Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10S 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 PBJ10X125-10S
The AirTAC PBJ10X125-10S is a double-acting, adjustable-stroke pen-size mini cylinder with a built-in magnet. A rear adjuster screw shortens the retract end, giving an effective stroke range of 115-125mm. The extend end remains fixed. Output force matches a standard PB body, delivering about 39.3N push at 0.5MPa.
This unit features a slim SUS304 stainless build and a fixed TPU bumper at each end. The 125mm length is non-standard for this 10mm bore, making it a made-to-order item. The Ø4mm piston rod is built for coaxial thrust; over long strokes add an external guide to prevent side-load wear. A plain cylinder does not hold position on air loss, so fit an external stop for fail-safe holding.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10S |
|---|---|
| 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 PBJ10X125-10S
| 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 PBJ10X125-10S Is Used
Changeover Fixtures
Dial in the exact retract stop during product changeovers without machining new pins or ordering different hardware.
Trial Stops
Set temporary end positions for prototype testing, letting engineers find the exact stroke distance on the bench.
Variable Depth Insert
Adjust insertion depth on light tooling; the 2kg vertical lift capacity suits delicate vertical assembly tasks.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ10X125-10S the Right Cylinder?
Confirm the essentials before ordering: 10mm bore, 125mm nominal stroke, 10mm window, -S magnet, and mounting. Note that 125mm exceeds the 100mm max standard stroke for this bore. If a shorter fixed length works, choose a standard PB; if equal force both ways is needed, look at PBD; for a front bolt mount, use PBR.
When sizing, a 12mm bore gives 56.5N push while an 8mm bore (if available) offers less. Only the retract position is adjustable here, so set your distance and re-tighten the M4x0.7 lock nut to prevent vibration drift. Plan for a safe working load of about 24N (roughly 60% of the 39.3N rated figure at 0.5MPa) to account for seal friction.
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 PBJ10X125-10S FAQ
The effective stroke range is 115-125mm. At 0.5MPa the push force is 39.3N and pull is 33N. At the maximum 0.7MPa pressure, push is 55N and pull is 46.2N. The air port is M5x0.8 and the rod-end thread is M8x1.0.
The rear adjuster screw shortens the retract end only; the extend end is fixed. You must re-tighten the lock nut after setting to prevent vibration drift. The built-in magnet works with AirTAC reed or electronic switches. The fixed TPU bumper decelerates the last few mm; at higher speeds with real mass, meter-out the exhaust or add an external shock absorber.
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 PBJ10X125-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.