Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X125-100
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X125-100 is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø12mm 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.
- BoreØ12 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 PBJ12X125-100
The AirTAC PBJ12X125-100 is a double-acting, double-rod pen-size mini cylinder featuring a 100mm adjustable window. A rear adjuster screw shortens the retract end, giving an effective stroke range of 25-125mm. You can set the exact length on the machine without buying new hardware. The extend end remains fixed.
The slim SUS304 stainless body includes a fixed TPU bumper at each end. The M5x0.8 air port and M10x1.0 rod-end thread match the 12mm bore standard.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X125-100 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X125-100 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 46.7 N | 46.7 N |
| 0.7 MPa (max) | 65.4 N | 65.4 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 PBJ12X125-100
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | 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 PBJ12X125-100 Is Used
Changeover Fixtures
Dial in the retract stop from 25 to 125mm during product changeovers to hit new depths without machining new stops.
Trial Stops
Use the 100mm adjuster window to find the exact retracted position during R&D testing before locking the nut down.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X125-100 the Right Cylinder?
Keep in mind only the retract position is tunable, so verify your extend end layout. Re-tighten the lock nut after setting to prevent vibration drift. Confirm ordering essentials: bore, stroke, window, magnet S, and mount.
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 PBJ12X125-100 FAQ
The effective stroke range is 25-125mm.
The screw shortens only the retract end; the extend end is fixed. After setting your desired length, re-tighten the lock nut to prevent vibration drift. The adjuster thread is M5x0.8.
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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