Airtac PB Pen-type Cylinder PB12X250SU
The AirTAC Airtac PB Pen-type Cylinder PB12X250SU is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 250mm 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
- Stroke250 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 PB12X250SU
The AirTAC PB12X250SU 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 workspaces while keeping end-of-arm tooling payload low. Delivering 56.5 N of push force at 0.5 MPa, it uses an M5x0.8 air port and an M10x1.0 rod-end thread for secure load coupling.
This specific configuration includes a built-in piston magnet (-S) for position sensing and a U-type back cover providing a 90-degree perpendicular air inlet for flat plumbing. Because the 250 mm stroke exceeds the 200 mm standard maximum for a 12 mm bore, this unit is non-standard and made-to-order. It relies on fixed TPU bumpers at both ends rather than adjustable air cushions, meaning external shock absorption is recommended for high-speed tooling.
Airtac PB Pen-type Cylinder PB12X250SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X250SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 250 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 PB12X250SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×250 | 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 PB12X250SU Is Used
PCB Depaneling Router
Pushes a carrier plate into position on an electronics assembly line, where the slim 12 mm body fits between tight tooling clearances.
Carton Flap Folder
Tucks small corrugated flaps on a packaging conveyor, using the 90-degree U inlet to keep air plumbing flat against the machine frame.
Lab Sample Dispenser
Actuates a dosing probe in a wet analytical instrument, benefiting from the SUS304 stainless construction to resist mild chemical humidity.
Is the Airtac PB Pen-type Cylinder PB12X250SU the Right Cylinder?
Selecting this model means stepping up from the 10 mm bore (39.3 N push at 0.5 MPa) to gain extra thrust, or stepping down from the 16 mm bore (100.5 N push at 0.5 MPa) to save space.
When ordering, confirm the 12 mm bore, 250 mm non-standard stroke, M5x0.8 port, S magnet for reed or electronic switches, and the U 90-degree side inlet. Note that a plain cylinder drifts when air is lost or the valve is centered, as the bumpers only decelerate near stroke end; an external rod lock is required for fail-safe load holding. Furthermore, the Ø5 mm rod is built for coaxial thrust, so over this long 250 mm extension, adding an external linear bearing prevents 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 PB12X250SU FAQ
This double-acting cylinder provides 56.5 N push and 46.7 N pull at 0.5 MPa, reaching maximums of 79.1 N push and 65.4 N pull at the 0.7 MPa family limit. It operates at 0.15-0.7 MPa with speeds of 50-800 mm/s.
The U back cover provides a 90-degree perpendicular port for flat plumbing, while the S code indicates a built-in magnet compatible with AirTAC reed or electronic switches. The 250 mm stroke is made-to-order, and the fixed TPU bumpers require meter-out or external shocks for heavy high-speed loads.
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
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