Airtac PB Pen-type Cylinder PB12X50U
The AirTAC Airtac PB Pen-type Cylinder PB12X50U is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 50mm 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
- Stroke50 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 PB12X50U
The AirTAC PB12X50U is a double-acting JIS pen-size mini cylinder engineered for compact automation. It features a 12mm bore and 50mm stroke, generating 56.5 N of push force at 0.5 MPa. The slim SUS304 stainless barrel and piston rod provide reliable corrosion resistance in damp environments while keeping weight low for end-of-arm tooling. This model uses an M5x0.8 air port and a 5mm rod with an M10x1.0 rod-end thread.
Configured with a U-type back cover, it offers a 90-degree side air inlet for flat plumbing in confined spaces. The cylinder relies on a fixed TPU bumper at each end to decelerate the piston over the final few millimeters of travel. Because this bumper is not adjustable, metering out the exhaust or adding an external shock absorber is recommended when moving heavy tooling at higher speeds.
Airtac PB Pen-type Cylinder PB12X50U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X50U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 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 PB12X50U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×50 | 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 PB12X50U Is Used
Carton Flap Folder
Tucks minor flaps on small pharmaceutical cartons on a high-speed line, where the U-type side inlet keeps plumbing flush against the machine frame.
Connector Seating Press
Applies downward coaxial thrust to seat delicate electronic headers, taking advantage of the slim 12mm body to fit between dense PCB tooling.
Is the Airtac PB Pen-type Cylinder PB12X50U the Right Cylinder?
When sizing this 12mm bore actuator, consider stepping down to the 10mm bore (39.3 N push at 0.5 MPa) for lighter tasks, or up to the 16mm bore (100.5 N push at 0.5 MPa) if you need substantially more thrust.
Note that a plain PB cylinder drifts when air pressure is lost or the valve is centered, as the internal bumper only decelerates near stroke end rather than locking the rod. For position holding without live pressure, an external stop or rod lock is required. Confirm your ordering essentials: 12mm bore, 50mm stroke, M5x0.8 port, U 90-degree side inlet, and no sensor magnet.
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 PB12X50U FAQ
The PB12X50U generates 56.5 N push and 46.7 N pull at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, it yields 79.1 N push and 65.4 N pull. It operates between 0.15-0.7 MPa, runs at speeds of 50-800 mm/s, and uses an M5x0.8 port with a 5mm rod.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters; it is not adjustable, so external shock absorbers may be needed for heavy masses. Additionally, it does not hold its load on air loss or valve centering—the piston will drift, requiring an external rod lock for fail-safe holding.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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