Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S 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 80mm stroke with a 40mm fine-adjustable window — settable from 40 to 80mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke80 mm
- Adjust window40 mm
- Effective range40–80 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S
The AirTAC PBJ16X80-40S is a double-acting, single-rod pen-size mini cylinder with a 40 mm adjustable-stroke window. A rear M5x0.8 adjuster screw shortens the retract end, giving an effective stroke range of 40-80 mm. You tune the length directly on the machine during commissioning, avoiding a re-order for a slightly different travel. The extend end remains fixed.
Output force matches a standard PB cylinder of the same bore, meaning the adjuster carries zero force penalty. It delivers 100.5 N push and 90.7 N pull at 0.5 MPa. The slim SUS304 stainless body saves space in tight jigs, and a fixed TPU bumper cushions each end. This -S model includes a built-in magnet for position sensing.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 40 mm (40–80 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 PBJ16X80-40S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | 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 PBJ16X80-40S Is Used
Variable-Depth Insertion
Dial in precise pressing depths for different part heights using the rear screw, shifting the retract window from 40 to 80 mm without swapping cylinders on the line.
Changeover Fixtures
Speed up product changeovers by adjusting the retract stop on the fly, letting a single jig handle multiple stroke lengths quickly and accurately.
Trial Stop Positioning
Set temporary mechanical stops during machine prototyping, fine-tuning the back position by up to 40 mm before locking the nut for final production runs.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-40S the Right Cylinder?
This 16 mm bore provides 100.5 N push at 0.5 MPa. Stepping down to a 12 mm bore drops push to 56.5 N, while a larger 20 mm bore would exceed this unit. Plan for a safe working load of about 60 N (roughly 60% of the 0.5 MPa figure) to account for seal friction and smooth travel. For vertical lifts, expect to raise about 5.1 kg safely with a 2:1 margin.
Remember that only the retract position is adjustable; the extend end is fixed. Always re-tighten the lock nut after setting the rear screw, as vibration can drift an unlocked adjuster. Confirm your ordering essentials: 16 mm bore, 80 mm nominal stroke, 40 mm window, built-in magnet, and any LB or FA mount. The air port is M5x0.8.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 40–80 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 PBJ16X80-40S FAQ
The effective stroke range is 40-80 mm. At 0.5 MPa, push force is 100.5 N and pull is 90.7 N. At the maximum 0.7 MPa operating pressure, push is 140.7 N and pull is 126.9 N. Adjusting the stroke does not alter these forces.
A rear M5x0.8 screw shortens the retract end by up to 40 mm, while the extend end remains fixed. You must re-tighten the lock nut after setting to prevent vibration drift. The cylinder does not hold position on air loss; the piston drifts and the fixed TPU bumper only decelerates near stroke end, so use an external stop for fail-safe holding.
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Related AirTAC PBJ Pen-Size Cylinders
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