Airtac PB Pen-type Cylinder PB16X250CB
The AirTAC Airtac PB Pen-type Cylinder PB16X250CB is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 250mm 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
- Stroke250 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X250CB
The AirTAC PB16X250CB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It delivers a robust 100.5 N push and 90.7 N pull at 0.5 MPa, utilizing a slim SUS304 stainless steel barrel and a 5 mm rod to endure damp or mildly corrosive production lines. The CB double clevis back cover accommodates pivoting loads, while the M5x0.8 port and M10x1.0 rod-end thread ensure straightforward integration.
Because this model spans 250 mm of stroke, the fixed TPU elastic bumper at each end only decelerates the final few millimeters of travel. At operating speeds up to 800 mm/s with real tooling mass, you should meter-out the exhaust or install an external shock absorber to prevent bottoming out. The slender 5 mm rod is built for pure coaxial thrust, so an external linear bearing is recommended to handle any off-axis loads.
Airtac PB Pen-type Cylinder PB16X250CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X250CB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 250 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 PB16X250CB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×250 | 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 PB16X250CB Is Used
Pivot Arm Diverter
Swings lightweight packages on a sorting line using the CB double clevis, relying on the 100.5 N push at 0.5 MPa to rotate the mechanism through its 250 mm travel.
Long-Stroke Gate Actuator
Opens and closes a slim reject gate on a food-grade conveyor, where the SUS304 barrel withstands routine wash-downs and the pen-size body fits the narrow frame.
Textile Yarn Guide
Traverses a thread guide across a 250 mm path at high frequency, benefiting from the 800 mm/s speed capability while requiring external shock absorption at the stroke ends.
Is the Airtac PB Pen-type Cylinder PB16X250CB the Right Cylinder?
When sizing this 16 mm bore actuator, stepping down to the 12 mm bore yields a 56.5 N push at 0.5 MPa, whereas this PB16 provides 100.5 N. If you need more force, note that 16 mm is the largest in this pen-size family, so exceeding 140.7 N at 0.7 MPa requires a different profile series. For practical sizing, plan for a safe working load of about 60 N (roughly 60% of the 0.5 MPa figure) to account for seal friction, which equates to lifting about 5.1 kg vertically with a 2:1 safety margin.
Confirm your ordering essentials: 16 mm bore, 250 mm stroke, M5x0.8 air port, CB double clevis back cover, and no sensor magnet. A plain double-acting cylinder does not hold its position if air pressure drops or the valve is centered—the piston will drift, and the bumper only decelerates near the stroke end. If your pivoting assembly must stay fixed during a loss of pressure, incorporate an external rod lock.
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 PB16X250CB FAQ
This 16 mm bore double-acting cylinder provides a 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 between 0.15-0.7 MPa, runs at speeds of 50-800 mm/s, and has a proof pressure of 1.2 MPa.
No, a standard double-acting PB cylinder will drift if air is lost or the valve is centered. The fixed TPU bumper only decelerates the piston near the end of the 250 mm stroke; it does not act as a lock or brake. An external rod lock or mechanical stop is required to safely hold a suspended load.
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