
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-30S is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø16mm bore it gives a nominal 80mm stroke with a 30mm fine-adjustable window — settable from 50 to 80mm, so you set the end position without changing hardware.
The AirTAC PBJ16X80-30S is a double-acting, double-rod pen-size mini cylinder with a 30mm adjustable stroke window. A rear M5x0.8 adjuster screw shortens the retract end, giving an effective stroke range of 50-80mm. The extend end remains fixed.
The slim body uses a SUS304 stainless rod and barrel, fitting tight jigs and light end-of-arm tooling. A fixed TPU bumper cushions each end. The -S suffix adds a built-in piston magnet for position sensing.
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-30S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 30 mm (50–80 mm) |
| Adjuster thread | M5×0.8 |
| Port size | M5×0.8 |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Elastic bumper (both ends) |
| Max standard stroke | Up to 200 mm |
PBJ is a double-rod cylinder: the rear rod carries the stroke adjuster, which sets the stroke end within the adjustable window. Confirm the set position against the product label before installation.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 90.7 N | 90.7 N |
| 0.7 MPa (max) | 126.9 N | 126.9 N |
The rear rod passes through the rear cover, so both piston faces lose rod area: push is shown at the annular-area value (conservative), lower than a single-rod PB push of the same bore. Size with a friction margin.
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | Nominal stroke length in mm. |
| -30 | Adjustable-stroke window in mm (10/20/30/40/50/75/100). |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
Fixed body — no separate back-cover code. Mounting accessories: LB, FA. Related PB-family variants: PB (fixed stroke), PBD (double rod), PBR (front-mount).
Dial in the retract position from 50 to 80mm during product family changeovers without machining new stop collars or ordering alternate cylinders.
Gradually tune the back position for variable-depth press fits, protecting delicate components during first-off prototype assembly.
Stepping down to a 12mm bore drops push to 56.5N, while a larger bore exceeds this frame size. The air port is M5x0.8 and the rod-end thread is M10x1.0. Remember that only the retract position is settable; the extend end is fixed. Always re-tighten the lock nut after tuning the stroke to prevent vibration drift.
When ordering, confirm the bore, 80mm nominal stroke, 30mm window, S magnet, and any LB or FA mounting hardware. The Ø5mm rod handles coaxial thrust; add an external linear guide for off-axis loads. Note that a plain cylinder drifts on air loss, so use an external stop for fail-safe holding.
Quick checklist
The effective stroke range is 50-80mm.
The rear M5x0.8 screw shortens the retract end only; the extend end is fixed. Re-tighten the lock nut after setting to prevent vibration drift. The built-in magnet works with AirTAC reed or electronic switches.
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