Airtac PB Pen-type Cylinder PB6X40SR
The AirTAC Airtac PB Pen-type Cylinder PB6X40SR is a double-acting pen-size (mini) air cylinder with a Ø6mm bore and 40mm 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
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM5×0.8
- CushionElastic bumper (both ends)
About the Airtac PB Pen-type Cylinder PB6X40SR
The AirTAC PB6X40SR is a double-acting JIS pen-size mini cylinder engineered for compact, high-frequency small-part motion. It features a slim SUS304 stainless steel barrel and piston rod, offering excellent durability in damp or mildly corrosive environments while keeping end-of-arm tooling exceptionally light. Delivering 14.2 N of push force at 0.5 MPa, it operates at speeds from 50-800 mm/s.
This specific configuration includes an axial R back cover for in-line plumbing and a built-in S piston magnet for position sensing. Air enters via an M5x0.8 port, driving the Ø3 mm rod with an M5x0.8 rod-end thread. Deceleration is handled by a fixed TPU bumper at each end, which absorbs impact over the final few millimeters of travel rather than acting as a lock.
Airtac PB Pen-type Cylinder PB6X40SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB6X40SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø6 mm |
| Rod diameter | Ø3 mm |
| Stroke | 40 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 PB6X40SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 6 | Bore size in mm. |
| ×40 | 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 PB6X40SR Is Used
PCB Pick-and-Place
Drives lightweight vacuum nozzles in electronics assembly to lift and position delicate printed circuit boards without adding excessive mass to the robotic arm.
Pharmaceutical Labeling
Actuates a small tamping blade to press foil labels onto medicine vials, fitting neatly within the tight mechanical clearances of high-speed packaging lines.
Lab Sample Diverting
Pushes a diverter gate on a diagnostic analyzer carousel to route blood sample tubes, benefiting from the SUS304 build in humid laboratory environments.
Is the Airtac PB Pen-type Cylinder PB6X40SR the Right Cylinder?
When sizing this actuator, plan for a safe working load of about 9 N at 0.5 MPa, accounting for roughly 60% of the theoretical 14.2 N push force to overcome seal friction and ensure smooth travel. Vertically, this equates to lifting approximately 0.7 kg with a sane 2:1 safety margin. If you need slightly less force, the Ø4 bore offers 6.3 N push at 0.5 MPa; stepping up to the Ø10 bore yields 39.3 N push at 0.5 MPa for heavier tooling.
Because the Ø3 mm rod is slender and built for coaxial thrust, avoid side loads and add an external linear bearing over longer strokes. Note 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. Confirm your ordering essentials: 6 mm bore, 40 mm stroke, M5x0.8 port, S magnet, and R axial inlet.
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 PB6X40SR FAQ
This double-acting single-rod cylinder generates a push force of 14.2 N and a pull force of 10.6 N at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, the push force is 19.8 N and the pull force is 14.8 N. It operates between 0.15-0.7 MPa at speeds of 50-800 mm/s.
The S code indicates a built-in piston magnet, allowing you to track stroke position using AirTAC reed or electronic switches. The R designation means it uses an axial air inlet for straight in-line plumbing via the M5x0.8 port. The fixed TPU bumpers at each end decelerate the rod near the stroke limits but are not adjustable.
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Related AirTAC PB Pen-Size Cylinders
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