Airtac PB Pen-type Cylinder PB16X225U
The AirTAC Airtac PB Pen-type Cylinder PB16X225U is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 225mm 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.
- BoreØ16 mm
- Stroke225 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X225U
The AirTAC PB16X225U is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a 16mm bore and a 225mm stroke, generating 100.5 N of push force and 90.7 N of pull force at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod provide durability in damp or mildly corrosive environments while keeping weight low for end-of-arm tooling. This specific configuration includes a U-type back cover, providing a 90-degree perpendicular air inlet for flat plumbing in tight spaces.
Air enters via the M5x0.8 port, driving the Ø5 mm rod at speeds of 50-800 mm/s. Deceleration at stroke ends relies on a fixed TPU bumper rather than an adjustable air cushion. Because this is a long 225mm stroke, the slender rod is built strictly for coaxial thrust; applying side load will cause binding, so an external linear bearing should be added for off-axis loads.
Airtac PB Pen-type Cylinder PB16X225U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X225U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 225 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 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 PB16X225U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×225 | 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 PB16X225U Is Used
PCB Depanelling Ejector
Pushes separated circuit boards out of a routing fixture on a surface mount line, utilizing the 90-degree U inlet to keep pneumatic plumbing flush against the machine frame.
Parcel Sorting Diverter
Extends a lightweight paddle to deflect small flat mailers between adjacent conveyor belts, taking advantage of the 225mm stroke and fast 50-800 mm/s travel speed.
Carton Flap Folder
Tucks the minor flaps of small shipping boxes prior to tape sealing, where the SUS304 stainless barrel withstands humid packing room conditions.
Is the Airtac PB Pen-type Cylinder PB16X225U the Right Cylinder?
When sizing this actuator, plan for a safe working load of about 60 N, which assumes a conservative 60 percent of the 100.5 N theoretical push at 0.5 MPa to overcome seal friction. For vertical lifts, this equates to raising roughly 5.1 kg safely with a 2:1 margin. If your application requires slightly less force, stepping down to the Ø12 bore yields 56.5 N push at 0.5 MPa. Since Ø16 is the largest in this series, stepping up requires migrating to a different body family.
Remember that a plain double-acting cylinder drifts when air pressure is lost or the valve is centered, and the fixed bumper only decelerates the piston near the end of travel rather than locking it. To confirm your build, verify the 16mm bore, 225mm stroke, M5x0.8 porting, U 90-degree side inlet, and the absence of 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 PB16X225U FAQ
At 0.5 MPa, this double-acting cylinder provides 100.5 N of push and 90.7 N of pull. At the maximum operating pressure of 0.7 MPa, it delivers 140.7 N push and 126.9 N pull. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper only decelerates the rod near the end of its stroke and does not act as a brake. An external rod lock or mechanical stop is required to hold a load safely without live pressure.
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