Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S 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 70mm stroke with a 30mm fine-adjustable window — settable from 40 to 70mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke70 mm
- Adjust window30 mm
- Effective range40–70 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S
The AirTAC PBJ16X70-30S is a JIS pen-size double-acting single-rod mini cylinder with a 30mm adjustable window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 40-70mm. You can tune the back position directly on the machine without ordering new hardware. The extend end remains fixed. It includes a built-in magnet for position sensing.
Output force matches the standard PB equivalent of this bore, providing 100.5N push and 90.7N pull at 0.5MPa. The 16mm bore uses an M5x0.8 air port, an M10x1.0 rod-end thread, and a fixed TPU bumper at each end. Plan for a safe working load of about 60N (roughly 60% of the 0.5MPa theoretical push) to account for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 70 mm |
| Adjustable window | 30 mm (40–70 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 PBJ16X70-30S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×70 | Nominal stroke length in mm. |
| -30 | 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 PBJ16X70-30S Is Used
Changeover Fixtures
Quickly tune the 40-70mm retract position during product changeovers without swapping cylinders, reducing machine downtime.
Trial Stops
Set precise end-of-stroke stops for prototype testing and probing, adjusting depth in seconds via the rear screw.
Variable-Depth Insertion
Dial in exact insertion depths for pins or plugs on the assembly line, locking the nut once the perfect stroke is found.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-30S the Right Cylinder?
For sizing, the adjacent 12mm bore yields 56.5N push at 0.5MPa, while this 16mm bore provides 100.5N. If you need less force, drop to the 12mm; if you need more and 140.7N at 0.7MPa is insufficient, consider a larger series. Remember that only the retract end is adjustable, so verify your layout allows rear screw access. Re-tighten the lock nut after setting to prevent vibration drift.
Confirm your ordering essentials: 16mm bore, 70mm nominal stroke, 30mm window, S magnet, and any LB or FA mounting. The Ø5mm rod is built for coaxial thrust, so add an external guide or linear bearing for off-axis loads.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 40–70 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 PBJ16X70-30S FAQ
At 0.5MPa it provides 100.5N push and 90.7N pull. At the maximum 0.7MPa it provides 140.7N push and 126.9N pull. The 30mm adjustable window gives an effective stroke range of 40-70mm.
The rear screw shortens the retract end only; the extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. The S option includes a built-in piston magnet compatible with AirTAC reed or electronic switches.
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1-Year Warranty
Covers non-human-caused product damage.
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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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