Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100 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 100mm stroke with a 100mm fine-adjustable window, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke100 mm
- Adjust window100 mm
- Effective range0–100 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100
The AirTAC PBJ12X100-100 is a double-acting, single-rod pen-size mini cylinder built on the standard PB body. A rear adjuster screw with a lock nut shortens the retract end, giving an effective stroke range of 0 to 100 mm. The extend end remains fixed. Output force is identical to a standard PB of the same bore, delivering 56.5 N push and 46.7 N pull at 0.5 MPa. The barrel and 5 mm rod are stainless steel, and a fixed TPU bumper cushions each end.
This configuration uses an M5x0.8 air port and an M10x1.0 rod-end thread. Because the adjuster carries zero force penalty, you can dial in the exact return position on the machine without reordering hardware. Plan for a safe working load of about 34 N, which represents roughly 60 percent of the 0.5 MPa push rating to account for seal friction. For vertical lifts, expect to move around 2.9 kg safely with a standard 2:1 margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 100 mm (0–100 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 PBJ12X100-100
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×100 | 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 PBJ12X100-100 Is Used
Changeover Fixtures
Dial in the exact retract distance from 0 to 100 mm during machine format changeovers without swapping out physical cylinder hardware.
Trial Positioning
Use the rear screw as a test stop to find the optimal insertion depth for delicate probes or sensing pins before locking the nut.
Variable Depth Pressing
Set precise downward end-points for light-duty pressing or inserting tasks, adjusting the 0 to 100 mm window on the fly for different part heights.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-100 the Right Cylinder?
When sizing this bore, consider the neighbouring options. Stepping down to a 10 mm bore yields 39.3 N push at 0.5 MPa, while stepping up to a 16 mm bore provides 100.5 N push at 0.5 MPa. Remember that only the retract position is adjustable; the extend end is fixed. Always re-tighten the lock nut after setting the rear screw to prevent vibration drift. Confirm your ordering essentials: 12 mm bore, 100 mm nominal stroke, 100 mm window, magnet option, and mounting style.
The 5 mm rod is designed strictly for coaxial thrust. Over this 100 mm stroke, any off-axis load demands an external guide or linear bearing to prevent rod bending. Additionally, the fixed TPU bumper only decelerates the last few millimetres of travel. At high cycling speeds with heavy tooling mass, meter-out the exhaust or install an external shock absorber to prevent end-cap impact. A plain cylinder does not hold position on air loss; add an external rod lock for fail-safe load holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 0–100 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 PBJ12X100-100 FAQ
The effective stroke range is 0 to 100 mm. At 0.5 MPa, the push force is 56.5 N and the pull force is 46.7 N. At the maximum operating pressure of 0.7 MPa, the push force is 79.1 N and the pull force is 65.4 N.
The rear M5x0.8 adjuster screw shortens the retract end of the stroke, while the extend end remains fixed. You must re-tighten the lock nut after setting the desired position to prevent vibration drift.
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