Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø16mm bore it gives a nominal 50mm stroke with a 40mm fine-adjustable window — settable from 10 to 50mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke50 mm
- Adjust window40 mm
- Effective range10–50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S
The AirTAC PBJ16X50-40S is a double-acting, double-rod pen-size mini cylinder featuring a 40mm adjustable window. A rear adjuster screw with a lock nut lets you shorten the retract end, providing an effective stroke range of 10-50mm. The extend end remains fixed. The integrated -S magnet works with reed or electronic switches.
Built with a SUS304 stainless rod and barrel, this slim body saves space in tight jigs. It uses an M5x0.8 air port and an M10x1.0 rod-end thread. A fixed TPU bumper cushions each end. The thin Ø5mm rod handles coaxial thrust, so add an external guide for off-axis loads.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 50 mm |
| Adjustable window | 40 mm (10–50 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 |
PBJ is a double-rod cylinder: the rear rod carries the stroke adjuster, which sets the stroke end within the adjustable window. Confirm the set position against the product label before installation.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 90.7 N | 90.7 N |
| 0.7 MPa (max) | 126.9 N | 126.9 N |
The rear rod passes through the rear cover, so both piston faces lose rod area: push is shown at the annular-area value (conservative), lower than a single-rod PB push of the same bore. Size with a friction margin.
Model Code: Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×50 | Nominal stroke length in mm. |
| -40 | 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 PBJ16X50-40S Is Used
Changeover Fixtures
Dial in the exact retract length during product changeovers. The 10-50mm range lets you set new stop positions on the fly without machining new hard stops.
Trial Insertion Stops
Test insertion depths safely. Back out the rear screw to reduce the stroke for initial trials, then lock the nut for the final production run.
Vertical Lift Jigs
The field-settable stroke ensures precise lowering without reordering hardware.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X50-40S the Right Cylinder?
Stepping down to a bore 12 gives 56.5N, while stepping up is not applicable here as 16mm is the largest PBJ bore. Remember that only the retract position is tunable; the extend end is fixed. Always re-tighten the lock nut after setting the rear screw to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 50mm nominal stroke, 40mm window, S magnet, and your mounting choice.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 10–50 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 Double rod: the rear rod carries the stroke adjuster.
- 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 PBJ16X50-40S FAQ
The effective stroke range is 10-50mm.
A rear M5x0.8 adjuster screw shortens the retract end only, while the extend end is fixed. After tuning the position on your machine, you must re-tighten the lock nut to prevent vibration drift.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PBJ Pen-Size Cylinders
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