Airtac PB Pen-type Cylinder PB16X50U
The AirTAC Airtac PB Pen-type Cylinder PB16X50U is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 50mm 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
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X50U
The AirTAC PB16X50U is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It features a 16mm bore and a 50mm stroke, delivering a robust 100.5 N push and 90.7 N pull at 0.5 MPa. The slim SUS304 stainless barrel and piston rod provide excellent durability in damp or mildly corrosive environments, keeping end-of-arm tooling lightweight. This specific configuration includes a U-type back cover, offering a perpendicular 90-degree side air inlet for flat plumbing in space-constrained installations.
Air enters via the M5x0.8 port to drive the Ø5 mm rod, which terminates in an M10x1.0 thread for secure load coupling. Deceleration is handled by a fixed TPU bumper at each end rather than an adjustable air cushion. Because this bumper only absorbs impact over the final few millimeters of travel, high-speed cycling with heavy tooling may require metering out the exhaust or adding an external shock absorber. The unit operates between 0.15-0.7 MPa at speeds of 50-800 mm/s.
Airtac PB Pen-type Cylinder PB16X50U Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X50U |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 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 PB16X50U
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×50 | 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 PB16X50U Is Used
PCB Depaneling Ejector
Pushes separated circuit boards off a routing fixture with precise 50mm travel, utilizing the 100.5N force to clear the cutting area without stressing the substrate.
Carton Flap Tucker
Folds minor corrugated flaps prior to sealing on a compact packaging line, where the U-type side inlet keeps pneumatic plumbing flat against the machine frame.
Sorter Diverter Gate
Actuates a lightweight routing paddle to direct small parcels down a chute, relying on the SUS304 body to withstand humid washdown environments.
Is the Airtac PB Pen-type Cylinder PB16X50U the Right Cylinder?
Choosing this 16mm bore provides the highest standard force in the PB family, pushing 100.5 N at 0.5 MPa. If you need slightly less power, stepping down to the Ø12 bore yields 56.5 N of push force. Since this is the largest available diameter, there is no larger standard option in this series. For sizing real work, plan for a safe working load of about 60 N (roughly 60% of the 0.5 MPa theoretical force) to account for seal friction and smooth travel. In vertical lift scenarios, this equates to lifting about 5.1 kg with a sane 2:1 safety margin.
When ordering, confirm the 16mm bore, 50mm stroke, and the U-type 90-degree side inlet configuration. Note that a plain PB cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift. For fail-safe load holding, an external stop or rod lock is required. Additionally, the Ø5 mm rod is designed for coaxial thrust, so if your application involves off-axis loads or longer strokes, incorporate an external linear bearing guide to prevent side-loading damage.
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 PB16X50U FAQ
At 0.5 MPa, this double-acting cylinder provides 100.5 N push and 90.7 N pull. At the maximum operating pressure of 0.7 MPa, it yields 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 and a speed range of 50-800 mm/s.
The U back cover provides a 90-degree perpendicular air inlet for flat plumbing in tight spaces. Instead of an adjustable air cushion, it uses a fixed TPU bumper at each end to decelerate the stroke over the final few millimeters. For high-speed or heavy tooling loads, you should meter-out the exhaust or add an external shock absorber.
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