Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 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 40mm stroke with a 40mm fine-adjustable window, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke40 mm
- Adjust window40 mm
- Effective range0–40 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 PBJ16X40-40
The AirTAC PBJ16X40-40 is a double-acting, double-rod pen-size mini cylinder featuring a 40mm adjustable stroke window. A rear adjuster screw with lock nut shortens the retract end, yielding an effective stroke range of 0-40mm. The M5x0.8 port and Ø5 mm stainless rod handle tight jig spacing.
Only the back position is tunable; the extend end is fixed. The slim body uses a fixed TPU bumper at each end for end-of-stroke deceleration. The rear adjuster thread is M5x0.8.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 40 mm (0–40 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 PBJ16X40-40
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×40 | 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 PBJ16X40-40 Is Used
Changeover Fixtures
Dial in the exact 0-40mm retract position during product changeovers without machining new hard stops.
Trial Assembly Stops
Fine-tune insertion depth on test jigs safely, testing different effective lengths on the fly.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 the Right Cylinder?
If you need more thrust, the next size up would require a different series. Remember that twisting the rear screw alters only the retract position, so verify your layout clearance on the back end. Always re-tighten the lock nut after setting to prevent vibration drift. Confirm your ordering essentials: 16mm bore, 40mm nominal stroke, 40mm window, no magnet, and mounting choice.
The thin Ø5 mm rod handles coaxial thrust well, but over long strokes or off-axis loads add an external guide or linear bearing to prevent side-load damage. The fixed TPU bumper only decelerates the last few millimeters; at higher speeds with real tooling mass, meter-out the exhaust or fit an external shock absorber. A plain cylinder does not hold position on air loss, so use an external stop for fail-safe load holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 0–40 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 PBJ16X40-40 FAQ
The effective stroke range is 0-40mm.
The rear M5x0.8 screw shortens the retract end only, leaving the extend end fixed. After setting your desired length, re-tighten the lock nut to prevent vibration drift. The cylinder does not hold position on air loss.
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
Request a Quote for Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.