Airtac PB Pen-type Cylinder PB6X25SR
The AirTAC Airtac PB Pen-type Cylinder PB6X25SR is a double-acting pen-size (mini) air cylinder with a Ø6mm 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.
- BoreØ6 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB6X25SR
The AirTAC PB6X25SR is a double-acting JIS pen-size mini cylinder engineered for tight spaces and light end-of-arm tooling. It delivers 14.2 N of push and 10.6 N of pull at 0.5 MPa, operating through a 25 mm stroke. The slim SUS304 stainless steel barrel and piston rod resist damp environments, making it suitable for wet processing lines.
This specific configuration includes an R axial air inlet for in-line plumbing and a built-in S magnet for position sensing. Air flows through an M5x0.8 port, driving the 3 mm rod at speeds of 50-800 mm/s. Deceleration relies on a fixed TPU bumper at each end, which absorbs impact over the final few millimeters of travel.
Airtac PB Pen-type Cylinder PB6X25SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X25SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 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 60 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 (Ø6mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 14.2 N | 10.6 N |
| 0.7 MPa (max) | 19.8 N | 14.8 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 PB6X25SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 6 | 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 PB6X25SR Is Used
PCB Edge Guide
Pushes delicate circuit boards into test fixtures using a safe 9 N working load without damaging surface components.
Lab Dispenser Tap
Actuates small reagent valves on analytical instruments where the SUS304 body resists chemical humidity.
Pick-and-Place Ejector
Ejects lightweight plastic caps from vacuum grippers at 50-800 mm/s, relying on the S magnet to confirm ejection.
Is the Airtac PB Pen-type Cylinder PB6X25SR the Right Cylinder?
Selecting this 6 mm bore provides a compact 14.2 N push at 0.5 MPa. If you need slightly less force, the 4 mm bore offers 6.3 N; stepping up to the 10 mm bore yields 39.3 N. Plan for a safe working load of about 9 N (roughly 60% of the 0.5 MPa theoretical force) to account for seal friction. This equates to lifting about 0.7 kg vertically with a sane 2:1 margin.
Because the thin 3 mm rod is built for coaxial thrust, add an external guide if side loads are present. Note that a plain PB body does not hold its load if air pressure drops—the piston drifts, and the bumper only decelerates near stroke end, so an external rod lock is needed for fail-safe holding. Confirm your ordering essentials: 6 mm bore, 25 mm stroke, M5x0.8 port, S magnet, and R axial inlet.
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 PB6X25SR FAQ
At 0.5 MPa, the push force is 14.2 N and the pull force is 10.6 N. At the maximum operating pressure of 0.7 MPa, the push force is 19.8 N and the pull force is 14.8 N.
No, the piston drifts without live pressure. The fixed TPU bumper only decelerates the rod near the stroke end; it does not lock the position. You must add an external rod lock for fail-safe vertical holding.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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