Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-40S
The AirTAC PBJ Adjustable Pen-Type Cylinder PBJ16X70-40S 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 70mm stroke with a 40mm fine-adjustable window — settable from 30 to 70mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke70 mm
- Adjust window40 mm
- Effective range30–70 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 PBJ16X70-40S
The AirTAC PBJ16X70-40S is a double-acting, double-rod pen-size mini cylinder with a 40mm adjustable window. A rear adjuster screw shortens the retract end, giving an effective stroke range of 30-70mm. The extend end remains fixed.
This bore uses an M5x0.8 port and a fixed TPU bumper at each end. The built-in magnet works with reed or electronic switches. The Ø5mm rod handles coaxial thrust; add an external guide for off-axis loads.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-40S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-40S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 70 mm |
| Adjustable window | 40 mm (30–70 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 PBJ16X70-40S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×70 | 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 PBJ16X70-40S Is Used
Changeover Fixtures
Dial in the retract from 70mm down to 30mm during product changeovers, avoiding the need to swap cylinders for different part heights.
Trial Stops
Use the rear screw to set precise end-of-stroke positions for prototype testing, locking the nut once the optimal travel is found.
Variable-Depth Insertion
Adjust the retract length on the machine to tune insertion depths without ordering new hardware, perfect for light-duty press tasks.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X70-40S the Right Cylinder?
If you need less force, the 12mm bore gives 56.5N; if you need more, consider a larger profile. Remember that only the retract position is adjustable—the extend end is fixed. After setting your 30-70mm range, re-tighten the lock nut on the M5x0.8 adjuster thread to prevent vibration drift.
Confirm your ordering essentials: bore 16, nominal stroke 70, adjustable window 40, magnet S, and any mounting brackets (LB or FA). The thin Ø5mm rod is built for inline thrust, not side load, so use a linear bearing if your jig imposes lateral forces.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 30–70 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 PBJ16X70-40S FAQ
The effective stroke range is 30-70mm (nominal 70mm minus up to 40mm).
A rear screw shortens only the retract end; the extend end is fixed. Re-tighten the lock nut after setting to prevent vibration drift. The -S magnet works with reed or electronic switches for position sensing.
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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