Bernardo Foot-Operated Shrinker and Stretcher SS 20 F
The Bernardo Foot-Operated Shrinker and Stretcher SS 20 F is a professional device for shrinking and stretching sheet metal, ideal for bodywork, restoration, and artisanal work. It allows working with steel up to 1.5 mm and aluminum up to 1.8 mm, with a throat depth of 245 mm, enabling the processing of large and complex panels. Thanks to the special jaws, work is performed almost wrinkle-free, ensuring smooth and precise surfaces. The foot operation leaves hands free for proper workpiece positioning, increasing safety and efficiency. It comes with one shrinking and one stretching tool, both easily interchangeable. With a robust structure, a weight of 55 kg, and compact dimensions, it is perfect for intensive workshop use.
Key features:
Capacity: steel up to 1.5 mm and aluminum up to 1.8 mm
245 mm deep throat for universal applications
Foot-operated system for hands-free work
Special jaws for nearly wrinkle-free results
Quick change of shrinking and stretching tools
Robust structure and 55 kg weight, ideal for professional use
Perfect for body shops, restoration, and artisanal work
Technical Specifications
| Specification |
Value |
| Brand |
Bernardo |
| Model |
SS 20 F |
| Steel capacity (400 N/mm²) |
1.5 mm |
| Aluminum capacity |
1.8 mm |
| Throat |
245 mm |
| Machine dimensions (L x W x H) |
600 x 700 x 1370 mm |
| Weight |
approx. 55 kg |
Standard equipment
1 Shrinker unit
1 Stretcher unit
Foot pedal
Logistics
Bernardo shipping: 5–9 business days (7 days to the South). Original spare parts available with 3–5 business days shipping. Customer support in Italian available.
Frequently Asked Questions
What does a shrinker do and what does a stretcher do?
A shrinker compresses the metal fiber at the edge, shortening it and creating a concave curve. A stretcher elongates the fiber by expanding it, creating a convex curve. Alternating between the two functions allows complex shapes to be achieved on thin sheet metal without wrinkles or tears. An essential tool for bodyworkers, boat builders, and vehicle restorers.
What sheet metal thicknesses can the Bernardo Foot-Operated Shrinker and Stretcher work?
Bernardo shrinkers/stretchers typically work steel up to 1.2–2.0 mm and aluminum up to 1.5–2.5 mm, depending on the model. Check the specific limits in the technical table for the Bernardo Foot-Operated Shrinker and Stretcher. Exceeding the limits causes damage to tools and irregular deformations on the workpiece.
What is the difference between lever, foot-operated, and motorized versions?
The lever version (Pro) is manual: the operator uses both hands to operate the lever, ideal for occasional work. The foot-operated version (FD/F) operates the machine with the foot, freeing both hands to hold and guide the workpiece – more convenient for repetitive tasks. The motorized or electric version automates the complete cycle for series production.
Do the jaws wear out? Are spare parts available?
Yes. The jaws of shrinkers/stretchers wear out after prolonged intensive use. Original Bernardo replacement jaws are available with 3–5 business days shipping. Replacement does not require special tools.
Does it also work on copper and brass?
Yes. Copper and brass are more ductile materials than steel: the actual capacity is higher compared to mild steel. For specific alloys, verify thickness limits with Krollit. Customer support in Italian available.
