Airtac PB Pen-type Cylinder PB16X50CBLB
The AirTAC Airtac PB Pen-type Cylinder PB16X50CBLB 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 PB16X50CBLB
The AirTAC PB16X50CBLB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It delivers a theoretical push of 100.5 N and pull of 90.7 N at 0.5 MPa, driven through an M5x0.8 air port. The slim SUS304 stainless barrel and piston rod provide durability in damp or mildly corrosive environments while keeping mass low for end-of-arm tooling.
This specific configuration includes a CB double clevis back cover for pivoting loads and an LB mounting bracket. It uses fixed TPU bumpers at both ends to decelerate the stroke over the final few millimeters. Because the rod is a slender Ø5 mm with an M10x1.0 end thread, maintaining coaxial alignment is critical to prevent side loading and premature wear.
Airtac PB Pen-type Cylinder PB16X50CBLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X50CBLB |
|---|---|
| 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 PB16X50CBLB
| 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 PB16X50CBLB Is Used
Pivoting Gripper Jaw
Ideal for actuating a small pivoting gripper jaw on a packaging machine, utilizing the CB double clevis to accommodate the swing arc while providing 100.5 N of extend force at 0.5 MPa.
Diverter Arm Mechanism
Drives a lightweight diverter arm on a conveyor sorting line, where the LB bracket secures the body and the fixed TPU bumpers absorb the repetitive impact of routing small packages.
Lab Sample Ejector
Ejects processed test tubes from a centrifuge carousel in laboratory automation, benefiting from the SUS304 stainless build to resist humidity and chemical exposure in the workspace.
Is the Airtac PB Pen-type Cylinder PB16X50CBLB the Right Cylinder?
When sizing this 16 mm bore actuator, plan for a safe working load of about 60 N, which accounts for roughly 60% of the 100.5 N theoretical push at 0.5 MPa to overcome seal friction and ensure smooth travel. For vertical lifts, this equates to raising approximately 5.1 kg with a sane 2:1 safety margin. If you need less force, the adjacent 12 mm bore offers 56.5 N push at 0.5 MPa; if you require more, stepping up is not available within this pen-size family, so consider external shock absorption for heavy masses.
A standard PB-type cylinder does not hold its position if air pressure drops or the valve is centered, as the piston will drift and the bumper only decelerates near the end of the stroke. For fail-safe holding, an external rod lock or mechanical stop is required. Confirm your ordering essentials: 16 mm bore, 50 mm stroke, M5x0.8 port, CB double clevis, and LB 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 PB16X50CBLB 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.
This model uses fixed TPU bumpers at both ends to decelerate the piston over the last few millimeters of travel; they are not adjustable, so metering out the exhaust or adding external shocks is recommended for high-speed loads. The CB back cover provides a double clevis for pivoting applications, and the included LB bracket allows rigid body mounting.
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