Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20S 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 75mm stroke with a 20mm fine-adjustable window — settable from 55 to 75mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke75 mm
- Adjust window20 mm
- Effective range55–75 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 PBJ16X75-20S
The AirTAC PBJ16X75-20S is a double-acting, double-rod pen-size mini cylinder with a 20mm adjustable stroke window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 55-75mm. The extend end remains fixed.
The slim stainless body features a built-in piston magnet for reed or electronic switches. It uses an M5x0.8 air port, an M10x1.0 rod-end thread, and an M5x0.8 adjuster thread. A fixed TPU bumper decelerates the last few millimeters of travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 20 mm (55–75 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 PBJ16X75-20S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×75 | 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 PBJ16X75-20S Is Used
Changeover Fixtures
Dial in the exact 55-75mm retract position during product changeovers without machining new spacer blocks or reordering cylinders.
Trial Stops
Fine-tune the back position for prototype testing and trial stops, locking the M5x0.8 adjuster nut once the optimal length is found.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X75-20S the Right Cylinder?
When sizing this PBJ16X75-20S, remember that only the retract position is tunable; the extend end is fixed. Always re-tighten the lock nut after setting the 55-75mm range to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 75mm nominal stroke, 20mm window, S magnet, and mounting hardware.
The thin Ø5mm rod is built for coaxial thrust. Over this 75mm stroke or with off-axis loads, add an external guide or linear bearing to prevent side-load wear. At higher speeds with real tooling mass, the fixed TPU bumper can bottom out, so meter-out the exhaust or add an external shock absorber.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 55–75 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 PBJ16X75-20S FAQ
The effective stroke range is 55-75mm (75mm nominal minus a 20mm window).
A rear screw shortens the retract end only; the extend end is fixed. You set the length on the machine and re-tighten the lock nut to prevent vibration drift. The built-in S magnet works with reed or electronic switches.
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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