Airtac PB Pen-type Cylinder PB12X120U
The AirTAC Airtac PB Pen-type Cylinder PB12X120U 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 PB12X120U
The AirTAC PB12X120U is a JIS pen-size double-acting single-rod mini cylinder engineered for compact automation. It provides a theoretical push of 56.5 N and a pull of 46.7 N at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod offer reliable corrosion resistance in damp production areas, keeping end-of-arm tooling weight low. This specific configuration features a U back cover, orienting the M5x0.8 air inlet at a 90-degree angle for flat plumbing in space-constrained machinery.
With a 120 mm stroke and a 5 mm piston rod, this model operates at speeds from 50 to 800 mm/s. It relies on a fixed TPU bumper at each end to decelerate the piston over the final few millimeters of travel. Because the bumper is not adjustable, high-speed cycling with heavy tooling may require metering out the exhaust or adding an external shock absorber. The rod-end thread is M10x1.0 for secure load coupling.
Airtac PB Pen-type Cylinder PB12X120U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X120U |
|---|---|
| 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 PB12X120U
| 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 PB12X120U Is Used
PCB Depaneling Router
Advances a cutting tool guide along a 120 mm path to singulate printed circuit boards, utilizing the 90-degree side inlet to keep pneumatic tubing flush against the machine frame.
Carton Flap Folder
Tucks minor flaps on small packaging lines, where the 56.5 N push force at 0.5 MPa easily overcomes light cardboard resistance without crushing the carton structure.
Micro-Array Pin Transfer
Drives a precision pin block to deposit adhesive dots across a 120 mm span, benefiting from the SUS304 stainless construction to resist moisture in cleanroom environments.
Is the Airtac PB Pen-type Cylinder PB12X120U the Right Cylinder?
If your application requires less force, the neighboring 10 mm bore provides 39.3 N of push at 0.5 MPa. Stepping up to the 16 mm bore yields 100.5 N of push for heavier payloads. Remember that a plain cylinder drifts when air is lost or the valve is centered, so an external rod lock is necessary for fail-safe position holding.
To order this configuration correctly, confirm the 12 mm bore, 120 mm stroke, and the U perpendicular 90-degree side inlet. This unit does not include a sensor magnet. The thin 5 mm rod is designed strictly for coaxial thrust, so over this 120 mm stroke, incorporate an external linear guide 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 PB12X120U FAQ
The PB12X120U generates a push force of 56.5 N and a pull force of 46.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push is 79.1 N and the pull is 65.4 N. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa and 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; it is not adjustable and not a locking brake. If cycling fast with real tooling mass, you should meter-out the exhaust or add an external shock absorber. Furthermore, the piston will drift if air pressure is lost, so an external stop is required to hold a load safely.
Authorized Export Seller
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
Request a Quote for Airtac PB Pen-type Cylinder PB12X120U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.