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ISO/TS 16949 & 14001Certified

Stainless Steel Compression Spring for the Automotive Industry

Stainless Steel Pollution Control Valve Spring
Stainless Steel Pollution Control Valve Spring

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This Stainless Steel type 302 spring is used in a pollution control system in the automotive industry.  Rather than calibrate each valve the customer requires a very tight tolerance for the spring.  Starting with the best available raw material, Maverick coils the springs to a free length variation of less than +/- 0.004”, and a diameter variation of less than +/- 0.002”.  End grinding is accomplished using CBN grinding wheels.  CBN wheels wear very slowly and require no dressing, leading to infrequent and minimal adjustments to the grinding process.  After grinding all springs are 100% sorted for spring rate and load at installed length.  At all points in the process a strict Kanban system is maintained to keep tight control of quality. 




Specifications

Product Name   Stainless Steel Compression Spring for the Automotive Industry
Wire   0.025" Stainless Steel Type 302 - Nickel Coated
Outside Diameter, body
  0.300
Total Coils   ~ 7.5
Free Length
  Not specified, but variation must be held to less than +/- 0.004"
Manufacturing Processes
  Coiling, low temperature stress relief, end grinding, 100% sort for rate and load at installed length
Production Speed   ~ 2000/hr
Low Temperature Stress Relief
  550 degrees F, 20 minutes, inline conveyor oven
Testing
  100% sort for spring rate and load at installed length
Packaging
  Bulk pack in recyclable containers
End Use
  Pollution control system
Shipped to   Canada, US, Mexico

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Maverick Spring Makers Limited | Compression Extension Torsion