Airtac PB Pen-type Cylinder PB12X40SU
The AirTAC Airtac PB Pen-type Cylinder PB12X40SU is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 40mm 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
- Stroke40 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 PB12X40SU
The AirTAC PB12X40SU is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel round barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while saving valuable space on tight jigs and light end-of-arm tooling. Delivering 56.5 N of push and 46.7 N of pull at 0.5 MPa, this model operates at speeds from 50-800 mm/s.
This specific configuration includes a built-in piston magnet (-S) for position sensing using AirTAC reed or electronic switches. The U back cover provides a 90-degree perpendicular air inlet for flat plumbing, and the M5x0.8 port matches the 12 mm bore standard. Impact absorption at stroke ends relies on a fixed TPU bumper, which decelerates the last few millimeters of travel but is not adjustable.
Airtac PB Pen-type Cylinder PB12X40SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X40SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 40 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 PB12X40SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 PB12X40SU Is Used
PCB Depaneling Router
Provides the precise 56.5 N extension thrust to actuate small clamping fingers on a depaneling fixture, securely holding circuit boards during the routing cut.
Blister Pack Sealing
Drives a lightweight heated platen down onto blister packaging materials, utilizing the 90-degree U inlet to keep air hoses flush against the machine frame in a tight cell.
Micro-Component Sorting
Actuates a tiny diverter gate on a high-speed vibratory bowl feeder, using the integrated S magnet to trigger an electronic switch and confirm part routing.
Is the Airtac PB Pen-type Cylinder PB12X40SU the Right Cylinder?
When sizing this 12 mm bore actuator, consider stepping down to the 10 mm bore (39.3 N push at 0.5 MPa) for lighter duties, or up to the 16 mm bore (100.5 N push at 0.5 MPa) if you need substantially more thrust.
Keep in mind that a plain double-acting cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift, so an external stop or rod lock is required for fail-safe holding. Because the Ø5 mm rod is designed for coaxial thrust, avoid side loads or add an external linear guide over long strokes. Confirm your ordering essentials: 12 mm bore, 40 mm stroke, M5x0.8 port, S magnet, U 90-degree inlet, and any LB, FA, or CJ mounting brackets.
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 PB12X40SU FAQ
The 12 mm bore double-acting rod yields 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. The speed range is 50-800 mm/s, operating pressure is 0.15-0.7 MPa, and proof pressure is 1.2 MPa.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters; it is not field-adjustable, so for high-speed or heavy tooling mass, meter-out the exhaust or add an external shock absorber. Additionally, it does not hold its load on air loss or valve centering—the piston drifts, 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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