Airtac PB Pen-type Cylinder PB6X50R
The AirTAC Airtac PB Pen-type Cylinder PB6X50R is a double-acting pen-size (mini) air cylinder with a Ø6mm 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.
- BoreØ6 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB6X50R
The AirTAC PB6X50R is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel round barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while saving valuable space and payload on light end-of-arm tooling. Delivering 14.2 N of push force at 0.5 MPa, it is built for fast actuation with an operating speed range of 50-800 mm/s.
This specific configuration includes a 50 mm stroke and an R axial air inlet for in-line plumbing via an M5x0.8 port. Because the unit lacks a sensor magnet, position verification requires external methods. The end caps use fixed TPU bumpers to decelerate the piston over the final few millimeters; however, since this is not an adjustable air cushion, metering out the exhaust or adding an external shock absorber is recommended when moving real tooling mass at higher velocities.
Airtac PB Pen-type Cylinder PB6X50R Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X50R |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 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 60 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 (Ø6mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 14.2 N | 10.6 N |
| 0.7 MPa (max) | 19.8 N | 14.8 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 PB6X50R
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 6 | 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 PB6X50R Is Used
PCB Probe Testing
Drives delicate spring-loaded test pins onto printed circuit boards, where the slim 6 mm barrel clears dense connector arrays and the 14.2 N push ensures reliable contact without damaging traces.
Blister Pack Sorting
Pushes small pharmaceutical blister packs into secondary cartoning channels, utilizing the 50 mm stroke and lightweight SUS304 body to sustain rapid 50-800 mm/s cycling in washdown-adjacent zones.
Micro-Component Ejection
Ejects tiny molded plastic clips from machining fixtures; the Ø3 mm rod provides precise coaxial thrust, though an external guide should be added if the ejection path involves any lateral offset.
Is the Airtac PB Pen-type Cylinder PB6X50R the Right Cylinder?
When sizing this actuator, note that the 14.2 N push at 0.5 MPa yields a practical safe working load of roughly 9 N (about 60% of theoretical) to account for seal friction. For vertical lifts, plan for a maximum part weight of about 0.7 kg to maintain a sane 2:1 safety margin. If your application requires slightly less force, the Ø4 bore provides 6.3 N of push, whereas stepping up to the Ø10 bore offers a substantial 39.3 N. Keep in mind that a plain PB body does not hold its position if air pressure drops or the valve is centered—the piston will drift, so an external rod lock is required for fail-safe holding. To order, confirm the 6 mm bore, 50 mm stroke, M5x0.8 porting, R axial inlet, and the absence of a magnet.
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 PB6X50R FAQ
At 0.5 MPa, the push force is 14.2 N and the pull force is 10.6 N. At the maximum operating pressure of 0.7 MPa, the push force is 19.8 N and the pull force is 14.8 N. The operating pressure range is 0.15-0.7 MPa, with a proof pressure of 1.2 MPa and a speed range of 50-800 mm/s.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper only decelerates the piston near the stroke end and does not act as a lock or brake. For vertical load holding, an external stop or rod lock must be installed.
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