Airtac PB Pen-type Cylinder PB12X25SR
The AirTAC Airtac PB Pen-type Cylinder PB12X25SR 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 PB12X25SR
The AirTAC PB12X25SR is a double-acting JIS pen-size mini cylinder engineered for high-frequency small-part 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, it uses an M5x0.8 port and a 5 mm rod with an M10x1.0 end thread.
This configuration includes the -S magnet for position sensing via AirTAC reed or electronic switches, plus an R axial inlet for straightforward in-line plumbing. The unit relies on a fixed TPU bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac PB Pen-type Cylinder PB12X25SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X25SR |
|---|---|
| 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 PB12X25SR
| 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 PB12X25SR Is Used
PCB Depaneling Jig
Actuates a small cutting blade or clamping finger in a tight electronics assembly fixture where the slim stainless body resists flux humidity.
Vial Capping Head
Provides the 34 N safe push force required to press lightweight plastic caps onto pharmaceutical vials on a high-speed rotary line.
Pick-and-Place Ejector
Mounts on a lightweight robot arm to push delicate components from a vacuum gripper, using the R axial inlet to keep plumbing flush against the manipulator.
Is the Airtac PB Pen-type Cylinder PB12X25SR the Right Cylinder?
When sizing this actuator, stepping down to the Ø10 bore provides 39.3 N of push at 0.5 MPa, while stepping up to the Ø16 bore yields 100.5 N, letting you tune the payload precisely. Because the fixed TPU bumper only decelerates the final few millimeters of travel, high-speed cycles with heavy tooling require metering out the exhaust or adding an external shock absorber. To confirm your ordering essentials for this model: 12 mm bore, 25 mm stroke, M5x0.8 port, S magnet, R axial back cover, and no mounting bracket.
Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the bumper decelerates but does not lock the rod. If your application requires fail-safe load holding, an external stop or rod lock is necessary. Additionally, the 5 mm rod is designed for coaxial thrust; over the 25 mm stroke, avoid side loading or add a linear bearing to prevent binding.
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 PB12X25SR FAQ
At 0.5 MPa this 12 mm bore cylinder provides 56.5 N of push and 46.7 N of pull. At the maximum operating pressure of 0.7 MPa, push increases to 79.1 N and pull to 65.4 N. It operates at 0.15-0.7 MPa with a speed range of 50-800 mm/s.
It uses a fixed TPU bumper at each end to decelerate the piston, which is not field-adjustable; for heavy loads at high speeds, add an external shock absorber. The built-in S magnet allows position detection using either AirTAC reed or electronic solid-state switches.
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 PB12X25SR
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.