Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30 is a double-acting pen-size mini cylinder with a rear adjuster screw that shortens the retract end of the stroke. On a Ø16mm bore it gives a nominal 50mm stroke with a 30mm fine-adjustable window — settable from 20 to 50mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke50 mm
- Adjust window30 mm
- Effective range20–50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30
The AirTAC PBJ16X50-30 is a double-acting, adjustable-stroke pen cylinder built on a stainless steel slim mini body. A rear adjuster screw with a lock nut shortens the retract end, giving an effective stroke range of 20-50 mm. The extend end remains fixed. Output force equals a standard PB of this bore, providing 100.5 N push and 90.7 N pull at 0.5 MPa. The air port is M5x0.8 and the rod-end thread is M10x1.0.
The fixed TPU bumper decelerates the last few millimeters of travel. Because the piston rod is only Ø5 mm, use an external guide or linear bearing for off-axis loads over long strokes. For safe practice, plan for about 60 N of real work at 0.5 MPa, which accounts for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 50 mm |
| Adjustable window | 30 mm (20–50 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 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 PBJ16X50-30
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×50 | Nominal stroke length in mm. |
| -30 | 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 PBJ16X50-30 Is Used
Changeover Fixtures
Set variable retract stops during product changeovers to accommodate different part heights without swapping hardware.
Trial Stops
Dial in the exact 20-50 mm retract position during R&D testing before finalizing a fixed-stroke design.
Variable-Depth Insert
Adjust the downward extend depth on the fly for pressing operations with varying material thicknesses.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30 the Right Cylinder?
When sizing this 16 mm bore, compare it with neighbours: a 12 mm bore gives 56.5 N push, while a 16 mm bore provides 100.5 N push at 0.5 MPa. Remember that only the retract end is adjustable, so verify your layout allows access to the rear screw. Re-tighten the lock nut after setting to prevent vibration drift.
Confirm your ordering essentials: bore, stroke, window, magnet, and mount. This base PBJ16X50-30 has no sensor magnet. If you need a fixed length, choose the PB series; for front bolt mounting, select PBR.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 20–50 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 PBJ16X50-30 FAQ
The effective stroke range is 20-50 mm. The double-acting force is 100.5 N push and 90.7 N pull at 0.5 MPa. At the maximum 0.7 MPa operating pressure, it provides 140.7 N push and 126.9 N pull.
A rear adjuster screw shortens the retract end of the stroke, while the extend end remains fixed. After setting your desired length, re-tighten the lock nut to prevent vibration drift. A plain PBJ 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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