Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 is a double-acting pen-size mini cylinder with a rear adjuster screw that shortens the retract end of the stroke. On a Ø16mm bore it gives a nominal 75mm stroke with a 20mm fine-adjustable window — settable from 55 to 75mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke75 mm
- Adjust window20 mm
- Effective range55–75 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20
The AirTAC PBJ16X75-20 is a double-acting, single-rod pen-size mini cylinder with a 20mm adjustable stroke window. A rear adjuster screw shortens the retract end, giving an effective stroke range of 55-75mm. The extend end remains fixed. Force is identical to a standard PB body, delivering 100.5N push at 0.5MPa. The M5x0.8 air port and Ø5mm rod keep the body slim.
The SUS304 stainless barrel and fixed TPU bumper suit tight jigs and light end-of-arm tooling. The rear M5x0.8 adjuster lets you tune the retract length during commissioning. Plan for a safe working load of about 60N, which is roughly 60% of the 0.5MPa push rating. For vertical lifts, expect to raise about 5.1kg with a 2:1 safety margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 20 mm (55–75 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 |
The adjuster shortens only the retract end; the extend end is fixed. Force is unchanged from the standard PB double-acting cylinder. Confirm the set position against the product label before installation.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 N |
Adjusting the stroke does not change output force — these are the same values as the standard PB double-acting cylinder of the same bore. Size with a friction margin.
Model Code: Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -20 | 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).
Where the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 Is Used
Changeover Fixtures
Dial in the exact retract distance when swapping product families on a shared jig, using the rear screw to hit 55-75mm without machining new stops.
Trial Stops
Fine-tune the end position during prototype runs, locking the nut once the optimal 55-75mm travel is found for the test rig.
Variable-Depth Insert
Set precise downward insertion depths for press-fit tasks, adjusting the retract end to accommodate different part heights on the fly.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 the Right Cylinder?
This 16mm bore yields 100.5N push at 0.5MPa. If you need less force, the 12mm bore gives 56.5N push; if you need more, consider a larger standard body. The rear screw shortens the retract end only, so verify your layout has rear clearance. Re-tighten the lock nut after setting to prevent vibration drift. Confirm ordering essentials: bore, stroke, window, magnet S, and mount.
The thin Ø5mm rod handles coaxial thrust well. Over long strokes or off-axis loads, add an external guide or linear bearing to prevent side-load damage. A plain body does not hold position on air loss, so fit an external stop for fail-safe load holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 55–75 mm
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Access to the rear adjuster screw
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.7 MPa operating pressure.
- check Set the adjuster, then re-lock the check nut.
- check The adjuster shortens the retract end only.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20 FAQ
The effective stroke range is 55-75mm. At 0.5MPa, push is 100.5N and pull is 90.7N. At the 0.7MPa maximum, push is 140.7N and pull is 126.9N. The air port is M5x0.8 and the rod-end thread is M10x1.0.
A rear M5x0.8 adjuster screw shortens the retract end only; the extend end is fixed. You set the travel from 55 to 75mm on the machine, then re-tighten the lock nut to prevent vibration drift. The fixed TPU bumper decelerates the last few mm, but at high speeds with real mass, meter-out the exhaust or add an external shock absorber.
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Related AirTAC PBJ Pen-Size Cylinders
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