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Expertise and quality parts for all your drying needs since 1970.

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Pressure Frames

We manufacture pressure frames in two designs.

One with a fully welded frame and one with a central beam and adjustable crossbars that press down on selected areas of the lumber packages. To apply pressure, we offer both pneumatic and electric solutions.

The electric version requires an advanced control system to continuously adjust pressure as the wood shrinks. We always recommend placing both the pneumatic cylinders and the electric gear system outside the kiln environment.

We can supply the complete pneumatic equipment for this solution, as well as most components for the electric gear system, including small frequency converters needed to regulate the desired pressing force.

We also offer an indicator system to confirm that pressure frames are lifted. This is crucial in channel/walking kilns to prevent movement of lumber when frames are not raised. Additionally, we provide a locking mechanism to secure a pressure frame in the lifted position, allowing safe replacement or repair of leaking pneumatic cylinders.

Pneumatic systems eventually develop leaks. We prefer to manufacture pressure frames in aluminium, as it performs well inside kilns and offers slightly more flexible welds than stainless steel. Weight-wise, aluminium is roughly equivalent due to its lower strength and density compared to stainless steel. Depending on material prices, we can easily choose the most cost-effective option. We also supply all necessary accessories for pressure frames, such as pressure frame fabric, cylinders, extension rods, and compressors.

See related pages for more on accessories and pneumatic cylinders.

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We specialize in products for wood dryers. Our experience with dryers dates back to the early 1970s, when our parent company, Nibro AB, started its business by assembling wood dryers.

Contact

Svensk Sågverksteknik AB
Montagevägen 6
SE-736 91 Kungsör
Sweden

Phone: +46 227-292 55
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