Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S 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 50mm fine-adjustable window — settable from 25 to 75mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke75 mm
- Adjust window50 mm
- Effective range25–75 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S
The AirTAC PBJ16X75-50S is a double-acting, single-rod pen-size mini cylinder with a 50mm adjustable window. A rear screw and lock nut shorten the retract end, giving an effective stroke range of 25-75mm. You can tune the length on the machine without buying new hardware. The extend end remains fixed.
Force is identical to a standard PB cylinder of this bore, delivering 100.5N push and 90.7N pull at 0.5MPa. The slim SUS304 stainless body uses an M5x0.8 port and an M10x1.0 rod-end thread. A fixed TPU bumper cushions both ends. Because the rod is only Ø5mm, add an external guide for off-axis loads over long strokes.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 50 mm (25–75 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 PBJ16X75-50S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -50 | 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 PBJ16X75-50S Is Used
Changeover Fixtures
Quickly tune the 25-75mm retract length on the machine when swapping product families, avoiding hardware changes.
Trial Stops
Dial in the exact back position during prototyping, then lock the nut for consistent repeatable results.
Variable-Depth Insert
Set precise press-in depths for different components using the rear adjuster without needing multiple cylinders.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50S the Right Cylinder?
For sizing, the 16mm bore provides 100.5N push at 0.5MPa. Stepping down to a 12mm bore yields 56.5N, while moving up is necessary for heavier demands. Plan for a safe working load of about 60N, which accounts for seal friction at 0.5MPa. This translates to lifting roughly 5.1kg vertically with a 2:1 safety margin.
Remember that only the retract position is settable; the extend end is fixed. Always re-tighten the lock nut after setting the rear M5x0.8 adjuster screw to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 75mm nominal stroke, 50mm window, S magnet, and mounting.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 25–75 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 PBJ16X75-50S FAQ
The effective stroke range is 25-75mm. At 0.5MPa, push force is 100.5N and pull is 90.7N. At the 0.7MPa maximum, push is 140.7N and pull is 126.9N. Adjusting the stroke does not alter these forces.
The rear screw shortens the retract end while the extend end stays fixed. Re-tighten the lock nut after setting to prevent vibration drift. The S suffix means a built-in piston magnet works with AirTAC reed or electronic switches.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC PBJ Pen-Size Cylinders
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