How DJ2T's Multi-Stage Piston Doubles Force Without a Bigger Cylinder

When a machine designer needs more force but has no room for a bigger bore, HINAKA's DJ2T multi-stage pneumatic cylinder is often the answer. Here is how the patented design works, and where it fits.

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I. The Space Problem With Bigger Bores

The straightforward way to get more force from a pneumatic cylinder is a bigger bore. But a bigger bore means a bigger cylinder body — and on a compact machine, tool magazine or automation cell, that space often does not exist.

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II. Same-Diameter Pistons, Linked in Series

DJ2T's patented design links two or more same-diameter pistons on a single, one-piece piston rod, all pressurised together. Each piston contributes its own force to the same output, so the total force multiplies without the bore growing at all.

• One-piece piston rod: unlike a sectioned multi-stage design, the rod is not built from linked segments — this is lower friction and part of what the patent covers.
• Bore range ø80 to ø160, available in multiple section counts for different force multiples.
• Operating pressure 0.098 to 0.97 MPa, proof pressure 1.471 MPa, speed 50 to 1,000 mm/s.

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III. Where It Is Used

DJ2T suits any application where the force requirement has outgrown a single-stage cylinder but the available space has not: compact automation cells, tool-magazine mechanisms, and machine sections where a larger single-bore cylinder simply will not fit.

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IV. Selecting a DJ2T

Tell us the force you need and the space available via Contact Us — we will confirm the bore size and number of sections required.

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