Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-75S
The AirTAC PBJ Adjustable Pen-Type Cylinder PBJ16X125-75S is a double-acting, double-rod pen-size mini cylinder whose rear rod carries a stroke adjuster. On a Ø16mm bore it gives a nominal 125mm stroke with a 75mm fine-adjustable window — settable from 50 to 125mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke125 mm
- Adjust window75 mm
- Effective range50–125 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 PBJ16X125-75S
The AirTAC PBJ16X125-75S is a double-acting, double-rod pen-size mini cylinder featuring a 75mm adjustable window. A rear adjuster screw (M5x0.8 thread) shortens the retract end, yielding an effective stroke range of 50-125mm. The extend end remains fixed. The integrated -S magnet works with reed or electronic switches.
Built with a SUS304 stainless rod and barrel, this slim 16mm bore cylinder saves space in tight jigs. It uses an M5x0.8 air port and an M10x1.0 rod-end thread. A fixed TPU bumper cushions each end.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-75S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-75S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 75 mm (50–125 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 90.7 N | 90.7 N |
| 0.7 MPa (max) | 126.9 N | 126.9 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 PBJ16X125-75S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -75 | 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 PBJ16X125-75S Is Used
Variable-Depth Insertion
Dial in precise pressing depths on the fly. The 50-125mm retract window lets you test multiple insertion heights without machining new hard stops.
Quick Changeover Fixtures
Swap product variants on a packaging line rapidly. Turn the rear M5x0.8 adjuster to match the new part height and lock the nut for immediate production.
Trial Stop Positioning
Set temporary end-of-stroke limits during prototype tooling. Fine-tune the retract distance in seconds to find the exact 50-125mm operating point.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X125-75S the Right Cylinder?
Remember that only the retract position is field-settable—the extend end is fixed. After dialing in your 50-125mm range, securely re-tighten the lock nut to prevent vibration drift.
Confirm your ordering essentials: 16mm bore, 125mm nominal stroke, 75mm window, built-in S magnet, and your preferred mounting option (blank, LB, or FA). The thin Ø5mm rod handles coaxial thrust well but requires a linear bearing for side loads.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 50–125 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 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 PBJ16X125-75S FAQ
The effective stroke range is 50-125mm (125mm nominal minus a 75mm window).
A 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 built-in -S magnet allows position sensing with either reed or electronic switches.
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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