Airtac PB Pen-type Cylinder PB12X55SU
The AirTAC Airtac PB Pen-type Cylinder PB12X55SU is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 55mm 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.
- BoreØ12 mm
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB12X55SU
The AirTAC PB12X55SU is a JIS pen-size, double-acting single-rod mini cylinder engineered for tight spaces. It provides a theoretical push of 56.5 N and pull of 46.7 N at 0.5 MPa, driven through an M5x0.8 port. The slim SUS304 stainless barrel and piston rod resist moisture in washdown or mildly corrosive settings, keeping end-of-arm tooling light. A built-in magnet (-S) enables position feedback.
This 12 mm bore, 55 mm stroke variant features a U-type 90-degree side air inlet for flat plumbing along a machine frame. Instead of adjustable air cushions, the covers house fixed TPU bumpers that absorb impact during the final millimeters of travel. For high cycling speeds with attached tooling mass, metering out the exhaust or adding an external shock absorber prevents the bumper from bottoming out.
Airtac PB Pen-type Cylinder PB12X55SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X55SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 55 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 56.5 N | 46.7 N |
| 0.7 MPa (max) | 79.1 N | 65.4 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 PB12X55SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×55 | 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 PB12X55SU Is Used
PCB Depaneling Router
Advances a cutting tool guide on an electronics assembly line, using the 56.5 N extend force to hold boards steady during routing without stressing the delicate substrate.
Blister Pack Sealing Jig
Cycles a small heated platen in a compact packaging machine, where the U 90-degree side inlet keeps pneumatic plumbing flush against the vertical frame to save deck space.
Lab Dispense Valve Actuation
Toggles a precision metering valve for adhesive dosing, relying on the -S magnet and an electronic switch to confirm stroke end for consistent shot volumes.
Is the Airtac PB Pen-type Cylinder PB12X55SU the Right Cylinder?
When sizing this model, the 56.5 N push at 0.5 MPa translates to a safe working load of roughly 34 N (about 60% capacity for smooth travel). Vertically, it lifts approximately 2.9 kg with a 2:1 safety margin. If you need less force, the 10 mm bore offers 39.3 N push; stepping up to the 16 mm bore yields 100.5 N push. The Ø5 mm piston rod handles coaxial thrust well, but over long strokes or off-axis loads, add an external linear guide to prevent binding. Note that a standard PB cylinder drifts when air is lost or the valve is centered—use an external rod lock if the application requires fail-safe position holding. Confirm your ordering essentials: 12 mm bore, 55 mm stroke, M5x0.8 port, -S magnet, and U side inlet.
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 PB12X55SU FAQ
This double-acting cylinder generates a push of 56.5 N and a pull of 46.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, it produces 79.1 N push and 65.4 N pull. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s, with a proof pressure of 1.2 MPa.
It uses fixed TPU bumpers at both ends to decelerate the piston over the last few millimeters; these are not adjustable, so high-speed loads may need external shock absorption. The integrated -S magnet allows you to mount AirTAC reed or electronic switches for precise end-of-stroke detection.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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