Airtac PB Pen-type Cylinder PB12X25SCB
The AirTAC Airtac PB Pen-type Cylinder PB12X25SCB 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 PB12X25SCB
The AirTAC PB12X25SCB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel barrel and piston rod, providing excellent durability in damp or mildly corrosive environments without adding unnecessary bulk to your jig. Delivering 56.5 N of push force at 0.5 MPa, it occupies a practical middle ground in the miniature cylinder range.
This specific configuration includes a built-in piston magnet (S) for position sensing and a CB double clevis back cover for pivoting loads. Air connects via an M5x0.8 port, and the Ø5 mm rod features an M10x1.0 end thread for secure load coupling. Deceleration relies on a fixed TPU bumper at each end, which is not user-adjustable.
Airtac PB Pen-type Cylinder PB12X25SCB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X25SCB |
|---|---|
| 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 PB12X25SCB
| 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 PB12X25SCB Is Used
PCB Depaneling Jig
Actuates a small cutting blade or clamping jaw in tight electronics assembly lines where the slim stainless barrel resists flux humidity and fits within dense routing channels.
Pouch Sealing Pivot
Uses the CB double clevis to pivot a lightweight sealing bar, cycling rapidly at 50-800 mm/s while the fixed TPU bumper absorbs the end-of-stroke impact.
Pick-and-Place Ejector
Ejects small plastic components from a mold cavity, relying on the built-in S magnet to trigger an AirTAC electronic or reed switch for precise part-release timing.
Is the Airtac PB Pen-type Cylinder PB12X25SCB the Right Cylinder?
When sizing this actuator, consider stepping down to the Ø10 bore if your payload is lighter, which yields 39.3 N of push at 0.5 MPa. If you need more thrust, the Ø16 bore provides 100.5 N at the same pressure.
Because the CB double clevis allows pivoting, ensure your plumbing accommodates the swing radius. Note that a standard PB body does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the TPU bumper only decelerates near the stroke end. For fail-safe holding, an external rod lock or mechanical stop is required. Confirm your ordering essentials: 12 mm bore, 25 mm stroke, S magnet, CB clevis, and M5x0.8 port.
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 PB12X25SCB FAQ
This double-acting single-rod cylinder delivers 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. It operates between 0.15-0.7 MPa, runs at speeds of 50-800 mm/s, and has a proof pressure of 1.2 MPa.
Yes, the CB suffix denotes a double clevis back cover designed specifically for pivoting loads. The cylinder uses a fixed TPU bumper at each end to decelerate the piston over the last few millimeters. Because it is not adjustable, you should meter-out the exhaust or add an external shock absorber when cycling heavy tooling at high speeds.
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 PB12X25SCB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.