Airtac PB Pen-type Cylinder PB6X20R
The AirTAC Airtac PB Pen-type Cylinder PB6X20R 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)
About the Airtac PB Pen-type Cylinder PB6X20R
The AirTAC PB6X20R is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency tasks. It provides a 14.2 N push and 10.6 N pull at 0.5 MPa, driven through an M5x0.8 port. The slim SUS304 stainless round barrel and screwed-in covers make it inherently suitable for damp or mildly corrosive production lines, while keeping end-of-arm tooling extremely light.
This 6 mm bore unit travels a 20 mm stroke and relies on a fixed TPU bumper at each end to decelerate the piston over the final few millimeters. Because the R back cover features an axial air inlet, plumbing stays perfectly in-line with the body for neat manifold routing. The Ø3 mm piston rod has an M5x0.8 rod-end thread for direct load coupling and operates at speeds from 50 to 800 mm/s.
Airtac PB Pen-type Cylinder PB6X20R Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X20R |
|---|---|
| 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 PB6X20R
| 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 PB6X20R Is Used
PCB Probe Testing
Drives delicate spring-loaded test pins onto printed circuit boards, where the slim 6 mm barrel clears adjacent connectors and the 14.2 N push ensures reliable contact without damaging the traces.
Blister Pack Sealing
Cycles a small heat seal head against polymer films in tight packaging machinery, benefiting from the 50-800 mm/s speed range and fixed TPU bumpers to maintain rhythm without harsh impact.
Lab Reagent Dispensing
Actuates a micro-valve or syringe plunger for fluid metering in analytical instruments, using the SUS304 stainless construction to withstand humid laboratory environments.
Is the Airtac PB Pen-type Cylinder PB6X20R the Right Cylinder?
When sizing this actuator, plan for a real safe working load of roughly 9 N, which accounts for seal friction at 60 percent of the 14.2 N theoretical push at 0.5 MPa. For vertical lifts, this equates to hoisting about 0.7 kg safely with a 2:1 margin. If your application requires slightly less force, the Ø4 bore offers 6.3 N of push at 0.5 MPa; if you need to step up, the Ø10 bore provides 39.3 N. Note that a plain cylinder drifts when air is lost or the valve is centered, so fit an external rod lock if the payload must hold position.
To order this exact configuration, confirm the 6 mm bore, 20 mm stroke, M5x0.8 porting, and the R axial inlet. This specific model lacks the internal magnet, so position sensing is not available without selecting an -S variant. Keep the thin Ø3 mm rod coaxial to avoid side loading, adding a linear bearing if guiding heavier off-axis masses.
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 PB6X20R FAQ
This double-acting cylinder delivers a push of 14.2 N and a pull of 10.6 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push is 19.8 N and the pull is 14.8 N. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s.
No, a plain PB cylinder 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 brake. For fail-safe vertical holding, you must install an external stop or rod lock.
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Related AirTAC PB Pen-Size Cylinders
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