Airtac PB Pen-type Cylinder PB12X25U
The AirTAC Airtac PB Pen-type Cylinder PB12X25U is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 25mm 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
- Stroke25 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 PB12X25U
The AirTAC PB12X25U is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It delivers 56.5 N of push and 46.7 N of pull at 0.5 MPa, utilizing a slim SUS304 stainless steel barrel and piston rod to resist damp or mildly corrosive industrial environments. The U suffix indicates a perpendicular 90-degree side air inlet, allowing flat plumbing in confined spaces.
This model features a 5 mm rod with an M10x1.0 rod-end thread and an M5x0.8 port. It relies on fixed TPU elastic bumpers at both ends 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 real tooling mass at higher speeds.
Airtac PB Pen-type Cylinder PB12X25U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X25U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 25 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 PB12X25U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 PB12X25U Is Used
PCB Depaneling Jig
Drives a low-profile cutter blade in a tight electronics assembly fixture, utilizing the 90-degree side inlet to keep pneumatic hoses flush against the machine frame.
Carton Flap Folder
Tucks small corrugated box flaps at high speed, where the fixed TPU bumper absorbs the end-of-stroke impact without requiring manual cushion adjustment.
Pick-and-Place Ejector
Pushes lightweight plastic components out of a mold cavity on an end-of-arm tooling plate, benefiting from the SUS304 rod's resistance to ambient factory humidity.
Is the Airtac PB Pen-type Cylinder PB12X25U the Right Cylinder?
If you need less force, the neighboring Ø10 bore provides 39.3 N of push at 0.5 MPa; stepping up to the Ø16 bore yields 100.5 N for heavier payloads.
Note that a plain PB cylinder drifts when air pressure is lost or the valve is centered, as the bumpers only decelerate near stroke end rather than locking the load. An external stop or rod lock is required for fail-safe holding. Confirm your ordering essentials: 12 mm bore, 25 mm stroke, M5x0.8 port, no sensor magnet, and the U 90-degree side inlet.
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 PB12X25U FAQ
At 0.5 MPa, this 12 mm bore double-acting cylinder provides 56.5 N of push (extend) and 46.7 N of pull (retract). 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.
The U suffix denotes a 90-degree perpendicular side air inlet for flat plumbing in space-constrained jigs. Deceleration is handled by fixed TPU elastic bumpers at both ends, which absorb impact over the final few millimeters. They are not field-adjustable, so for high-speed or heavy tooling mass, you should meter-out the exhaust or add an external shock absorber.
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 PB12X25U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.