Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50 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 PBJ16X75-50
The AirTAC PBJ16X75-50 is a double-acting, single-rod pen-size mini cylinder featuring a 50 mm adjustable stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 25-75 mm. This on-machine tuning lets you dial in the exact return position during commissioning without swapping hardware. The extend end remains fixed.
Force output is identical to a standard PB cylinder of the same bore, delivering 100.5 N push at 0.5 MPa. The Ø5 mm piston rod and barrel are SUS304 stainless, and a fixed TPU bumper cushions each end. The air port is M5x0.8, and the rod-end thread is M10x1.0. Plan for a safe working load of about 60 N, which is roughly 60% of the 0.5 MPa theoretical force, to account for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50 |
|---|---|
| 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 PBJ16X75-50
| 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 PBJ16X75-50 Is Used
Changeover Fixtures
Dial in the retract length from 25 to 75 mm during product changeovers to hit different stop depths without machining new pins.
Trial Insertion Stops
Test variable insertion depths on delicate assemblies by turning the rear screw, then lock the nut for repeatable cycles.
Vertical Lift Jigs
Lifts about 5.1 kg vertically with a 2:1 safety margin at 0.5 MPa, ideal for lightweight end-of-arm tooling and compact pick-and-place.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-50 the Right Cylinder?
This 16 mm bore provides 100.5 N push at 0.5 MPa. If you need less force, the 12 mm bore offers 56.5 N push; if your fixture requires more thrust, note that this is the largest standard PBJ pen-size option. Remember that only the retract end is adjustable, so verify your extend length is acceptable before ordering.
After setting your 25-75 mm effective stroke, re-tighten the lock nut on the M5x0.8 adjuster thread to prevent vibration drift. Confirm your ordering essentials: 16 mm bore, 75 mm nominal stroke, 50 mm window, no magnet, and your preferred LB or FA mount.
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 PBJ16X75-50 FAQ
The effective stroke range is 25-75 mm. At 0.5 MPa it provides 100.5 N push and 90.7 N pull. At the maximum 0.7 MPa operating pressure, it provides 140.7 N push and 126.9 N pull.
A rear screw shortens the retract end while the extend end stays fixed. After setting the length, re-tighten the lock nut to prevent drift. A plain cylinder does not hold position on air loss; the piston drifts and the fixed TPU bumper only decelerates near the stroke end, so use an external rod lock for fail-safe holding.
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Related AirTAC PBJ Pen-Size Cylinders
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