Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-30S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-30S 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 30mm fine-adjustable window — settable from 95 to 125mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke125 mm
- Adjust window30 mm
- Effective range95–125 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 PBJ16X125-30S
The AirTAC PBJ16X125-30S is a double-acting, double-rod pen-size mini cylinder with a 30mm adjustable-stroke window. A rear M5x0.8 adjuster screw shortens the retract end, giving an effective stroke range of 95-125mm. You tune the exact length on the machine without ordering new hardware. The extend end remains fixed.
The SUS304 stainless build includes a fixed TPU bumper at each end. Because the rod is only Ø5mm, add an external guide for off-axis loads over this 125mm stroke. The built-in magnet works with reed or electronic switches.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-30S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-30S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 30 mm (95–125 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 PBJ16X125-30S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | 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 PBJ16X125-30S Is Used
Changeover Fixtures
Dial in the exact retract distance when swapping product families on a shared jig, using the rear screw to set the 95-125mm window without machining new stops.
Variable-Depth Insertion
Press parts to differing depths on the fly by adjusting the back position, relying on the fixed TPU bumper to decelerate the extend end.
Trial Stop Positioning
Find the optimal end-of-stroke location during prototyping by trimming the retract length in the field, then locking the M5x0.8 nut for production runs.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-30S the Right Cylinder?
Stepping down to a 12mm bore drops push to 56.5N, while a larger 20mm bore yields higher force if needed.
Remember that only the retract position is adjustable; the extend end is fixed. After setting your 95-125mm range, re-tighten the lock nut so vibration does not drift the screw. Confirm your ordering essentials: 16mm bore, 125mm stroke, 30mm window, S 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 95–125 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 PBJ16X125-30S FAQ
The effective stroke range is 95-125mm. Adjusting the stroke does not alter these forces.
A rear screw shortens only the retract end of the stroke; the extend end is fixed. You set the desired position and then re-tighten the lock nut to prevent vibration drift. The built-in S magnet allows tracking with reed or electronic switches.
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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