Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40 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 40mm fine-adjustable window — settable from 35 to 75mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke75 mm
- Adjust window40 mm
- Effective range35–75 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40
The AirTAC PBJ16X75-40 is a double-acting, single-rod pen-size mini cylinder featuring a 40mm adjustable window. A rear adjuster screw and lock nut let you shorten the retract end, providing an effective stroke range of 35 to 75mm. The extend end remains fixed. It uses an M5x0.8 air port and a rod-end thread of M10x1.0.
Output force matches a standard PB body of the same bore, giving 100.5N push and 90.7N pull at 0.5MPa. The 5mm stainless steel rod and barrel offer a slim profile. A fixed TPU bumper at each end decelerates the last few millimeters of travel. For real work at 0.5MPa, plan for a safe working load of about 60N, which accounts for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 40 mm (35–75 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 PBJ16X75-40
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×75 | 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 PBJ16X75-40 Is Used
Changeover Fixtures
Dial in the retract end from 35 to 75mm to switch product sizes on a single jig without machining new hard stops.
Variable-Depth Insertion
Tune the exact rear position on a press station for delicate part insertion, locking the nut once the depth is proven.
Trial Stop Positioning
Set precise retract limits during prototype testing, exploring the 40mm window to find the optimal end position before finalizing the layout.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-40 the Right Cylinder?
For lower force needs, the 12mm bore variant provides 56.5N push at 0.5MPa. If you need more thrust, the 16mm bore used here gives 100.5N push at 0.5MPa. Remember that only the retract position is field-settable; the extend end is fixed. After dialing in your 35-75mm range, re-tighten the lock nut because vibration can drift an unlocked screw. Confirm your ordering essentials: 16mm bore, 75mm nominal stroke, 40mm window, and any required LB or FA mount.
Because the 5mm rod is designed for coaxial thrust, over long strokes or off-axis loads you should add an external guide or linear bearing to prevent side load. The fixed TPU bumper only decelerates the last few mm; above mid speed with real tooling mass it bottoms out, so meter-out the exhaust or fit an external shock absorber. This plain cylinder does not hold position on air loss; the piston drifts without live pressure.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 35–75 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 PBJ16X75-40 FAQ
The effective stroke range is 35 to 75mm. At 0.5MPa, push force is 100.5N and pull force is 90.7N. At the maximum 0.7MPa operating pressure, push is 140.7N and pull is 126.9N.
The rear M5x0.8 screw shortens the retract end by 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.
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