Airtac PB Pen-type Cylinder PB12X55SR
The AirTAC Airtac PB Pen-type Cylinder PB12X55SR is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 55mm 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
- Stroke55 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 PB12X55SR
The AirTAC PB12X55SR is a JIS pen-size double-acting single-rod mini cylinder engineered for compact, high-frequency motion. It delivers a theoretical push of 56.5 N and pull of 46.7 N at 0.5 MPa, driven through a 12 mm bore and 55 mm stroke. The slim SUS304 stainless barrel and piston rod provide dependable corrosion resistance for damp production areas, while the M5x0.8 port keeps pneumatic plumbing compact.
This unit features a built-in piston magnet (-S) for position sensing using AirTAC reed or electronic switches, alongside an R axial inlet for in-line air routing. End-of-stroke deceleration relies on a fixed TPU bumper rather than an adjustable air cushion.
Airtac PB Pen-type Cylinder PB12X55SR Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X55SR |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 55 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 PB12X55SR
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×55 | 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 PB12X55SR Is Used
Blister Pack Sealing
Closes a small heated platen in a packaging line, where the axial R inlet allows straight manifold connection and the SUS304 body withstands humid sealing environments.
Lab Dispense Valve
Actuates a precision fluid nozzle for reagent dosing, using the integrated magnet with an electronic switch to confirm stroke completion before the next cycle.
Is the Airtac PB Pen-type Cylinder PB12X55SR the Right Cylinder?
When sizing this 12 mm bore actuator, compare its 56.5 N push at 0.5 MPa against the adjacent options. Stepping down, the 10 mm bore yields 39.3 N of extend force; stepping up, the 16 mm bore provides 100.5 N. Confirm your ordering essentials: 12 mm bore, 55 mm stroke, M5x0.8 port, S magnet, R axial back cover, and any LB/FA/CJ mounting bracket.
Remember that a standard pen-size body lacks position holding capability. If air pressure drops or the valve centers, the piston will drift, and the fixed bumper only decelerates impact near the stroke end rather than locking the load. You must add an external rod lock or mechanical stop for fail-safe vertical holding.
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 PB12X55SR FAQ
At 0.5 MPa this 12 mm bore cylinder provides 56.5 N push and 46.7 N pull. At the maximum 0.7 MPa operating pressure, it yields 79.1 N push and 65.4 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 without live pressure. The fixed TPU bumper only decelerates the rod near the end of its 55 mm travel; it does not function as a brake. You must install an external mechanical stop or rod lock to suspend loads safely during air loss.
Authorized Export Seller
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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