Airtac PB Pen-type Cylinder PB6X20RLB
The AirTAC Airtac PB Pen-type Cylinder PB6X20RLB is a double-acting pen-size (mini) air cylinder with a Ø6mm 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.
- BoreØ6 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8
- CushionElastic bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PB Pen-type Cylinder PB6X20RLB
The AirTAC PB6X20RLB is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It generates a 14.2 N push and 10.6 N pull at 0.5 MPa, utilizing an M5x0.8 port and a 3 mm piston rod. The slim SUS304 stainless barrel and screwed-in covers provide excellent durability in damp or mildly corrosive workspaces while saving valuable space on end-of-arm tooling.
This specific configuration features an R axial air inlet for in-line plumbing and includes an LB mounting bracket for secure attachment. It relies on a fixed TPU bumper at each end to decelerate the stroke over the final few millimeters. Because the rod is only 3 mm thick, you must maintain coaxial thrust and avoid side loading to prevent bending, especially over longer extensions.
Airtac PB Pen-type Cylinder PB6X20RLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X20RLB |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 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 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 PB6X20RLB
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 6 | 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 PB6X20RLB Is Used
PCB Probe Testing
Drives delicate test probes onto printed circuit boards with a safe 9 N working load, preventing trace damage while fitting into dense testing jigs.
Small Part Diverting
Extends a 3 mm rod to push lightweight plastic caps or electronic resistors between conveyor lanes without adding bulk to the transfer head.
Lab Sample Ejection
Ejects tiny vials from a centrifuge carousel using the 14.2 N extend force, where the SUS304 body withstands humid laboratory environments.
Is the Airtac PB Pen-type Cylinder PB6X20RLB the Right Cylinder?
When sizing this 6 mm bore unit, consider stepping down to the 4 mm bore if your payload is very light, which offers 6.3 N of push at 0.5 MPa. If you need more force, stepping up to the 10 mm bore provides 39.3 N of push at 0.5 MPa.
Keep in mind that a standard double-acting cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift, and the bumper only decelerates it near the end of the stroke. For a fail-safe hold, an external stop or rod lock is required. Confirm your ordering essentials: 6 mm bore, 20 mm stroke, M5x0.8 port, no sensor magnet, R axial inlet, 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 PB6X20RLB 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 is 19.8 N and the pull is 14.8 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 a fixed TPU bumper at each end that decelerates the piston over the last few millimeters, but it is not adjustable or a locking brake. If you are moving real tooling mass at higher speeds, you should meter-out the exhaust or add an external shock absorber. The piston will drift if air is lost, so an external rod lock is needed for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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