Airtac PB Pen-type Cylinder PB16X25U
The AirTAC Airtac PB Pen-type Cylinder PB16X25U is a double-acting pen-size (mini) air cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X25U
The AirTAC PB16X25U is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It provides a theoretical push of 100.5 N and pull of 90.7 N at 0.5 MPa, driven through an M5x0.8 port. The slim SUS304 stainless barrel and piston rod offer reliable durability in damp or mildly corrosive environments, keeping end-of-arm tooling weight low.
This specific configuration features a U-type back cover, giving a 90-degree perpendicular air inlet for flat plumbing in space-constrained machinery. Travel is governed by a fixed TPU bumper at each end rather than an adjustable cushion, and the unit operates at speeds from 50-800 mm/s with a maximum pressure of 0.7 MPa.
Airtac PB Pen-type Cylinder PB16X25U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X25U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 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 (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 PB16X25U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | 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 PB16X25U Is Used
PCB Depaneling Jig
Drives a low-profile cutting blade in an electronics assembly fixture, utilizing the 90-degree side inlet to keep pneumatic plumbing flush against the machine frame.
Carton Flap Folder
Tucks small corrugated box flaps at high speed, where the fixed TPU bumper absorbs the repeated impact of the 25 mm stroke without needing external adjustment.
Lab Sample Ejector
Pushes prepared vials out of a wet processing station, relying on the SUS304 stainless rod to resist mild chemical exposure during automated handling.
Is the Airtac PB Pen-type Cylinder PB16X25U the Right Cylinder?
When sizing this 16 mm bore actuator, plan for a safe working load of roughly 60 N, which accounts for seal friction at 0.5 MPa. For vertical lifts, this translates to safely hoisting about 5.1 kg with a standard 2:1 safety margin. If your application requires less force, stepping down to the 12 mm bore yields a 56.5 N push at 0.5 MPa; since 16 mm is the largest in this pen-size family, stepping up requires migrating to a larger profile format. To confirm your ordering essentials: specify the 16 mm bore, 25 mm stroke, M5x0.8 porting, U-type 90-degree inlet, and no sensor magnet. Note that a plain PB body drifts when air is lost or the valve is centered, so an external rod lock is required to hold a load safely.
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 PB16X25U FAQ
At 0.5 MPa, the push force is 100.5 N and the pull force is 90.7 N. At the maximum operating pressure of 0.7 MPa, the push is 140.7 N and the pull is 126.9 N. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa and a speed range of 50-800 mm/s.
This 16 mm bore model uses a fixed TPU bumper at each end to decelerate the piston over the last few millimeters. It is not a field-adjustable air cushion, so if you are moving real tooling mass at high speeds, you should meter-out the exhaust or add an external shock absorber to prevent bottoming out.
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Related AirTAC PB Pen-Size Cylinders
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