Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø16mm bore it gives a nominal 125mm stroke with a 100mm fine-adjustable window — settable from 25 to 125mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke125 mm
- Adjust window100 mm
- Effective range25–125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S
The AirTAC PBJ16X125-100S is a double-acting, double-rod pen-size mini cylinder with a 100mm adjustable-stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 25-125mm. This allows on-machine stroke tuning without ordering new hardware. The extend end remains fixed. The adjuster carries zero force penalty.
Built with a SUS304 stainless steel barrel and a slim 16mm body, it saves space in tight jigs and end-of-arm tooling. The Ø5mm piston rod uses an M10x1.0 rod-end thread, and the air port is M5x0.8. A fixed TPU bumper decelerates the last few millimeters of travel. Because the rod is only 5mm thick, use an external guide or linear bearing for off-axis loads over long strokes to prevent side-load damage. The built-in magnet works with reed or electronic switches.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 100 mm (25–125 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 |
PBJ is a double-rod cylinder: the rear rod carries the stroke adjuster, which sets the stroke end within the adjustable window. Confirm the set position against the product label before installation.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 90.7 N | 90.7 N |
| 0.7 MPa (max) | 126.9 N | 126.9 N |
The rear rod passes through the rear cover, so both piston faces lose rod area: push is shown at the annular-area value (conservative), lower than a single-rod PB push of the same bore. Size with a friction margin.
Model Code: Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -100 | 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 PBJ16X125-100S Is Used
Changeover Fixtures
Quickly dial in the retract stop from 25 to 125mm during product changeovers, eliminating the need to swap physical spacers on the fly.
Trial Insertion Stops
Fine-tune insertion depths on prototype tooling by adjusting the rear screw, finding the exact position before locking the nut.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-100S the Right Cylinder?
Remember that only the retract end is adjustable. After setting your 25-125mm range, re-tighten the lock nut so vibration does not drift the screw. Confirm your ordering essentials: 16mm bore, 125mm nominal stroke, 100mm window, S magnet, and any LB or FA mounts.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 25–125 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 Double rod: the rear rod carries the stroke adjuster.
- 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 PBJ16X125-100S FAQ
The effective stroke range is 25-125mm. 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 air port is M5x0.8.
A rear M5x0.8 adjuster screw shortens the retract end, 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 an external rod lock is needed for fail-safe holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PBJ Pen-Size Cylinders
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