Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-20S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-20S 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 150mm stroke with a 20mm fine-adjustable window — settable from 130 to 150mm, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke150 mm
- Adjust window20 mm
- Effective range130–150 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 PBJ12X150-20S
The AirTAC PBJ12X150-20S is a double-acting, double-rod pen-size mini cylinder with a 20mm adjustable window. A rear M5x0.8 adjuster screw shortens the retract end, giving an effective stroke range of 130-150mm. The extend end remains fixed. The M5x0.8 air port and SUS304 stainless construction ensure reliable operation in tight spaces.
This -S variant includes a built-in piston magnet for position sensing with reed or electronic switches. The fixed TPU bumper decelerates the last few millimeters of travel; at high cycle speeds with real tooling mass, meter-out the exhaust or add an external shock absorber to prevent bottoming out.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-20S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-20S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 20 mm (130–150 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 PBJ12X150-20S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -20 | 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 PBJ12X150-20S Is Used
Variable-Depth Insertion
Dial in precise press fits during new product trials by adjusting the retract stop from 130 to 150mm without swapping cylinders.
Quick Changeover Fixtures
Adapt end-of-arm tooling to multiple part heights on the fly by turning the rear screw and locking the nut for repeatable positioning.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-20S the Right Cylinder?
Remember that only the back position is adjustable—re-tighten the lock nut after setting the 130-150mm range to prevent vibration drift. For pure coaxial thrust over long strokes, add an external guide or linear bearing to protect the slender Ø5mm rod from side load.
When ordering, confirm the 12mm bore, 150mm nominal stroke, 20mm window, built-in magnet, and your mounting choice. The fixed body accepts LB or FA accessories. If a fixed length is acceptable, the standard PB series avoids the adjuster entirely; for equal push and pull force, choose the PBD double-rod variant.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 130–150 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 PBJ12X150-20S FAQ
The effective stroke range is 130-150mm. Adjusting the stroke does not alter these force figures.
A rear M5x0.8 screw shortens the retract end only; the extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. A plain pen cylinder does not hold position on air loss—the piston drifts, so use an external stop or rod lock 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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