Airtac PB Pen-type Cylinder PB12X20SU
The AirTAC Airtac PB Pen-type Cylinder PB12X20SU is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 20mm 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
- Stroke20 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 PB12X20SU
The AirTAC PB12X20SU is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It features a slim SUS304 stainless steel barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while keeping weight low for end-of-arm tooling. Delivering 56.5 N of push force at 0.5 MPa, this 12 mm bore unit utilizes an M5x0.8 air port and a 90-degree side inlet for flat plumbing.
This model includes a built-in piston magnet (-S) for position sensing with AirTAC reed or electronic switches. It relies on a fixed TPU bumper at each end to decelerate the stroke, meaning it is not field-adjustable. For high-speed cycles with real tooling mass, metering out the exhaust or adding an external shock absorber is recommended to prevent bottoming out.
Airtac PB Pen-type Cylinder PB12X20SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X20SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 20 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 PB12X20SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 PB12X20SU Is Used
PCB Depaneling Jig
Actuates a small cutting blade or clamping arm in tight electronics assembly cells where the 20 mm stroke and slim profile prevent interference with adjacent fixtures.
Carton Flap Folder
Tucks small corrugated box flaps at high speed, utilizing the 56.5 N push force to cleanly fold light packaging materials without stalling.
Lab Sample Ejector
Pushes processed vials out of a testing carousel, benefiting from the SUS304 stainless construction to withstand humid laboratory conditions.
Is the Airtac PB Pen-type Cylinder PB12X20SU the Right Cylinder?
If you need to step down, the 10 mm bore provides 39.3 N of push at 0.5 MPa; stepping up to the 16 mm bore yields 100.5 N. This specific configuration includes the U-type back cover for perpendicular plumbing and the S magnet for sensing. Confirm your requirements for bore, stroke, port size, and mounting brackets (LB, FA, or CJ) when ordering.
Note that a plain pneumatic body like this does not hold its position if air pressure drops or the valve is centered, as the piston will drift. The fixed bumper only decelerates the rod near the stroke end rather than acting as a mechanical lock. If your application requires fail-safe load holding, you must incorporate an external stop or rod lock.
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 PB12X20SU 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 of 50-800 mm/s.
The U back cover provides a 90-degree perpendicular air inlet for flat plumbing in tight spaces. The cylinder uses a fixed TPU bumper at both ends to decelerate the piston over the last few millimeters of travel; it is not an adjustable air cushion. If moving heavy tooling at high speed, you should add an external shock absorber.
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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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