Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10 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 125mm stroke with a 10mm fine-adjustable window — settable from 115 to 125mm, so you set the end position without changing hardware.
- BoreØ10 mm
- Nominal stroke125 mm
- Adjust window10 mm
- Effective range115–125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10
The AirTAC PBJ10X125-10 is a double-acting, adjustable-stroke pen-size mini cylinder. A rear adjuster screw with lock nut shortens the retract end, giving an effective stroke range of 115-125mm (nominal 125 minus up to 10mm). The extend end remains fixed. Force is unchanged from a standard PB of this bore, delivering 39.3N push at 0.5MPa.
This 125mm stroke exceeds the 100mm max standard for this 10mm bore, making it a non-standard or made-to-order item. The slim SUS304 stainless body and fixed TPU bumper suit tight jigs. The Ø4mm rod is for coaxial thrust; over long strokes add an external guide to prevent side-load damage. It uses an M5x0.8 port and an M4x0.7 adjuster thread.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10 Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10 |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 10 mm (115–125 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 PBJ10X125-10
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 10 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -10 | 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 PBJ10X125-10 Is Used
Variable Depth Insertion
Dial in exact insertion depths on prototype tooling without swapping cylinders. The 115-125mm range allows quick changeover for different part heights.
Trial Stop Positioning
Set precise retract endpoints during testing. Adjust the rear screw to find the optimal process position, then lock the nut for repeatable runs.
Changeover Fixtures
Adapt assembly jigs to new product variants on the fly. The field-adjustable retract saves hardware costs by covering multiple stroke lengths.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10 the Right Cylinder?
Selecting this model: a 125mm stroke on a 10mm bore is non-standard, so expect a made-to-order lead time. If you need less reach, dropping to a 16mm bore gives 100.5N push at 0.5MPa. If you need a shorter standard length, the 10mm bore offers up to 100mm. Remember only the retract end is adjustable—tighten the lock nut after setting to prevent vibration drift. Confirm your essentials: 10mm bore, 125mm stroke, 10mm window, no magnet, and no mount.
For practical use, plan for a safe working load of about 24N (60% of the 39.3N @0.5MPa figure) to account for seal friction. For vertical lifts, expect to raise about 2kg with a 2:1 safety margin. A plain PBJ does not hold position on air loss; the piston drifts. Use an external stop or rod lock for fail-safe holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 115–125 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 PBJ10X125-10 FAQ
The effective stroke range is 115-125mm. Force equals a standard PB 10mm bore: 39.3N push and 33N pull at 0.5MPa; 55N push and 46.2N pull at 0.7MPa. The maximum operating pressure is 0.7MPa.
The rear M4x0.7 adjuster screw shortens only the retract end; the extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. A plain PBJ does not hold its load on air loss—the piston drifts, so use an external rod lock 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 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 PBJ10X125-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.