Airtac PB Pen-type Cylinder PB16X50CB
The AirTAC Airtac PB Pen-type Cylinder PB16X50CB 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 PB16X50CB
The AirTAC PB16X50CB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a 16mm bore and a 50mm stroke, generating 100.5 N of push force and 90.7 N of pull force at 0.5 MPa. The slim SUS304 stainless round barrel and piston rod provide durability in damp or mildly corrosive workspaces, keeping end-of-arm tooling light.
This variant includes a CB double clevis back cover for pivoting loads and uses M5x0.8 air ports. It relies on a fixed TPU bumper at each end to decelerate the stroke. Because the rod is only 5mm thick with an M10x1.0 end thread, you should maintain coaxial alignment and avoid side-loading to prevent guide wear.
Airtac PB Pen-type Cylinder PB16X50CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X50CB |
|---|---|
| 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 PB16X50CB
| 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 PB16X50CB Is Used
Pivot-Actuated Clamping
Swings a small pneumatic clamp arm on a machining fixture using the CB double clevis to accommodate the pivot arc while holding light aluminum workpieces.
Carton Flap Folding
Tucks corrugated cardboard flaps on a packaging line where the slim stainless body resists humidity and the 100.5 N extend force easily moves light paperboard.
Diverter Gate Pushing
Extends a lightweight routing flap on a conveyor sorter, moving small plastic parts at 50-800 mm/s with the fixed TPU bumpers absorbing the end-of-stroke impact.
Is the Airtac PB Pen-type Cylinder PB16X50CB the Right Cylinder?
When sizing this actuator, plan for a safe working load of about 60 N, which is roughly 60% of its 100.5 N theoretical push at 0.5 MPa, ensuring smooth travel after accounting for seal friction. If you need to step down, the 12mm bore offers 56.5 N push at 0.5 MPa; stepping up is not available as 16mm is the largest in this series. A practical vertical lift capacity with a 2:1 safety margin is about 5.1 kg.
Note that a plain PB cylinder drifts when air pressure is lost or the valve is centered, as the bumpers only decelerate near stroke end rather than locking the load, so an external rod lock is needed for fail-safe holding. To order, confirm the 16mm bore, 50mm stroke, M5x0.8 porting, no sensor magnet, and the CB double clevis mount.
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 PB16X50CB 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.
The CB back cover provides a double clevis joint ideal for pivoting applications, but the 5mm rod requires coaxial thrust to avoid side load damage. The cylinder uses fixed TPU bumpers at both ends that decelerate the last few millimeters of travel; they are not adjustable, so for heavier tooling mass at higher speeds, you should meter-out the exhaust or add an external shock absorber.
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