Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20 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 90mm stroke with a 20mm fine-adjustable window — settable from 70 to 90mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke90 mm
- Adjust window20 mm
- Effective range70–90 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20
The AirTAC PBJ16X90-20 is a double-acting, single-rod pen-size mini cylinder with a 20mm adjustable stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 70-90mm. You set the exact length on the machine during commissioning without ordering new hardware. The extend end remains fixed.
Output force is identical to a standard PB cylinder of the same bore, delivering 100.5N push and 90.7N pull at 0.5MPa. The SUS304 stainless rod and barrel provide a slim profile for tight jigs, and a fixed TPU bumper cushions both ends. The M5x0.8 air port and M10x1.0 rod-end thread match standard 16mm bore dimensions.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 90 mm |
| Adjustable window | 20 mm (70–90 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 PBJ16X90-20
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×90 | 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 PBJ16X90-20 Is Used
Changeover Fixtures
Dial in the exact 70-90mm retract position during product changeovers without machining new stop spacers.
Trial Stops
Fine-tune the end-of-stroke position on test rigs to find the optimal insertion depth before locking the nut.
Variable-Depth Press
Adjust the retract distance on light-duty assembly presses to accommodate varying part heights on the fly.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20 the Right Cylinder?
For sizing, plan a safe working load of about 60N, which is roughly 60% of the 100.5N theoretical push at 0.5MPa to account for seal friction. If you need less force, a 12mm bore provides 56.5N push; if you need more, there is no larger PBJ bore, so consider an external guide. For vertical lifts, expect to raise about 5.1kg safely with a 2:1 margin.
Remember that only the retract position is tunable; the extend end is fixed. Always re-tighten the lock nut after setting the M5x0.8 adjuster screw to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 90mm nominal stroke, 20mm window, no magnet, and mounting choice.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 70–90 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 PBJ16X90-20 FAQ
The effective stroke range is 70-90mm. At 0.5MPa, push force is 100.5N and pull is 90.7N. At the maximum 0.7MPa operating pressure, push is 140.7N and pull is 126.9N.
A rear M5x0.8 adjuster screw shortens the retract end by up to 20mm. The extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. The cylinder does not hold position on air loss.
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Related AirTAC PBJ Pen-Size Cylinders
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