Airtac PB Pen-type Cylinder PB16X85U
The AirTAC Airtac PB Pen-type Cylinder PB16X85U is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 85mm 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
- Stroke85 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X85U
The AirTAC PB16X85U is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It features a 16mm bore and an 85mm stroke, delivering a theoretical push force of 100.5 N and a pull force of 90.7 N at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod provide durability in damp or mildly corrosive environments while keeping end-of-arm tooling weight to an absolute minimum.
This specific configuration includes a U-type back cover, providing a 90-degree perpendicular air inlet for flat plumbing in space-constrained machinery. Air connects via an M5x0.8 port, and the load attaches to an M10x1.0 rod-end thread. Deceleration at stroke ends relies on a fixed TPU bumper rather than an adjustable air cushion, meaning the last few millimeters of travel are absorbed mechanically. Operating speed ranges from 50-800 mm/s at pressures between 0.15-0.7 MPa.
Airtac PB Pen-type Cylinder PB16X85U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X85U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 85 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 PB16X85U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×85 | 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 PB16X85U Is Used
PCB Depaneling Router
Actuates a linear cutting head on an electronics depaneling machine, utilizing the 90-degree U inlet to keep pneumatic plumbing flush against the flat machine frame.
Carton Flap Folder
Folds minor corrugated box flaps on a continuous packaging conveyor, where the fixed TPU bumper safely absorbs the repetitive end-of-stroke impact at high cycling speeds.
Lab Sample Dispenser
Drives a pipetting probe in a wet analytical instrument, relying on the SUS304 stainless build to resist humidity and chemical exposure without adding excessive payload to the gantry.
Is the Airtac PB Pen-type Cylinder PB16X85U the Right Cylinder?
Selecting this 16mm bore yields 100.5 N of push force at 0.5 MPa. If you need slightly less force, stepping down to the 12mm bore provides 56.5 N of push. If your application requires significantly more thrust, you would move outside the PB pen-size family. For this 85mm stroke, plan for a safe working load of roughly 60 N (about 60% of the 0.5 MPa figure) to account for seal friction and smooth travel. This equates to lifting about 5.1 kg vertically with a sane 2:1 safety margin.
When ordering, confirm the 16mm bore, 85mm stroke, M5x0.8 port, and the U-type 90-degree side inlet. Note that a plain PB cylinder does not hold its load if air pressure is lost or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the stroke end rather than locking the position. If your process demands fail-safe holding, an external rod lock or mechanical stop is required. Furthermore, the Ø5 mm rod is designed for coaxial thrust, so over this 85mm stroke, avoid side loads by adding an external guide or linear bearing.
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 PB16X85U FAQ
This double-acting cylinder has a theoretical push force of 100.5 N and a pull force of 90.7 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push is 140.7 N and the pull is 126.9 N. It operates on filtered air between 0.15-0.7 MPa at speeds of 50-800 mm/s, with a proof pressure of 1.2 MPa.
It uses a fixed TPU bumper at each end to decelerate the piston over the last few millimeters of travel; it is not an adjustable air cushion. If you are moving real tooling mass at high speed, you should meter-out the exhaust or add an external shock absorber. Additionally, it does not hold its position if air is lost, so an external stop is needed for fail-safe load holding.
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