Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-10S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-10S 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 10mm fine-adjustable window — settable from 115 to 125mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke125 mm
- Adjust window10 mm
- Effective range115–125 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 PBJ16X125-10S
The AirTAC PBJ16X125-10S is a double-acting, double-rod pen-size mini cylinder with a 10mm adjustable stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 115mm to 125mm. The extend end remains fixed. It features a Ø5mm piston rod, an M5x0.8 air port, and an M10x1.0 rod-end thread.
The SUS304 stainless barrel and slim body suit tight jigs and end-of-arm tooling. A fixed TPU bumper decelerates the last few millimeters of travel. The -S suffix denotes a built-in piston magnet for position sensing with reed or electronic switches. Because the rod is only Ø5mm, use an external guide or linear bearing for off-axis loads over this long 125mm stroke.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-10S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-10S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 10 mm (115–125 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 PBJ16X125-10S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -10 | 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 PBJ16X125-10S Is Used
Changeover Fixtures
Dial in the retract position from 115mm to 125mm during product changeovers without swapping hardware.
Trial Insertion Stops
Fine-tune the rear screw for variable-depth press fits, locking the nut once the optimal depth is found.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-10S the Right Cylinder?
Remember that only the retract position is field-settable; the extend end is fixed. After dialing in your 115-125mm range, re-tighten the lock nut to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 125mm nominal stroke, 10mm window, S magnet, and any LB or FA mount.
Note that a plain PBJ does not hold position on air loss; the piston drifts. Use an external stop or rod lock for fail-safe load holding. Also, the fixed TPU bumper only decelerates the final few millimeters. At high cycle speeds with heavy tooling mass, it will bottom out, so meter-out the exhaust or fit an external shock absorber.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 115–125 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 PBJ16X125-10S FAQ
The effective stroke range is 115mm to 125mm.
The rear screw shortens only the retract end; the extend end is fixed. After setting your stroke, re-tighten the lock nut to prevent vibration drift. The -S magnet works 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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