Airtac PB Pen-type Cylinder PB12X65U
The AirTAC Airtac PB Pen-type Cylinder PB12X65U is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 65mm 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
- Stroke65 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB12X65U
The AirTAC PB12X65U is a double-acting JIS pen-size mini cylinder engineered for high-frequency small-part motion in confined spaces. It delivers a theoretical push of 56.5 N and pull of 46.7 N at 0.5 MPa, utilizing a slim SUS304 stainless steel round barrel and piston rod to resist damp or mildly corrosive environments. The integrated U-type back cover features a 90-degree perpendicular air inlet, enabling flat plumbing where axial line clearance is tight.
Equipped with a fixed TPU bumper at each end, this model decelerates the piston over the final few millimeters of travel rather than relying on adjustable air cushioning. Operating at speeds from 50-800 mm/s via an M5x0.8 port, it provides reliable thrust without the bulk of larger profile bodies. The Ø5 mm piston rod features an M10x1.0 rod-end thread for secure load coupling, and the unit handles a maximum operating pressure of 0.7 MPa.
Airtac PB Pen-type Cylinder PB12X65U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X65U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 65 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 PB12X65U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×65 | 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 PB12X65U Is Used
PCB Depaneling Jig
Drives a small cutting blade or router in a tight electronics assembly cell, using its 56.5 N push force to separate routed circuit panels cleanly.
Carton Flap Folder
Tucks minor product flaps on a compact packaging line, where the 90-degree side inlet keeps pneumatic plumbing flush against the machine frame.
Lab Dispenser Actuator
Moves a syringe plunger for chemical dosing in wet laboratory environments, relying on the SUS304 stainless build to withstand ambient moisture.
Is the Airtac PB Pen-type Cylinder PB12X65U the Right Cylinder?
When sizing this 12 mm bore actuator, stepping down to the Ø10 bore reduces the 0.5 MPa push force to 39.3 N, while stepping up to the Ø16 bore increases it to 100.5 N. For real-world work at 0.5 MPa, plan for a safe working load of about 34 N (roughly 60% of the theoretical force to account for seal friction). This equates to lifting about 2.9 kg vertically with a sane 2:1 safety margin. Because the thin Ø5 mm rod is built for coaxial thrust, add an external linear bearing if your application involves off-axis loads or long strokes.
A plain PB cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the bumper only decelerates near the stroke end. For fail-safe holding, specify an external rod lock. To order, confirm the 12 mm bore, 65 mm stroke, M5x0.8 porting, the U 90-degree side inlet, and note this specific configuration does not include a sensor magnet.
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 PB12X65U FAQ
At 0.5 MPa, this double-acting cylinder provides 56.5 N of push (extend) force and 46.7 N of pull (retract) force. At the maximum operating pressure of 0.7 MPa, the push is 79.1 N and the pull is 65.4 N. It operates at speeds between 50-800 mm/s.
It uses a fixed TPU bumper at each end to decelerate the piston over the last few millimeters of travel; this is not an adjustable air cushion or a locking brake. The U back cover provides a 90-degree perpendicular air inlet for flat plumbing. If driving heavy tooling mass at high speed, meter-out the exhaust or add an external shock absorber.
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