Airtac PB Pen-type Cylinder PB16X120SU
The AirTAC Airtac PB Pen-type Cylinder PB16X120SU is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 120mm 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
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X120SU
The AirTAC PB16X120SU is a JIS pen-size double-acting single-rod mini cylinder, delivering 100.5 N of push and 90.7 N of pull at 0.5 MPa. Its slim SUS304 stainless round barrel and screwed-in covers provide excellent durability in damp or mildly corrosive environments, while keeping weight low for end-of-arm tooling. This specific configuration includes a built-in piston magnet for position sensing and a U-type back cover featuring a 90-degree side air inlet for flat plumbing.
Air enters via an M5x0.8 port, driving the Ø5 mm rod at speeds of 50-800 mm/s. The unit relies on a fixed TPU bumper at each end to decelerate the piston over the last few millimeters of travel. Because this bumper is not adjustable, high-speed cycles with heavy tooling require metering out the exhaust or adding an external shock absorber to prevent bottoming out.
Airtac PB Pen-type Cylinder PB16X120SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X120SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 120 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 PB16X120SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×120 | 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 PB16X120SU Is Used
PCB Depaneling Router
Pushes a light carrier fixture forward onto a routing bit guide pin, using the 90-degree side inlet to keep air lines flush against the machine frame.
Carton Flap Folder
Extends a small arm to tuck minor flaps on a packing line, relying on the built-in magnet to trigger an electronic switch for fold confirmation.
Belt Divert Gate
Actuates a lightweight sorting flap to redirect small parcels, taking advantage of the SUS304 barrel to resist humidity in washdown zones.
Is the Airtac PB Pen-type Cylinder PB16X120SU the Right Cylinder?
Selecting this 16 mm bore provides the highest standard force in the PB family. If your application requires less push, the next size down is the 12 mm bore, which yields 56.5 N at 0.5 MPa. Since 16 mm is the largest available diameter, stepping up requires switching to a different cylinder family entirely. For this 120 mm stroke, plan for a safe working load of roughly 60 N—about 60% of the 0.5 MPa theoretical force—to account for seal friction and smooth travel. This equates to lifting about 5.1 kg vertically with a 2:1 safety margin.
When ordering, confirm the 16 mm bore, 120 mm stroke, M5x0.8 port, S magnet, and U 90-degree side inlet. Note that a plain PB-type cylinder does not hold its load if air pressure is lost or the valve is centered; the piston will drift, and the bumper only decelerates near the stroke end. For fail-safe holding, an external stop or rod lock is required. Additionally, the thin Ø5 mm rod is designed for coaxial thrust, so over this 120 mm stroke or under off-axis loads, adding an external guide or linear bearing is recommended to prevent side-load damage.
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 PB16X120SU FAQ
This double-acting cylinder has a push force of 100.5 N and a pull force of 90.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push is 140.7 N and the pull is 126.9 N. It operates between 0.15-0.7 MPa, runs at 50-800 mm/s, and has a proof pressure of 1.2 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper at each end only decelerates the piston near the end of stroke; it does not act as a lock or brake. For vertical loads, you must add an external rod lock or mechanical stop.
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