Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-20
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-20 is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø12mm bore it gives a nominal 100mm stroke with a 20mm fine-adjustable window — settable from 80 to 100mm, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke100 mm
- Adjust window20 mm
- Effective range80–100 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 PBJ12X100-20
The AirTAC PBJ12X100-20 is a double-acting, double-rod pen-size mini cylinder with a 12 mm bore and a 100 mm nominal stroke. A rear M5x0.8 adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 80 to 100 mm. You can fine-tune the position directly on the machine without ordering new hardware. The extend end remains fixed. The air port is M5x0.8, and the rod-end thread is M10x1.0.
The slim body uses a SUS304 stainless rod and barrel. A fixed TPU bumper at each end decelerates the last few millimeters of travel. Because the bumper is not a lock, the piston drifts if air pressure drops; use an external stop for fail-safe load holding. The thin Ø5 mm rod handles coaxial thrust, so add an external guide for off-axis loads over this long stroke.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-20 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-20 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 20 mm (80–100 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 46.7 N | 46.7 N |
| 0.7 MPa (max) | 65.4 N | 65.4 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 PBJ12X100-20
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×100 | 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 PBJ12X100-20 Is Used
Changeover Fixtures
Dial in the retract stop from 80 to 100 mm during product changeovers without machining new stop collars.
Trial Insertion Stops
Set variable insertion depths on prototype builds by turning the rear M5x0.8 screw, then lock it down.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-20 the Right Cylinder?
Size both ways against this 12 mm bore. Dropping to a 10 mm bore drops the 0.5 MPa push force to 39.3 N, while stepping up to a 16 mm bore raises it to 100.5 N. Remember the rear screw only adjusts the retract end; the extend position is fixed. Always re-tighten the lock nut after setting the stroke to prevent vibration drift. Confirm your ordering essentials: 12 mm bore, 100 mm stroke, 20 mm adjuster window, magnet option, and mounting style.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 80–100 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 PBJ12X100-20 FAQ
The effective stroke range is 80 to 100 mm. The air port is M5x0.8, the rod-end thread is M10x1.0, and the adjuster thread is M5x0.8.
The rear screw shortens only the retract end; the extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. The cylinder does not hold position on air loss, as the piston drifts and the fixed TPU bumper only decelerates near the stroke end.
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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