Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S 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 40mm fine-adjustable window — settable from 50 to 90mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke90 mm
- Adjust window40 mm
- Effective range50–90 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S
The AirTAC PBJ16X90-40S is a double-acting, single-rod pen-size mini cylinder with a 40mm adjustable stroke window. A rear M5x0.8 adjuster screw shortens the retract end, giving an effective stroke range of 50mm to 90mm. The extend end remains fixed. Output force stays the same as a standard PB bore 16, giving 100.5N push and 90.7N pull at 0.5MPa.
The Ø16mm body uses an M5x0.8 air port, an M10x1.0 rod-end thread, and a Ø5mm stainless steel rod. A fixed TPU bumper cushions each end. The built-in magnet works with reed or electronic switches. Good practice loads a cylinder to about 60% of its theoretical force, so plan for roughly 60N of real work at 0.5MPa, which lifts about 5.1kg vertically with a 2:1 margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 90 mm |
| Adjustable window | 40 mm (50–90 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 PBJ16X90-40S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×90 | Nominal stroke length in mm. |
| -40 | 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 PBJ16X90-40S Is Used
Changeover Fixtures
Dial in the retract from 90mm down to 50mm to switch between part families on the same jig without machining new stops.
Trial Insertion Stops
Fine-tune the penetration depth during R&D testing, locking the nut once the optimal 50-90mm travel is found.
Variable Depth Pressing
Set precise downward travel limits for light-duty pressing tasks, relying on the 140.7N peak push at 0.7MPa maximum pressure.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-40S the Right Cylinder?
This 16mm bore provides 100.5N push at 0.5MPa. Sizing either way: a 12mm bore gives 56.5N push, while this 16mm offers the necessary step up for firmer actuation. The rear screw limits the back position only; the extend end is fixed, so verify your layout accepts adjustment on the retract side. Always re-tighten the lock nut after setting your length to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 90mm nominal stroke, 40mm window, S magnet, and any LB or FA mount.
The Ø5mm rod is built for coaxial thrust. Over the 90mm stroke, avoid side loads by adding an external guide or linear bearing. The fixed TPU bumper only decelerates the last few millimeters; at high speeds with real tooling mass, meter-out the exhaust or add an external shock absorber. A plain cylinder 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 50–90 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 PBJ16X90-40S FAQ
The effective stroke range is 50mm to 90mm. Force is identical to a standard PB 16mm bore: 100.5N push and 90.7N pull at 0.5MPa, or 140.7N push and 126.9N pull at the 0.7MPa maximum pressure.
The M5x0.8 rear screw shortens the retract end of the stroke up to 40mm, while the extend end remains fixed. You must re-tighten the lock nut after setting your desired length to prevent vibration drift. The included S magnet works with reed or electronic switches.
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Related AirTAC PBJ Pen-Size Cylinders
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