The Spring Manufacturers Institute has established a list of specifications necessary for the manufacturing of compression springs. Banner Spring reproduces it here as a convenience for our customers. We will also make the measurements ourselves from an existing spring, or design a spring for you.

Coil Counting Guide

Mandatory Specifications
(Fill in only those require, indicate appropriate unit of measure)

  1. Outside Diameter
    a. in./mm maximum, or
    b. in./mm ± in./mm
  2. Inside Diameter
    a. in./mm minimum, or
    b. in./mm ± in./mm c. work over in/mm
  3. Load lb./N ± lb./N @ in./mm
    Load lb./N ± lb./N @ in./mm
    Rate lb./N ± lb./N between lengths of in./mm and in./mm
  4. Max. solid height in./mm
  5. Direction of wind (L,R or optional)
  6. Type of ends(see illustration)
Advisory Data

  1. Free Length
    a. in./mm max. in/mm min., or
    b. in./mm ± in./mm
  2. Wire Diameter in./mm
  3. Mean coil Diameter in./mm
  4. Number of active coils
  5. Total number of coils
Special Information

  1. Type of material
  2. Finish
  3. Squareness (free) °
  4. Frequency of compression, cycles/sec., and working range, in./mm to in./mm of lenght.
  5. Operating temperature ° F/ ° C
  6. End use of application
  7. Other
  8. Quantity
  9. Delivery required by (date)
Customer Information
Name
Title
Company
Address
City
State Country
Zip/Postal code
Telephone
Fax
e-mail

This form may be copied for inquiries and ordering. Submit this form on-line or Fax to (860)738-1632
 
Banner Spring Corporation
PO Box 657
Winsted, Connecticut, USA 06098
Phone: (860) 379-3725
Fax: (860) 738-1632
E-mail: info@bannerspring.com