Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S 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 80mm stroke with a 50mm fine-adjustable window — settable from 30 to 80mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke80 mm
- Adjust window50 mm
- Effective range30–80 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S
The AirTAC PBJ16X80-50S is a double-acting, single-rod pen-size mini cylinder with a 50mm adjustable window, yielding an effective stroke range of 30-80mm. A rear M5x0.8 adjuster screw shortens the retract end, while the extend end remains fixed. Output force equals a standard PB body, delivering 100.5N push and 90.7N pull at 0.5MPa. The -S suffix adds a built-in piston magnet for reed or electronic switches.
The slim SUS304 stainless body saves space in tight jigs, and a fixed TPU bumper cushions each end. For real-world sizing, plan for a safe working load of about 60N (roughly 60% of the 0.5MPa push figure) to account for seal friction. This equates to lifting about 5.1kg vertically with a sane 2:1 margin. The Ø5mm rod handles coaxial thrust; use an external guide for off-axis loads.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 50 mm (30–80 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 PBJ16X80-50S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | 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 PBJ16X80-50S Is Used
Changeover Fixtures
Rapidly tune the 30-80mm retract distance during product changeovers without machining new hard stops or reordering hardware.
Trial Insertion Stops
Dial in exact insertion depths on the machine. The rear screw lets you test variable depths before locking the nut for production.
Light Vertical Lifts
Lifts about 5.1kg vertically with a 2:1 safety margin at 0.5MPa. The built-in magnet confirms position for tight end-of-arm tooling.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-50S the Right Cylinder?
When sizing this 16mm bore actuator, compare it with neighbours: a 12mm bore gives 56.5N push, while a 16mm bore provides 100.5N push at 0.5MPa. If your fixture needs less force, step down; if you need maximum thrust, 16mm is the largest pen-size option. Remember that only the back position is adjustable via the rear screw—extend remains fixed. Always re-tighten the lock nut after setting your 30-80mm range to prevent vibration drift.
Confirm your ordering essentials: 16mm bore, 80mm nominal stroke, 50mm window, S magnet, and any LB or FA mount. The air port is M5x0.8. Note that a plain pneumatic cylinder does not hold position on air loss; the piston drifts and the bumper only decelerates near stroke end. Add an external stop for fail-safe holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 30–80 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 PBJ16X80-50S FAQ
The effective stroke range is 30-80mm (80mm nominal minus the 50mm window). Force equals a standard PB: push 100.5N and pull 90.7N at 0.5MPa; push 140.7N and pull 126.9N at the 0.7MPa maximum. Adjusting the stroke does not alter these 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. The -S suffix indicates a built-in piston magnet that works with AirTAC reed or electronic switches.
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Related AirTAC PBJ Pen-Size Cylinders
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