Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 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 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
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40
The AirTAC PBJ16X40-40 is a double-acting, single-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. Output force remains identical to a standard PB body of the same bore, delivering about 100.5 N push at 0.5 MPa. 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. Plan for a safe working load of roughly 60 N, which accounts for seal friction and smooth travel at 0.5 MPa. 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 |
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 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.
Variable Depth Pressing
Adjust downward push depth for varying part profiles while maintaining 100.5 N of thrust at 0.5 MPa.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X40-40 the Right Cylinder?
For sizing, the adjacent bore down delivers 56.5 N push @0.5 MPa, while this 16mm bore provides 100.5 N push @0.5 MPa. 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 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 PBJ16X40-40 FAQ
The effective stroke range is 0-40mm. Force is identical to a standard PB 16mm bore: 100.5 N push and 90.7 N pull at 0.5 MPa, or 140.7 N push and 126.9 N pull at the 0.7 MPa maximum.
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 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 PBJ16X40-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.