kg/mm)
0.03
Rate Tolerance (lb/in)
1.44
Rate Tolerance (N/cm)
2.52
Rate Tolerance (N/mm)
0.25
Rate Tolerance - Build Spec (lb/in)
1.44
Total Coils - Build Spec
40.00
Wire Diameter (cm)
0.18
Wire Diameter (inch)
0.07
Wire Diameter (mm)
1.80
Wire Diameter - Build Spec (in)
0.07
Material Short Description
MW
Product Series
Standard Extension Series (metric)
Inside Diameter Tolerance (cm)
Reference
Inside Diameter Tolerance (in)
Reference
Inside Diameter Tolerance (mm)
Reference
Initial Tension - Build Spec. (lb)
4.82
Initial Tension (lb)
4.82
Initial Tension (N)
21.43
Initial Tension (kg)
2.19
Initial Tension (gm)
2185.40
Initial Tension Tolerance - Build Spec. (lb)
0.96
Initial Tension Tolerance (lb)
0.96
Initial Tension Tolerance (N)
4.29
Initial Tension Tolerance (kg)
0.44
Initial Tension Tolerance (gm)
437.27
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
31.70
Max Load (lb)
31.70
Max Load (kg)
14.38
Max Load (gm)
14379.10
Max Extended Length - Build Spec. (in)
5.31
Max Extended Length (in)
5.31
Max Extended Length (mm)
134.80
Max Extended Length (cm)
13.48
Body Length - Build Spec. (in)
2.91
Body Length (in)
2.91
Body Length (mm)
73.94
Body Length (cm)
7.39
Loop Inside Diameter - Build Spec. (in)
0.33
Loop Inside Diameter (in)
0.33
Loop Inside Diameter (mm)
8.38
Loop Inside Diameter (cm)
0.84
Loop Position
Inline
Loop Opening - Build Spec. (in)
0.07
Loop Opening (in)
0.07
Loop Opening (mm)
1.80
Loop Opening (cm)
0.18
Max Load (N)
141.01
Inside Diameter - Build Spec (in)
0.33
Model Code
LEM

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM180DF 04 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 11.99-mm outside diameter (0.472 inch) with 8.38-mm loop inside diameter (0.33 inch) and extends from a free length of 87.2 mm (3.433 inch) to a maximum extended length of 134.8 mm (5.307 inch). Made from Music Wire with a 1.8-mm wire diameter (0.071 inch), the spring delivers a spring rate of 2.52 N/mm (14.39 lb/inch) through its 40 total coils with an initial tension of 21.432 N (4.818 lb) for predictable extension behavior. The spring supports a maximum load of 141.009 N (31.7 lb) at full extension with a body length of 73.94 mm (2.911 inch). The spring features Inline loop position and Zinc Plate and Bake per ASTM B633 finish for optimal performance.

Extension Springs: Standard Series

The 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:

  • Medical devices
  • Firearms
  • Pharmaceutical delivery devices
  • Lighting and electrical control
  • Petro-chemical processes
  • Communication devices
  • Aerospace
  • Testing and measurement equipment
  • Marine applications
  • Automotive
  • Locks and security devices
  • Precision Instruments
  • Hardware

...and many more applications

273861
Product Extension OD 0.472 in, Length 3.433 in, Music Wire
Product Extension OD 11.99 mm, Length 87.2 mm, Music Wire
Part Number LEM180DF 04 M
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.472
Outside Diameter (cm) 1.199
Outside Diameter (mm) 11.99
Wire Diameter (inch) 0.071
Wire Diameter (cm) 0.18
Wire Diameter (mm) 1.8
Max Load (gm) 14379.1
Max Load (lb) 31.7
Max Load (kg) 14.3791
Max Load (N) 141.009
Rate (gm/cm) 2570
Rate (gm/mm) 257
Rate (kg/cm) 2.57
Rate (kg/mm) 0.257
Rate (lb/in) 14.39
Rate (N/cm) 25.2
Rate (N/mm) 2.52
Max Extended Length (cm) 13.48
Max Extended Length (in) 5.307
Max Extended Length (mm) 134.8
Initial Tension (gm) 2185.4
Initial Tension (kg) 2.1854
Initial Tension (lb) 4.818
Initial Tension (N) 21.432
Free Length (cm) 8.72
Free Length (inch) 3.433
Free Length (mm) 87.2
Material Music Wire
Loop Inside Diameter (cm) 0.838
Loop Inside Diameter (in) 0.33
Loop Inside Diameter (mm) 8.38
Ends Standard Loops
Loop Position Inline
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.071 0.472 0.012 3.433 0.069 40 4.818 0.964 14.39 1.439 5.307 31.7 0.071 2.911 Inline 0.472 0.012 3.433 0.069 40 4.818 0.964 14.39 1.439 5.307 31.7
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Quantity Price
1 - 19 $11.290
20 - 49 $6.950
50 - 99 $3.840
100 - 199 $2.450
200 - 299 $2.173
300 - 399 $2.051
400 - 499 $1.964
500 - 599 $1.893
600 - 699 $1.838
700 - 799 $1.789
800 - 899 $1.749
900 - 999 $1.712
1000 $1.680

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