Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30S 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 PBJ16X50-30S
The AirTAC PBJ16X50-30S is a double-acting, single-rod pen-size mini cylinder with an adjustable stroke. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 20-50mm. The extend end remains fixed. Output force matches a standard PB cylinder of the same bore, delivering 100.5N push at 0.5MPa. The air port is M5x0.8.
The Ø5mm rod and barrel are stainless steel, fitted with a fixed TPU bumper at each end. The -S suffix denotes a built-in piston magnet for position sensing with reed or electronic switches. The thin rod is designed for coaxial thrust; over long strokes or off-axis loads, add an external guide to prevent side-load wear.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30S |
|---|---|
| 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 PBJ16X50-30S
| 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 PBJ16X50-30S Is Used
Changeover Fixtures
Dial in the retract length from 20 to 50mm during product changeovers to accommodate different part heights without swapping cylinder hardware.
Trial Insertion Stops
Fine-tune the penetration depth on test jigs, letting the rear screw absorb variance before locking the nut for the final assembly run.
Variable Depth Pressing
Set precise downward push positions for light pressing tasks, using the fixed TPU bumper to decelerate the stroke end while relying on the magnet for confirmation.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-30S the Right Cylinder?
Size both ways against your load: a 12mm bore gives 56.5N push, while this 16mm bore provides 100.5N at 0.5MPa. Plan for a safe working load of about 60N (roughly 60% of theoretical force) to account for seal friction. For vertical lifts, expect to raise about 5.1kg with a 2:1 safety margin. Keep the maximum operating pressure at 0.7MPa.
Remember that only the retract position is field-settable; the extend end is fixed. Always re-tighten the lock nut after tuning to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 50mm stroke, 30mm window, S magnet, and mounting accessories.
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 PBJ16X50-30S FAQ
The effective stroke range is 20-50mm. At 0.5MPa, push force is 100.5N and pull force is 90.7N. At the maximum 0.7MPa, push is 140.7N and pull is 126.9N.
The rear screw shortens only the retract end; the extend end is fixed. After setting your desired length, you must re-tighten the lock nut to prevent vibration drift. The cylinder does not hold position on air loss without an external stop.
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Related AirTAC PBJ Pen-Size Cylinders
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