Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S 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 20mm fine-adjustable window — settable from 60 to 80mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke80 mm
- Adjust window20 mm
- Effective range60–80 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S
The AirTAC PBJ16X80-20S is a double-acting, single-rod pen-size mini cylinder with a 20mm adjustable stroke window. A rear adjuster screw shortens the retract end, yielding an effective stroke range of 60 to 80mm. Output force equals a standard PB body of the same bore, delivering 100.5N push at 0.5 MPa. The M5x0.8 air port and fixed TPU bumper are standard.
The rear screw allows on-machine stroke tuning without buying new hardware. Because the extend end is fixed, only the back position changes. The built-in magnet works with reed or electronic switches. Plan for a safe working load of about 60N (roughly 60% of the 0.5 MPa push force) to account for seal friction and smooth travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 20 mm (60–80 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 PBJ16X80-20S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×80 | Nominal stroke length in mm. |
| -20 | 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 PBJ16X80-20S Is Used
Changeover Fixtures
Dial in the retract stop during product changeovers to set new gripping depths without machining replacement stops.
Trial Stops
Fine-tune the back position during prototype testing to find the exact 60-80mm stroke length needed for the process.
Variable-Depth Insertion
Adjust the retract end on the fly for pressing tasks that require different insertion depths on the same jig.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S the Right Cylinder?
For 16mm bore sizing, the adjacent option is a 12mm cylinder offering 56.5N push at 0.5 MPa. If your application needs more thrust, the 16mm bore here provides 100.5N push at 0.5 MPa, while a larger bore would be required for heavier loads. Remember to re-tighten the lock nut after setting the rear screw to prevent vibration drift.
Confirm your ordering essentials: 16mm bore, 80mm nominal stroke, 20mm window, S magnet, and any LB or FA mounting hardware. The Ø5mm rod is built for coaxial thrust; over the 80mm stroke, use an external guide to prevent side-load damage.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 60–80 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 PBJ16X80-20S FAQ
The effective stroke range is 60 to 80mm. At 0.5 MPa, push force is 100.5N and pull is 90.7N. At the 0.7 MPa maximum, push is 140.7N and pull is 126.9N. Adjusting the stroke does not alter these force figures.
The rear M5x0.8 screw shortens only the retract end, while the extend end remains fixed. You must re-tighten the lock nut after setting your desired length to prevent vibration drift. The fixed TPU bumper decelerates the last few mm of travel.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PBJ Pen-Size Cylinders
Request a Quote for Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X80-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.