Specifications for Extension Springs
  1. Notice that this form is for Metric Units only if you would like English Units instead please click Here.

  2. Do not attempt to specify every possible dimension of the spring. This will only increase the cost unnecessarily.

    Depending upon the loading characteristics, some of the dimensions may have to be left open to allow for manufacturing compensation.
  3. Based on our experience, the best possible spring design can be obtained by the following steps.

    A) Fill in the data below and forward it to us.

    B) We will then calculate for you the best possible spring design.

    C) We will recommend to you the data and specifications your drawing should contamm

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Contact Information:
Name:*
E-Mail:*
Company:*
Phone:*
Fax:
 
Type of Assistance:
Design:
Quantity to Quote:
If Quantity to Quote Please indicate EAU:
 
Fill in Applicable Data Only:
Maximum possible outside diameter mm
Maximum extended length in operation mm
Maximum extended length without set mm
 
Load (P1) N +/- N at Extended Length (L1) mm
Load (P2) N +/- N at Extended Length (L2) mm
 

Rate (R) N/mm +/- N/mm when tested between the length of
mm and mm
 
Direction of coiling:

Right Hand  
Left Hand
Optional
 
Ends:
Requirements for Hook Length (Le) minimum or (Le) maximum  
Requirements for Hook Gap (m) minimum or maximum  
 
Position of loops to each other:  
 
Types of ends preferred (machine hook, twist loop, etc.):  
 
Loop of one end to fit over diameter stud
Loop of other end to fit over diameter stud
 

Extension Spring Diagram

Extension Spring Diagram
 
Operational Requirements:
Spring is always statically loaded to Extended Length (L) mm
 
Spring operates dynamically between the lengths of (L1) and
Extended Length (L2) . A total of cycles are expected before failure
 
Speed of cycles Cycles Per Minute
 
Maximum temperature during operation  °C
 
Operating environment of spring  
 
Special load loss requirement  
 
Special Requirements:
Finish:  
 
Other:  
 
Suggested Design Data:
Wire diameter (d)  
 
Number of active coils (Na)  
 
Outside diameter (OD)  
 
Free length inside to inside of hooks (Lf)  
 
Material:  
 
Monticello Spring Corporation
P.O. Box 705 / 3137 South Freeman Road
Monticello, IN 47960
Telephone: (574) 583-8090 / Fax: (574) 583-9299