Airtac PB Pen-type Cylinder PB12X120SU
The AirTAC Airtac PB Pen-type Cylinder PB12X120SU is a double-acting pen-size (mini) air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
- 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 PB Pen-type Cylinder PB12X120SU
The AirTAC PB12X120SU is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a 12mm bore and a 120mm stroke, generating 56.5 N of push force at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod provide excellent durability in damp or mildly corrosive environments while keeping end-of-arm tooling weight to an absolute minimum.
This specific configuration includes a built-in piston magnet (-S) for position sensing and a U-type back cover that accepts a 90-degree side air inlet for flat plumbing. Air connects via an M5x0.8 port, and the rod-end features an M10x1.0 thread for secure load coupling. Because the rod is a slender 5mm diameter, maintaining coaxial alignment is critical over this 120mm stroke to prevent side-loading wear.
Airtac PB Pen-type Cylinder PB12X120SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X120SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 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 (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 PB12X120SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | 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 PB12X120SU Is Used
PCB Depaneling Router
Actuates a tooling pin on an automated routing fixture, utilizing the 90-degree side inlet to keep pneumatic plumbing flush against the machine frame in a tight electronics assembly cell.
Blister Pack Sealing Jig
Provides the 56.5 N extend force needed to hold a sealing head closed against thin plastic film, with the S magnet confirming closure to the PLC before heat is applied.
Lab Dispense Valve
Drives a micro-dispense nozzle for reagent application, where the SUS304 construction resists ambient humidity and the compact body fits inside crowded fume hoods.
Is the Airtac PB Pen-type Cylinder PB12X120SU the Right Cylinder?
When sizing this actuator, stepping down to a 10mm bore yields 39.3 N of push at 0.5 MPa, while stepping up to a 16mm bore provides 100.5 N, allowing you to tune payload capacity precisely.
Remember that a standard pen-type cylinder drifts when air pressure is lost or the valve is centered; the end bumpers only decelerate the piston near stroke end and do not lock the load. If your process requires fail-safe position holding, you must integrate an external stop or rod lock. Confirm your ordering essentials: 12mm bore, 120mm stroke, M5x0.8 port, S magnet, U side inlet, and your required mounting bracket.
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 PB12X120SU FAQ
At 0.5 MPa, the push force is 56.5 N and the pull force is 46.7 N. At the maximum operating pressure of 0.7 MPa, the push force is 79.1 N and the pull force is 65.4 N. The operating pressure range is 0.15-0.7 MPa, with a speed range of 50-800 mm/s.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters of travel; it is not adjustable, so for high-speed or heavy tooling mass you should meter-out the exhaust or add an external shock absorber. The cylinder does not hold its load if air is lost, as the bumper is not a lock or brake.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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