Airtac PB Pen-type Cylinder PB6X20SRLB
The AirTAC Airtac PB Pen-type Cylinder PB6X20SRLB 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 PB6X20SRLB
The AirTAC PB6X20SRLB is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It utilizes a slim SUS304 stainless steel round barrel and a 3mm piston rod, providing excellent resistance in damp or mildly corrosive environments while keeping end-of-arm tooling weight to an absolute minimum. Delivering 14.2 N of push force at 0.5 MPa, it features an M5x0.8 axial air inlet and an integrated piston magnet for position sensing.
This 20mm stroke model operates at speeds from 50-800 mm/s with a maximum pressure of 0.7 MPa. 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 real tooling mass at high velocities. The built-in magnet supports AirTAC reed or electronic switches, and the included LB bracket provides a robust mounting interface for tight jig spaces.
Airtac PB Pen-type Cylinder PB6X20SRLB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X20SRLB |
|---|---|
| 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 PB6X20SRLB
| 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 PB6X20SRLB Is Used
PCB Pick-and-Place
Drives a tiny vacuum nozzle in a tight electronics assembly cell, using the 3mm rod for precise coaxial thrust without adding payload to the lightweight manipulator.
Lab Dispenser Actuation
Indexes a micro-valve for chemical reagent dosing, where the SUS304 barrel withstands humid cleanroom conditions and the compact body fits between densely packed instruments.
Small Carton Flap Folding
Tucks lightweight cardboard flaps on a secondary packaging line, relying on the LB bracket for stable mounting and the fixed TPU bumper to soften the end-of-stroke impact.
Is the Airtac PB Pen-type Cylinder PB6X20SRLB the Right Cylinder?
When sizing this actuator, plan for a safe working load of about 9 N, which accounts for roughly 60% of the 14.2 N theoretical push at 0.5 MPa to overcome seal friction and ensure smooth travel. If your vertical lift needs are higher, stepping up to the 10mm bore yields 39.3 N of push at 0.5 MPa, whereas dropping to the 4mm bore reduces the output to 6.3 N. To put this 6mm unit into perspective, it can safely lift about 0.7 kg vertically with a sane 2:1 safety margin.
Remember that a plain double-acting cylinder like this does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the stroke end rather than locking the load. For fail-safe holding, an external stop or rod lock is required. To order, confirm the 6mm bore, 20mm stroke, M5x0.8 port, S 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 PB6X20SRLB FAQ
This 6mm bore double-acting cylinder provides 14.2 N push and 10.6 N pull at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, it yields 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.
No, the piston will drift if air is removed or the valve is centered. The fixed TPU bumper only decelerates the rod near the end of its stroke and does not function as a locking brake. You must add an external rod lock or mechanical stop to suspend a load safely.
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1-Year Warranty
Covers non-human-caused product damage.
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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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