Airtac PB Pen-type Cylinder PB16X125SCB
The AirTAC Airtac PB Pen-type Cylinder PB16X125SCB is a double-acting pen-size (mini) air cylinder with a Ø16mm bore and 125mm 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
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB16X125SCB
The AirTAC PB16X125SCB 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, scaling to a maximum 140.7 N push at 0.7 MPa. The SUS304 stainless barrel and slim round profile save valuable space and payload on light end-of-arm tooling where bulkier actuators cannot fit.
This specific configuration includes a built-in piston magnet (S) for position sensing and a CB double clevis back cover for pivoting loads. Air connections use an M5x0.8 port. Because the stroke runs 125 mm on a Ø5 mm rod, maintaining coaxial alignment is critical to prevent side-load wear. End-of-stroke energy is managed by fixed TPU bumpers, which decelerate the piston over the final few millimeters rather than locking the load.
Airtac PB Pen-type Cylinder PB16X125SCB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X125SCB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 125 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 PB16X125SCB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | 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 PB16X125SCB Is Used
PCB Pick-and-Place
Drives lightweight grippers on surface mount assembly machines, utilizing the slim profile and 100.5 N extend force to move electronic components without adding excessive mass to the gantry.
Pouch Sealing Clamp
Actuates a pivoting sealing jaw via the CB double clevis on vertical form-fill equipment, providing consistent clamping pressure for flexible film packaging operations.
Sorting Diverter Arm
Powers a small deflector plate on a package routing line, where the integrated magnet allows AirTAC electronic switches to trigger the next sorting stage instantly.
Is the Airtac PB Pen-type Cylinder PB16X125SCB the Right Cylinder?
Selecting this 16 mm bore provides the highest standard force in the PB pen-size family. If you need slightly less thrust, the Ø12 bore offers a 56.5 N push at 0.5 MPa; stepping up is not possible as Ø16 is the largest available. For this 125 mm stroke, plan for a safe working load of roughly 60 N (about 60% of the 0.5 MPa theoretical force) to account for seal friction. This equates to lifting a vertical mass of about 5.1 kg with a sane 2:1 safety margin.
When ordering, confirm the essentials: 16 mm bore, 125 mm stroke, M5x0.8 port, S magnet for reed or electronic switches, and the CB double clevis mount. Note that a plain PB-type cylinder does not hold its position if air pressure drops or the valve is centered—the piston will drift. If your process requires fail-safe load holding, you must incorporate an external stop or a dedicated 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 PB16X125SCB 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 and a proof pressure of 1.2 MPa.
It uses fixed TPU bumpers at both ends to decelerate the piston over the last few millimeters, which are not adjustable. If operating at high speeds with heavy tooling mass, you should meter-out the exhaust or add an external shock absorber. Additionally, it does not hold its load on air loss; the piston drifts, so an external rod lock is required for fail-safe positioning.
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