Airtac PB Pen-type Cylinder PB16X50RLB
The AirTAC Airtac PB Pen-type Cylinder PB16X50RLB 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 PB16X50RLB
The AirTAC PB16X50RLB is a double-acting JIS pen-size 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 16 mm bore and 50 mm stroke. The SUS304 stainless barrel and piston rod provide excellent durability in damp or mildly corrosive environments, keeping the unit slim enough for tight jig spaces.
Air enters via an R axial inlet for clean in-line plumbing, and the package includes an LB mounting bracket for secure body attachment. This bore uses an M5x0.8 port and an M10x1.0 rod-end thread. Because it relies on a fixed TPU bumper at each end rather than an adjustable air cushion, you should meter-out the exhaust or add an external shock absorber when cycling heavy tooling at high speeds.
Airtac PB Pen-type Cylinder PB16X50RLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB16X50RLB |
|---|---|
| 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 PB16X50RLB
| 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 PB16X50RLB Is Used
PCB Test Handler
Drives small pneumatic probes onto test pads with precise 50 mm travel, leveraging the 60 N safe working load to compress contact springs without damaging the board.
Carton Flap Folder
Folds minor flaps on small pharmaceutical cartons, where the slim stainless body resists washdown moisture and the M10x1.0 rod thread secures a custom folding blade.
Sorter Diverter Arm
Actuates a lightweight routing gate on a conveyor, lifting parts weighing up to 5.1 kg vertically with a 2:1 safety margin before pushing them down a reject lane.
Is the Airtac PB Pen-type Cylinder PB16X50RLB the Right Cylinder?
Selecting this 16 mm bore gives you the maximum thrust in the PB family. If your application is lighter, stepping down to the 12 mm bore yields 56.5 N push at 0.5 MPa, which might save space. Since 16 mm is the largest available, you cannot step up further for more force. Plan for a safe working load of roughly 60 N (about 60% of the 100.5 N theoretical push) to account for seal friction and smooth travel.
A plain double-acting cylinder like this will drift if air pressure is lost or the valve is centered, as the TPU bumper only decelerates the piston near the end of stroke rather than locking it. For fail-safe positioning, install an external rod lock. When ordering, confirm the 50 mm stroke, M5x0.8 port, R axial inlet, LB mount, and note that no sensor magnet is included.
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 PB16X50RLB 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 cylinder operates at 0.15-0.7 MPa with a speed range of 50-800 mm/s.
It uses a fixed TPU bumper at each end that decelerates the piston over the last few millimeters. It is not an adjustable air cushion, so high-speed tooling may require an external shock absorber. Additionally, it does not hold position on air loss; the piston will drift, requiring an external stop for fail-safe holding.
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Related AirTAC PB Pen-Size Cylinders
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