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Specifications

 

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Imperial/Inches Metric
Physical Dimension

mm cm

Load

N kg gm

 
 

LEM120E 01 M

Cost
$0.00
$0.00
Price
$0.00
Weight
0.00 lb.
Direction of Wind
Factory Option
Ends
Standard Loops
Finish
Zinc Plate and Bake per ASTM B633
Material
Music Wire
Total Coils
7.000
Published Stock Code
LEM120E01M
Product Type
Extension Spring
Product Category
Stock
Revision
NR
Rate (N/mm)
2.07
Rate (kg/cm)
2.11
Rate (lb/in)
11.84
Rate (gm/mm)
211.40
Weight per Item (lb)
0.01
Material Specification
ASTM A228
Free Length (cm)
3.000
Free Length (inch)
1.181
Free Length (mm)
30.000
Free Length - Build Spec (in)
1.18
Free Length Tolerance (cm)
0.09
Free Length Tolerance (in)
0.04
Free Length Tolerance (mm)
0.89
Free Length Tolerance - Build Spec (in)
0.04
Inside Diameter (cm)
1.01
Inside Diameter (in)
0.40
Inside Diameter (mm)
10.11
Outside Diameter (cm)
1.250
Outside Diameter (in)
0.49
Outside Diameter (mm)
12.50
Outside Diameter - Build Spec (in)
0.49
Outside Diameter Tolerance (cm)
0.03
Outside Diameter Tolerance (in)
0.01
Outside Diameter Tolerance (mm)
0.25
Outside Diameter Tolerance - Build Spec (in)
0.01
Rate (gm/cm)
2114.00
Rate (kg/mm)
0.21
Rate (N/cm)
20.74
Rate - Build Spec (lb/in)
11.84
Rate Tolerance (gm/cm)
211.40
Rate Tolerance (gm/mm)
21.14
Rate Tolerance (kg/cm)
0.21
Rate Tolerance (kg/mm)
0.02
Rate Tolerance (lb/in)
1.18
Rate Tolerance (N/cm)
2.07
Rate Tolerance (N/mm)
0.21
Rate Tolerance - Build Spec (lb/in)
1.18
Total Coils - Build Spec
7.02
Wire Diameter (cm)
0.12
Wire Diameter (inch)
0.05
Wire Diameter (mm)
1.19
Wire Diameter - Build Spec (in)
0.05
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)
0.88
Initial Tension (lb)
0.88
Initial Tension (N)
3.91
Initial Tension (kg)
0.40
Initial Tension (gm)
399.20
Initial Tension Tolerance - Build Spec. (lb)
0.18
Initial Tension Tolerance (lb)
0.18
Initial Tension Tolerance (N)
0.78
Initial Tension Tolerance (kg)
0.08
Initial Tension Tolerance (gm)
79.83
Inside Diameter Tolerance - Build Spec (in)
REF
Max Load - Build Spec. (lb)
8.82
Max Load (lb)
8.82
Max Load (kg)
4.00
Max Load (gm)
4000.80
Max Extended Length - Build Spec. (in)
1.85
Max Extended Length (in)
1.85
Max Extended Length (mm)
47.02
Max Extended Length (cm)
4.70
Body Length - Build Spec. (in)
0.39
Body Length (in)
0.39
Body Length (mm)
9.78
Body Length (cm)
0.98
Loop Inside Diameter - Build Spec. (in)
0.40
Loop Inside Diameter (in)
0.40
Loop Inside Diameter (mm)
10.11
Loop Inside Diameter (cm)
1.01
Loop Position
Random
Loop Opening - Build Spec. (in)
0.05
Loop Opening (in)
0.05
Loop Opening (mm)
1.19
Loop Opening (cm)
0.12
Max Load (N)
39.23
Inside Diameter - Build Spec (in)
0.40
Model Code
LEM

Standard Extension Series (metric)

Selection to Match Your Needs

Lee Spring LEM120E 01 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 12.5-mm outside diameter (0.492 inch) with 10.11-mm loop inside diameter (0.398 inch) and extends from a free length of 30 mm (1.181 inch) to a maximum extended length of 47.02 mm (1.851 inch). Made from Music Wire with a 1.19-mm wire diameter (0.047 inch), the spring delivers a spring rate of 2.074 N/mm (11.84 lb/inch) through its 7 total coils with an initial tension of 3.914 N (0.88 lb) for predictable extension behavior. The spring supports a maximum load of 39.233 N (8.82 lb) at full extension with a body length of 9.78 mm (0.385 inch). The spring features Random 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

272261
Product Extension OD 0.492 in, Length 1.181 in, Music Wire
Product Extension OD 12.5 mm, Length 30 mm, Music Wire
Part Number LEM120E 01 M
Series Standard Extension Series (metric)
Outside Diameter (inch) 0.492
Outside Diameter (cm) 1.25
Outside Diameter (mm) 12.5
Wire Diameter (inch) 0.047
Wire Diameter (cm) 0.119
Wire Diameter (mm) 1.19
Max Load (gm) 4000.8
Max Load (lb) 8.82
Max Load (kg) 4.0008
Max Load (N) 39.233
Rate (gm/cm) 2114
Rate (gm/mm) 211.4
Rate (kg/cm) 2.114
Rate (kg/mm) 0.2114
Rate (lb/in) 11.84
Rate (N/cm) 20.74
Rate (N/mm) 2.074
Max Extended Length (cm) 4.702
Max Extended Length (in) 1.851
Max Extended Length (mm) 47.02
Initial Tension (gm) 399.2
Initial Tension (kg) 0.3992
Initial Tension (lb) 0.88
Initial Tension (N) 3.914
Free Length (cm) 3
Free Length (inch) 1.181
Free Length (mm) 30
Material Music Wire
Loop Inside Diameter (cm) 1.011
Loop Inside Diameter (in) 0.398
Loop Inside Diameter (mm) 10.11
Ends Standard Loops
Loop Position Random
Direction of Wind Factory Option
Finish Zinc Plate and Bake per ASTM B633
0.047 0.492 0.01 1.181 0.035 7 0.88 0.176 11.84 1.184 1.851 8.82 0.047 0.385 Random 0.492 0.01 1.181 0.035 7 0.88 0.176 11.84 1.184 1.851 8.82
Default View
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Quantity Price
1 - 19 $8.870
20 - 49 $5.370
50 - 99 $2.840
100 - 199 $1.770
200 - 299 $1.495
300 - 399 $1.415
400 - 499 $1.338
500 - 599 $1.271
600 - 699 $1.213
700 - 799 $1.161
800 - 899 $1.123
900 - 999 $1.088
1000 $1.062

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