Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40 is a double-acting pen-size mini cylinder with a rear adjuster screw that shortens the retract end of the stroke. On a Ø12mm bore it gives a nominal 150mm stroke with a 40mm fine-adjustable window — settable from 110 to 150mm, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke150 mm
- Adjust window40 mm
- Effective range110–150 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40
The AirTAC PBJ12X150-40 is a double-acting, single-rod pen-size mini cylinder with a 40mm adjustment window. A rear screw and lock nut shorten the retract end, giving an effective stroke range of 110-150mm. The extend end remains fixed. Output force matches a standard PB body, delivering 56.5N push and 46.7N pull at 0.5MPa.
The slim SUS304 stainless body saves space in tight jigs. It uses an M5x0.8 port and a fixed TPU bumper at each end. For practical sizing, plan for a safe working load of about 34N (roughly 60% of the 0.5MPa push figure) to account for seal friction. This equates to lifting about 2.9kg vertically with a 2:1 safety margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 40 mm (110–150 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 |
The adjuster shortens only the retract end; the extend end is fixed. Force is unchanged from the standard PB double-acting cylinder. Confirm the set position against the product label before installation.
Theoretical Output Force (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 56.5 N | 46.7 N |
| 0.7 MPa (max) | 79.1 N | 65.4 N |
Adjusting the stroke does not change output force — these are the same values as the standard PB double-acting cylinder of the same bore. Size with a friction margin.
Model Code: Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -40 | 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 PBJ12X150-40 Is Used
Changeover Fixtures
Quickly tune the 110-150mm retract length on-site when swapping product families, avoiding the need to reorder hardware for different part heights.
Variable-Depth Insertion
Dial in the exact press depth for delicate inserts using the rear screw, then lock the nut to maintain the precise position during production runs.
Trial Stop Positioning
Set prototype stops anywhere in the 40mm window to test end positions before finalizing machine layout, perfect for R&D validation jigs.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-40 the Right Cylinder?
This 12mm bore provides 56.5N push at 0.5MPa. If you need less force, the 10mm bore offers 39.3N push; if you need more, the 16mm bore provides 100.5N push. Remember that only the retract position is tunable from 110 to 150mm, while the extend end is fixed. Re-tighten the lock nut after setting to prevent vibration drift.
Confirm your ordering essentials: 12mm bore, 150mm nominal stroke, 40mm window, and mounting choice. The piston rod is only 5mm thick, so over this 150mm stroke, add an external guide or linear bearing to prevent side load damage. The fixed TPU bumper only decelerates the last few mm, so meter-out the exhaust if moving real tooling mass at high speed.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 110–150 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 The adjuster shortens the retract end only.
- 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 PBJ12X150-40 FAQ
The effective stroke range is 110-150mm. At 0.5MPa it provides 56.5N push and 46.7N pull. At the maximum 0.7MPa operating pressure, it provides 79.1N push and 65.4N pull. Adjusting the stroke does not change these force figures.
The rear screw shortens only the retract end of the stroke, while the extend end remains fixed. You turn the M5x0.8 adjuster to set the position, then re-tighten the lock nut. A plain cylinder does not hold position on air loss, so use an external stop for fail-safe holding.
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Related AirTAC PBJ Pen-Size Cylinders
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