Airtac PB Pen-type Cylinder PB12X40SR
The AirTAC Airtac PB Pen-type Cylinder PB12X40SR is a double-acting pen-size (mini) air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM10×1.0
- 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 PB12X40SR
The AirTAC PB12X40SR is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It features a 12mm bore and 40mm stroke, generating 56.5 N of push force and 46.7 N of pull force at 0.5 MPa. The slim SUS304 stainless steel barrel and piston rod provide corrosion resistance for damp production areas while keeping weight low for end-of-arm tooling. This specific configuration includes an R axial air inlet for in-line plumbing and an integrated S magnet for position sensing.
Air enters via the M5x0.8 port to drive the Ø5 mm rod, which terminates in an M10x1.0 thread for secure load coupling. End-of-stroke energy is managed by a fixed TPU bumper at each end rather than an adjustable air cushion. Because the bumper only decelerates the final few millimeters, high-speed cycles with heavy tooling require metering out the exhaust or adding an external shock absorber. The built-in magnet supports AirTAC reed or electronic switches to track piston position accurately.
Airtac PB Pen-type Cylinder PB12X40SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X40SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 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 300 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 56.5 N | 46.7 N |
| 0.7 MPa (max) | 79.1 N | 65.4 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 PB12X40SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | 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 PB12X40SR Is Used
PCB Component Placement
Drives a compact pick-and-place head on a surface mount line, using the S magnet to confirm pick stroke and the slim body to fit dense nozzle arrays.
Pouch Sealing Clamp
Actuates a small hold-down jaw on a vertical form-fill-seal machine, applying up to 34 N of safe clamping force without crushing delicate film.
Lab Dispenser Valve
Toggles a micro-dispense valve for reagent routing, where the SUS304 construction resists humidity and the R axial inlet keeps the footprint minimal.
Is the Airtac PB Pen-type Cylinder PB12X40SR the Right Cylinder?
Selecting this 12mm bore provides a middle-ground solution within the PB family. If your application requires less force, stepping down to the Ø10 bore yields 39.3 N of push at 0.5 MPa. If you need more power, stepping up to the Ø16 bore provides 100.5 N of push at 0.5 MPa.
When ordering, confirm the essentials: 12mm bore, 40mm stroke, M5x0.8 port, S magnet for sensing, and the R axial back cover for straight-line plumbing. Note 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. If your process requires a fail-safe hold against gravity, you must incorporate an external stop or a dedicated rod lock. Additionally, the Ø5 mm rod is designed for coaxial thrust, so avoid side loads or add an external linear bearing over long strokes.
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 PB12X40SR FAQ
At 0.5 MPa, the push force is 56.5 N and the pull force is 46.7 N. At the maximum operating pressure of 0.7 MPa, the push force is 79.1 N and the pull force is 65.4 N. The operating pressure range is 0.15-0.7 MPa, with a speed range of 50-800 mm/s.
This model uses a fixed TPU bumper at each end to decelerate the piston over the final few millimeters; it is not an adjustable air cushion, so heavy high-speed loads may need external shock absorption. The built-in S magnet allows you to mount AirTAC reed or electronic switches directly onto the cylinder body to detect piston position.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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