Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S 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 50mm fine-adjustable window — settable from 100 to 150mm, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke150 mm
- Adjust window50 mm
- Effective range100–150 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S
The AirTAC PBJ12X150-50S is a double-acting, single-rod pen-size mini cylinder with a 50mm adjustable-stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 100-150mm. The extend end remains fixed. Force is identical to a standard PB cylinder of the same bore, 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 air port and an M10x1.0 rod-end thread. The built-in magnet (-S) works with reed or electronic switches. For practical sizing, plan for a safe working load of about 34N (roughly 60% of the 0.5MPa push force) to account for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 50 mm (100–150 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 PBJ12X150-50S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -50 | 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 PBJ12X150-50S Is Used
Changeover Fixtures
Set different retract stops for product changeovers directly on the machine, avoiding hardware swaps.
Trial Stops
Dial in the exact 100-150mm back position during prototype testing before locking the adjuster nut.
Variable Depth Insert
Adjust the retract distance for pressing parts of varying heights without needing multiple cylinders.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X150-50S the Right Cylinder?
When sizing, note the neighbouring bores: a 10mm PB gives 39.3N push, while a 16mm PB gives 100.5N push at 0.5MPa. This 12mm model provides 56.5N push, sitting neatly between them. Remember that only the retract position is field-settable; the extend end is fixed. Always re-tighten the M5x0.8 adjuster lock nut after setting to prevent vibration drift.
Confirm your ordering essentials: 12mm bore, 150mm nominal stroke, 50mm window, S for the internal magnet, and your mounting choice. The Ø5mm rod is built for coaxial thrust, so over this 150mm stroke add an external guide or linear bearing for any off-axis loads.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 100–150 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 PBJ12X150-50S FAQ
The effective stroke range is 100-150mm. At 0.5MPa it gives 56.5N push and 46.7N pull. At the 0.7MPa maximum it gives 79.1N push and 65.4N pull.
A rear screw shortens only the retract end; the extend end is fixed. You set the length from 100 to 150mm on the machine, then re-tighten the lock nut to prevent vibration drift.
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Standard models usually ship in 3-4 days.
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Related AirTAC PBJ Pen-Size Cylinders
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