Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40 is a double-acting pen-size mini cylinder with a rear adjuster screw that shortens the retract end of the stroke. On a Ø10mm bore it gives a nominal 80mm stroke with a 40mm fine-adjustable window — settable from 40 to 80mm, so you set the end position without changing hardware.
- BoreØ10 mm
- Nominal stroke80 mm
- Adjust window40 mm
- Effective range40–80 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40
The AirTAC PBJ10X80-40 is a double-acting, single-rod pen-size mini cylinder with a 40mm adjustable window. A rear adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 40mm to 80mm. The extend end remains fixed. Output force equals a standard PB of the same 10mm bore, providing 39.3N push and 33N pull at 0.5MPa, with no penalty for adjusting the length.
The slim body uses a SUS304 stainless rod and barrel, fitting tight jigs and light end-of-arm tooling. It features an M5x0.8 port, an M8x1.0 rod-end thread, and an M4x0.7 adjuster thread. A fixed TPU bumper cushions each end. Plan for a safe working load of about 24N (roughly 60% of the 0.5MPa push force), which can lift about 2kg vertically with a 2:1 margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 40 mm (40–80 mm) |
| Adjuster thread | M4×0.7 |
| 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 100 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 (Ø10mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 39.3 N | 33.0 N |
| 0.7 MPa (max) | 55.0 N | 46.2 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 PBJ10X80-40
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 10 | Bore size in mm. |
| ×80 | 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 PBJ10X80-40 Is Used
Changeover Fixtures
Dial in the exact retract length from 40 to 80mm during product changeovers without machining new stop collars or ordering different cylinders.
Trial Stops
Set precise retract positions for test probes or sensing heads, locking the M4x0.7 adjuster nut once the optimal distance is found.
Variable Depth Press
Control insertion depth on light assembly tooling, adjusting the back position to accommodate different stack heights or material thicknesses.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X80-40 the Right Cylinder?
For context, sizing down to a smaller bore or up to a 12mm bore changes the 0.5MPa push force to 56.5N, while this 10mm bore delivers 39.3N. Remember that only the retract position is tunable; the extend end is fixed. After setting your 40-80mm range, re-tighten the lock nut because vibration can drift an unlocked screw. Confirm your ordering essentials: 10mm bore, 80mm nominal stroke, 40mm window, and mounting (LB or FA).
The thin Ø4mm piston rod handles coaxial thrust well, but over long strokes or off-axis loads you should add an external guide or linear bearing to prevent side load. Additionally, the fixed TPU bumper only decelerates the last few millimeters. At higher speeds with real tooling mass, it can bottom out, so meter-out the exhaust or fit an external shock absorber. A plain cylinder does not hold position on air loss; use an external stop for fail-safe load holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 40–80 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 PBJ10X80-40 FAQ
The effective stroke range is 40mm to 80mm (80mm nominal minus the 40mm window). Force is identical to a standard PB 10mm bore double-acting cylinder: 39.3N push and 33N pull at 0.5MPa, or 55N push and 46.2N pull at the 0.7MPa maximum.
The rear screw shortens the retract end only, while the extend end remains fixed. After setting your desired position, you must re-tighten the lock nut to prevent vibration drift. This mechanism does not include a sensor magnet.
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Related AirTAC PBJ Pen-Size Cylinders
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