Airtac PB Pen-type Cylinder PB16X20CB
The AirTAC Airtac PB Pen-type Cylinder PB16X20CB is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 20mm 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
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X20CB
The AirTAC PB16X20CB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency small-part motion. It features a SUS304 stainless steel slim round barrel and piston rod, offering excellent durability in damp or mildly corrosive work areas. Generating 100.5 N of push force at 0.5 MPa, it provides robust thrust within a tiny footprint.
This specific configuration includes a CB double clevis back cover, allowing the body to pivot smoothly on a pin to accommodate lateral movement during the stroke cycle. Air connects via an M5x0.8 port, and the rod-end features an M10x1.0 thread for secure load coupling. Deceleration is handled by a fixed TPU bumper at each end, which absorbs impact over the final few millimeters of travel.
Airtac PB Pen-type Cylinder PB16X20CB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X20CB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 20 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 PB16X20CB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 PB16X20CB Is Used
Package Diverter Flap
Pivots a lightweight routing gate on a packaging conveyor to sort small cartons, utilizing the CB clevis to accommodate the arc of the swing arm.
PCB Test Fixture
Drives a delicate probe block onto printed circuit boards, where the slim 16 mm body saves valuable space within dense automated test racks.
Film Sealing Press
Applies 100.5 N of clamping force at 0.5 MPa to hold a heated jaw against packaging film, with the stainless barrel resisting humid production environments.
Is the Airtac PB Pen-type Cylinder PB16X20CB the Right Cylinder?
Selecting this 16 mm bore yields 100.5 N push and 90.7 N pull at 0.5 MPa. If you need less force, stepping down to the 12 mm bore drops the push to 56.5 N; if you require more power, this is the largest standard option in the PB family. For practical sizing, plan for a safe working load of roughly 60 N (about 60% of the 0.5 MPa theoretical push) to account for seal friction, or anticipate lifting a part weighing approximately 5.1 kg vertically with a sane 2:1 safety margin.
Because this model carries the CB double clevis, verify your mounting pin diameter matches the clevis bore. Keep in mind the fixed TPU bumper only decelerates near the stroke end; at high cycling speeds with heavy tooling mass, meter-out the exhaust or add an external shock absorber. A plain double-acting cylinder like this will drift and cannot hold a load if air pressure is lost or the valve is centered, so an external rod lock is necessary for fail-safe positioning.
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 PB16X20CB 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 of 50-800 mm/s.
No, a standard double-acting PB cylinder will drift if air is lost or the valve is centered. The fixed TPU bumper at each end only decelerates the piston near the end of stroke; it does not act as a lock or brake. An external rod lock or mechanical stop is required for fail-safe load holding.
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