Airtac PB Pen-type Cylinder PB16X125SU
The AirTAC Airtac PB Pen-type Cylinder PB16X125SU is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 125mm stroke. Its slim round barrel and back cover are stainless steel, the M5×0.8 ports keep plumbing compact, and the fast, low-friction piston suits high-cycle small-part handling.
- BoreØ16 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X125SU
The AirTAC PB16X125SU is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency motion. It features a 16mm bore and a 125mm stroke, generating 100.5 N of push and 90.7 N of pull at 0.5 MPa. The slim SUS304 stainless barrel and piston rod provide corrosion resistance for damp production zones while keeping end-of-arm tooling exceptionally light. This variant includes a built-in piston magnet (-S) for position sensing and a U-type back cover providing a 90-degree side air inlet for flat plumbing against machine frames.
Air enters via the M5x0.8 port, driving the 5mm rod with an M10x1.0 end thread at speeds from 50 to 800 mm/s. End-of-stroke deceleration relies on fixed TPU bumpers rather than adjustable air cushions. Because the rod is only 5mm thick, it is built for coaxial thrust over this 125mm length; applying lateral load risks bending, so an external guide bearing is advised for offset tooling.
Airtac PB Pen-type Cylinder PB16X125SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X125SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| 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 300 mm |
Specifications follow the official AirTAC PB pen-size datasheet. Piston rod and barrel are stainless steel. Confirm bore, stroke and back-cover option against the product label before installation.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 N |
Values are taken from the AirTAC PB thrust table. Because pull acts on the rod-side annular area, pull force is always lower than push. Actual usable force is reduced by friction — size with a margin.
Model Code: Airtac PB Pen-type Cylinder PB16X125SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| CB / U / R | Back cover: CB double clevis, U 90° side inlet, R axial inlet (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PSB (single-acting push), PTB (single-acting pull), PBD (double rod), PBJ (adjustable stroke), PBR (front-mount).
Where the Airtac PB Pen-type Cylinder PB16X125SU Is Used
PCB Depaneling Router
Actuates a tooling pin on an automated depaneling fixture, using the 100.5 N push to hold circuit boards firmly against a routing fence during milling.
Carton Flap Folder
Tucks minor flaps on a continuous carton sealing line, where the compact stainless body resists dusty cardboard debris and the U-side inlet keeps plumbing flush.
Sorter Diverter Gate
Pivots a lightweight aluminum deflector plate to route small plastic parts on a packaging conveyor, benefiting from the 125mm stroke to clear the belt path.
Is the Airtac PB Pen-type Cylinder PB16X125SU the Right Cylinder?
Selecting this 16mm bore provides the highest standard thrust in the PB family, pushing 100.5 N at 0.5 MPa. If you need slightly less force, stepping down to the 12mm bore yields 56.5 N of push. Plan for a safe working load of about 60 N, which accounts for roughly 60% of the theoretical 0.5 MPa push figure to overcome seal friction and ensure smooth travel. For vertical lifts, this translates to safely raising around 5.1 kg with a 2:1 safety margin.
When ordering, confirm the 125mm stroke, the M5x0.8 port size, the integrated magnet for AirTAC reed or electronic switches, and the U-type 90-degree side inlet. Note that a plain PB cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; applications requiring fail-safe positioning need an external rod lock or mechanical stop.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Slim pen body vs. a standard round cylinder
- ✓ Back cover: CB / U / R inlet direction
- ✓ Magnet (S) for sensors?
- ✓ Mounting: LB / FA / CJ or front thread
- ✓ 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 Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
- check Fit dust caps to ports during long-term storage.
- check Installation by qualified personnel per AirTAC docs.
Airtac PB Pen-type Cylinder PB16X125SU FAQ
This double-acting cylinder delivers 100.5 N push and 90.7 N pull at 0.5 MPa, with a maximum thrust of 140.7 N push and 126.9 N pull at the 0.7 MPa pressure limit. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s.
No, the cushioning consists of fixed TPU bumpers at each end that only decelerate the last few millimeters of travel and cannot be field adjusted. Additionally, the cylinder does not hold position if air is lost; the piston will drift, so an external shock absorber or rod lock is required for fail-safe holding.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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