Applications
Where this spring style fits
Review best-fit uses, assembly constraints and situations where another spring style may be a better choice.
View application guidance →Flat Springs & Stampings
Custom Cantilever Flat Springs
Flat spring elements fixed at one end, specified by active length, support details and force at the moving contact.
- Specification
- Drawing and working requirement
- Dimensions
- Confirmed for the assembly
- Performance
- Specified at working positions
- Quotation
- Submit dimensions and quantity
About Custom Cantilever Flat Springs
A cantilever flat spring bends from a fixed region while its free region provides a return, contact or retaining force. The mounting boundary and load point are essential parts of the design. Show which length is actually free to bend, rather than providing overall strip length alone. Thickness, width, material condition and formed details must then be reviewed against the required force and movement.
Key Design Characteristics
- Identify the clamped region and the first free bending point.
- Measure active length to the actual load-contact position.
- Show bends, holes and transitions near the fixed region.
Choosing Between Related Designs
This page focuses on the fixed-end bending arrangement. The broader cantilever-and-formed-flat page also covers formed details; the contact-leaf page adds electrical-interface requirements. Choose the page according to the main function.
Specification and Inspection Review
Use the specified support and load point in force testing. Identify edge condition, bend and mounting tolerances, and any required permanent-set or repeated-deflection acceptance criterion.
Product Specification
What to Define for This Spring
Use these product-specific inputs to describe your requirement. Final dimensions, material and performance are confirmed against the drawing and operating conditions.
| Specification item | What to define |
|---|---|
| Active geometry | Strip thickness, width and free bending length. |
| Fixed boundary | Clamp, fastener or capture arrangement and support dimensions. |
| Load contact | Contact location, shape and movement direction. |
| Force-deflection points | Required force at installed and maximum displacement. |
| Duty and material | Material condition, repeated movement and exposure requirements. |
Next Design Decisions
Next Steps for Your Spring Design
Once the spring style is selected, confirm how it works in the assembly, which material suits the environment, how it will be manufactured and which dimensions and performance points should be controlled on the drawing.
Materials
Choose the material for the environment
Review strip grade and condition for the active bending geometry, environment and required movement.
Compare spring materials →Manufacturing
Plan prototype and production
Review forming, heat treatment, secondary operations, inspection and the path from first samples to repeat production.
View manufacturing capabilities →Engineering Data
Use the engineering guide for design support
Use the engineering library to review materials, sizing considerations and applicable standards for the custom design.
Open Spring Engineering Guide →Material Direction
Common Material Families to Review
The links below are selection guides, not a claim that every grade is suitable for every size or load.
Compare Designs
Related Spring Products
Use these alternatives when the available space, connection style, travel or force direction changes.
Flat Springs & Stampings
Cantilever & Formed Flat Springs
Flat-strip spring elements that flex from a fixed region to provide contact force, retention or return in thin assemblies where round-wire coils would take too much space.
Flat Springs & Stampings
Contact Leaf Springs
Formed leaf contacts specified by their fixed support, mating contact surface and force at installed deflection.
Flat Springs & Stampings
Spring Clips
Spring clip enquiries defined by the mating part, insertion movement, retention requirement and release method.
Product Questions
Cantilever Flat Springs FAQ
Is overall length the active spring length?
Not necessarily. The clamped or captured region does not bend in the same way as the free region. Define the active length from its support boundary.
Can the spring be tested without its mounting details?
A useful force test needs the agreed fixed support and load point. Include those dimensions or provide a representative fixture drawing.
RFQ
Send the Working Requirement
A drawing is ideal. If you do not have one yet, provide the dimensions, load or torque, travel, environment and expected quantity that matter in the assembly.
CustomSprings Engineering Catalog
Request This Spring
Send your dimensions, quantity and drawing for engineering review.