Airtac PB Pen-type Cylinder PB6X20SR
The AirTAC Airtac PB Pen-type Cylinder PB6X20SR 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 PB6X20SR
The AirTAC PB6X20SR is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It features a slim SUS304 stainless steel barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while keeping weight low for end-of-arm tooling. Delivering 14.2 N of push force at 0.5 MPa, it occupies minimal space where traditional bodies cannot fit.
This 6 mm bore unit travels a 20 mm stroke and integrates a built-in piston magnet (S code) for position detection via AirTAC reed or electronic switches. Pneumatic connection is through an R axial air inlet using an M5x0.8 port. Deceleration relies on a fixed TPU bumper at each end, which absorbs impact over the final few millimeters rather than providing adjustable cushioning.
Airtac PB Pen-type Cylinder PB6X20SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X20SR |
|---|---|
| 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 PB6X20SR
| 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 PB6X20SR Is Used
PCB Pick-and-Place
Drives a tiny vacuum nozzle on a surface mount machine, utilizing the lightweight pen-size body and 14.2 N thrust to lift delicate electronic components without adding payload to the gantry.
Blister Pack Sorting
Pushes small pharmaceutical blister packs into a diverting chute, where the integrated S magnet confirms the 20 mm stroke position via a reed or electronic switch before the conveyor advances.
Lab Reagent Dispensing
Actuates a micro-valve on an automated analyzer, relying on the SUS304 stainless construction to withstand humid, mildly corrosive laboratory environments during high-frequency test cycles.
Is the Airtac PB Pen-type Cylinder PB6X20SR the Right Cylinder?
When sizing this actuator, plan for a safe working load of roughly 9 N at 0.5 MPa, accounting for seal friction and smooth travel. For vertical lifts, this equates to raising about 0.7 kg with a sane 2:1 safety margin. If you need less force, note that the Ø4 bore is the only step down in this family, whereas stepping up to a Ø10 bore significantly increases capability to 39.3 N push at 0.5 MPa. Keep in mind a plain PB cylinder drifts if air pressure is lost or the valve is centered, so an external rod lock is required for fail-safe holding.
Confirm your ordering essentials: 6 mm bore, 20 mm stroke, M5x0.8 port, S magnet for sensors, and R axial inlet. The Ø3 mm rod handles coaxial thrust well, but over extended strokes or off-axis loads you should add an external linear guide to prevent binding. Because the fixed TPU bumper is not adjustable, metering out the exhaust or adding an external shock absorber is recommended when moving real tooling mass at higher speeds.
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 PB6X20SR FAQ
This double-acting cylinder generates 14.2 N push and 10.6 N pull at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, it produces 19.8 N push and 14.8 N pull. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s, with a proof pressure of 1.2 MPa.
It uses a fixed TPU bumper at each end to decelerate the piston over the final few millimeters, which is not field-adjustable. The S code indicates a built-in magnet that allows you to mount AirTAC reed or electronic switches directly onto the body for precise end-of-stroke detection.
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Standard models usually ship in 3-4 days.
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