Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20 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 80mm stroke with a 20mm fine-adjustable window — settable from 60 to 80mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke80 mm
- Adjust window20 mm
- Effective range60–80 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20
The AirTAC PBJ16X80-20 is a double-acting, single-rod pen-size mini cylinder with a 20mm adjustable window. A rear screw and lock nut shorten the retract end, giving an effective stroke range of 60-80mm. The extend end remains fixed. Output force matches a standard PB cylinder of this bore, delivering 100.5N push at 0.5MPa.
The Ø5mm rod and barrel are SUS304 stainless, fitting tight jigs and light end-of-arm tooling. The M5x0.8 port and fixed TPU bumper are standard. Plan for a safe working load of about 60N, which is roughly 60% of the 0.5MPa theoretical push figure, ensuring smooth travel despite seal friction.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 20 mm (60–80 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 |
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 PBJ16X80-20
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | 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 PBJ16X80-20 Is Used
Changeover Fixtures
Dial in the exact retract position from 60 to 80mm when swapping product families on a shared jig, avoiding hardware changes.
Trial Insertion Stops
Set variable insertion depths during process development, locking the nut once the optimal 60-80mm travel is found.
Variable Depth Press
Adjust the back position for different press depths on small components, utilizing the full 100.5N push at 0.5MPa.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20 the Right Cylinder?
For sizing, a 12mm bore PB gives 56.5N push at 0.5MPa, while a 16mm bore provides 100.5N. This model fits loads needing that 100.5N push. Remember that only the back position is adjustable; the front extend stop is fixed. Always re-tighten the lock nut after setting the rear screw to prevent vibration drift.
Confirm your ordering essentials: 16mm bore, 80mm nominal stroke, 20mm window, no magnet, and your required mounting. If you need a fixed length, choose the PB series; for equal force both ways, select PBD.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 60–80 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 PBJ16X80-20 FAQ
The effective stroke range is 60-80mm. At 0.5MPa, push is 100.5N and pull is 90.7N. At the maximum 0.7MPa, push is 140.7N and pull is 126.9N. Adjusting the stroke does not change these force figures.
The rear screw shortens only the retract end of the stroke; the extend end is fixed. After setting your desired length within the 20mm window, you must re-tighten the lock nut to prevent vibration drift. The thread is M5x0.8.
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Standard models usually ship in 3-4 days.
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Related AirTAC PBJ Pen-Size Cylinders
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