Airtac PB Pen-type Cylinder PB12X25CB
The AirTAC Airtac PB Pen-type Cylinder PB12X25CB 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 PB12X25CB
The AirTAC PB12X25CB is a JIS pen-size double-acting single-rod 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. The slim SUS304 stainless barrel and screwed-in covers provide excellent durability in damp or mildly corrosive environments, keeping end-of-arm tooling light.
This specific configuration includes a CB double clevis back cover, allowing the body to pivot smoothly on a pin to accommodate lateral movement during the stroke. Air connects via an M5x0.8 port, and the Ø5 mm piston rod features an M10x1.0 rod-end thread. Deceleration relies on a fixed TPU bumper at each end, which is not adjustable, so metering out the exhaust is recommended when cycling faster with heavier tooling.
Airtac PB Pen-type Cylinder PB12X25CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X25CB |
|---|---|
| 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 PB12X25CB
| 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 PB12X25CB Is Used
Pivoting Clamp Arm
Ideal for swinging a small latch or bracket into place on a machining fixture, utilizing the CB double clevis to accommodate the arc of the moving arm.
Film Guide Tensioner
Maintains light, consistent tension on packaging web material in damp washdown areas, benefiting from the SUS304 stainless build to prevent corrosion.
Diverter Gate Actuator
Pushes a lightweight routing flap to sort small pharmaceutical bottles along a line, with the fixed TPU bumper absorbing the impact at the end of the 25 mm travel.
Is the Airtac PB Pen-type Cylinder PB12X25CB the Right Cylinder?
Choosing this 12 mm bore gives you a practical step up from the 10 mm version (39.3 N push at 0.5 MPa) without jumping to the larger 16 mm class (100.5 N push).
Because the CB clevis allows pivoting, ensure your mounting pin is well-lubricated to avoid binding. A plain cylinder like this will not hold its load if air pressure drops or the valve is centered; the piston drifts, and the bumper only decelerates near the stroke end. For fail-safe holding, specify an external rod lock. Confirm your ordering essentials: 12 mm bore, 25 mm stroke, M5x0.8 port, no sensor magnet, and the CB clevis.
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 PB12X25CB 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 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. Operating speed ranges from 50-800 mm/s.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumpers only decelerate the rod near the end of the stroke and do not act as a lock or brake. For vertical loads requiring fail-safe holding, an external rod lock or mechanical stop is required.
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 PB12X25CB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.