Airtac PB Pen-type Cylinder PB16X55CB
The AirTAC Airtac PB Pen-type Cylinder PB16X55CB is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 55mm 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
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X55CB
The AirTAC PB16X55CB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a SUS304 stainless steel slim round barrel and piston rod, offering reliable durability in damp or mildly corrosive environments. Delivering 100.5 N of push force and 90.7 N of pull force at 0.5 MPa, this actuator uses an M5x0.8 air port and an M10x1.0 rod-end thread to couple securely to your load.
Equipped with a CB double clevis back cover, it is designed specifically for pivoting loads. The unit relies on a fixed TPU bumper at each end to decelerate the stroke over the final few millimeters. Because this bumper is not adjustable, metering out the exhaust or adding an external shock absorber is recommended when cycling heavy tooling mass at high speeds.
Airtac PB Pen-type Cylinder PB16X55CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X55CB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 55 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 PB16X55CB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×55 | 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 PB16X55CB Is Used
Pivoting Component Diverter
Ideal for routing small electronic components on a conveyor using the CB double clevis to accommodate a swinging arc motion during transfer.
Pouch Flap Folding
Provides the 100.5 N push at 0.5 MPa needed to tuck packaging flaps on high-speed flow-wrap machinery without taking up excessive frame space.
Light Press Assembly
Drives a small bearing into a housing on an automated jig, utilizing the fixed TPU bumper to soften the impact at the end of the 55 mm extension.
Is the Airtac PB Pen-type Cylinder PB16X55CB the Right Cylinder?
When sizing this actuator, plan for a safe working load of roughly 60 N, which accounts for seal friction by loading the cylinder to about 60% of its 100.5 N theoretical push at 0.5 MPa. For vertical lifts, this equates to raising about 5.1 kg safely with a 2:1 margin. If you need to step down, the Ø12 bore provides 56.5 N of push at 0.5 MPa; stepping up is not available as Ø16 is the largest in this family. To confirm your ordering essentials: specify the 16 mm bore, 55 mm stroke, M5x0.8 port, CB double clevis, and no magnet.
Note that a plain PB cylinder does not hold its position if air pressure is lost or the valve is centered, as the piston will drift. For fail-safe load holding, an external stop or rod lock is required. Additionally, the Ø5 mm rod is built for coaxial thrust, so if your application involves off-axis loads, incorporate an external guide or linear bearing to prevent side-load 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 PB16X55CB 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 speed range of 50-800 mm/s.
No, a plain PB cylinder will drift if air is lost or the valve is centered, as the fixed TPU bumper only decelerates near the stroke end and does not act as a lock. For vertical or fail-safe holding, you must use an external rod lock or mechanical stop.
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