
The AirTAC Airtac PB Pen-type Cylinder PB10X25SU is a double-acting pen-size (mini) air cylinder with a Ø10mm 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.
The AirTAC PB10X25SU is a JIS pen-size double-acting single-rod mini cylinder engineered for compact spaces. It generates 39.3 N of push and 33 N of pull at 0.5 MPa, utilizing a slim SUS304 stainless steel barrel and a 4 mm rod. The U suffix equips the rear cover with a 90-degree perpendicular air inlet, allowing flat plumbing along your machine frame. Pneumatic connections use an M5x0.8 port, while the rod end features an M8x1.0 thread for secure load coupling.
This unit includes a built-in piston magnet (S code) for position sensing with AirTAC reed or electronic switches. Travel is capped by a fixed TPU bumper at each end, which decelerates the piston over the final few millimeters rather than providing a locking brake. Because the rod is only 4 mm thick, it is built for coaxial thrust; if your application involves off-axis loads or longer extensions, adding an external linear bearing prevents side-load damage.
| Model | Airtac PB Pen-type Cylinder PB10X25SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 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 200 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 39.3 N | 33.0 N |
| 0.7 MPa (max) | 55.0 N | 46.2 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.
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 10 | 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).
Drives a small vacuum nozzle head to lift delicate electronic components, utilizing the 25 mm stroke and 24 N safe working load for precise placement on dense circuit boards.
Extends a lightweight plastic paddle to tuck minor flaps on small pharmaceutical cartons, benefiting from the 90-degree side inlet that keeps air lines flush against the conveyor frame.
Pushes a micro-pump plunger for chemical reagent dispensing, where the SUS304 barrel resists humid lab environments and the compact body fits inside tight analytical equipment.
When sizing this actuator, plan for a safe working load of roughly 24 N, which accounts for seal friction by loading the cylinder to about 60% of its 39.3 N theoretical push at 0.5 MPa. In vertical lift scenarios, this equates to lifting about 2 kg with a sane 2:1 safety margin. If you need less force, the adjacent Ø6 bore provides 14.2 N of push at 0.5 MPa; stepping up to the Ø12 bore yields 56.5 N. Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, so fit an external rod lock if your mechanism must hold a load safely without live pressure. To order, confirm the 10 mm bore, 25 mm stroke, M5x0.8 port, S magnet, and U 90-degree inlet configuration.
Quick checklist
This double-acting cylinder delivers 39.3 N push and 33 N pull at 0.5 MPa, with a maximum push of 55 N and pull of 46.2 N at 0.7 MPa. The operating pressure range is 0.15-0.7 MPa, the proof pressure is 1.2 MPa, and the speed range is 50-800 mm/s.
The S code indicates a built-in piston magnet compatible with AirTAC reed or electronic switches for end-of-stroke detection. It uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel; for high-speed cycling with heavy tooling, meter-out the exhaust or add an external shock absorber, as the bumper is not adjustable.
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