Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-50S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-50S 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 50mm fine-adjustable window — settable from 50 to 100mm, so you set the end position without changing hardware.
- BoreØ12 mm
- Nominal stroke100 mm
- Adjust window50 mm
- Effective range50–100 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 PBJ12X100-50S
The AirTAC PBJ12X100-50S is a double-acting, double-rod pen-size mini cylinder with a 50mm adjustable window. A rear M5x0.8 adjuster screw and lock nut shorten the retract end, giving an effective stroke range of 50-100mm without changing hardware. The extend end remains fixed.
Built with a SUS304 stainless barrel and a slim Ø5mm rod, it saves space in tight jigs. The M5x0.8 air port keeps the envelope small. The fixed TPU bumper decelerates the last few millimeters of travel.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-50S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-50S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 50 mm (50–100 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 PBJ12X100-50S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×100 | Nominal stroke length in mm. |
| -50 | 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 PBJ12X100-50S Is Used
Changeover Fixtures
Dial in the retract stop from 50 to 100mm during product changeovers. The rear screw lets operators set new depths instantly without swapping cylinders.
Trial Insertion Stops
Set precise press-in depths for pins or plugs. Adjust the stroke on the machine to find the perfect insertion point, then lock the nut.
Variable Depth Probing
Use the 50mm window to test sensor contact or part height across different batches. The fixed TPU bumper protects the probe at the extend end.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ12X100-50S the Right Cylinder?
Use this model when your fixture requires precise field-set positioning within the 50-100mm range. Remember that only the back position is tunable; the extend end is fixed.
After setting your length, re-tighten the lock nut so vibration does not drift the screw. The -S suffix means a built-in piston magnet for position sensing with reed or electronic switches. Confirm your ordering essentials: bore, stroke, window, magnet, and mounting accessories.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 50–100 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 PBJ12X100-50S FAQ
The effective stroke range is 50-100mm. Adjusting the stroke does not alter these forces.
The rear M5x0.8 screw shortens only the retract end; the extend end is fixed. Re-tighten the lock nut after setting to prevent vibration drift. A plain cylinder does not hold position on air loss, as the piston drifts; use an external stop for fail-safe holding.
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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