Airtac PB Pen-type Cylinder PB12X85SU
The AirTAC Airtac PB Pen-type Cylinder PB12X85SU is a double-acting pen-size (mini) air cylinder with a Ø12mm bore and 85mm 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
- Stroke85 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 PB12X85SU
The AirTAC PB12X85SU 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 weight low for end-of-arm tooling. Delivering 56.5 N of push force at 0.5 MPa, this 12 mm bore unit uses an M5x0.8 port and an M10x1.0 rod-end thread.
This specific configuration includes a built-in piston magnet (-S) for position sensing and a U-type back cover providing a 90-degree side air inlet for flat plumbing. It operates at 50-800 mm/s and relies on a fixed TPU bumper at each end to decelerate the stroke.
Airtac PB Pen-type Cylinder PB12X85SU Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X85SU |
|---|---|
| Series | PB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 85 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 PB12X85SU
| PB | JIS pen-size double-acting mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×85 | 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 PB12X85SU Is Used
PCB Depaneling Router
Pushes a small tooling pin to secure circuit boards during routing operations, utilizing the 90-degree side inlet to keep pneumatic plumbing flush against the machine frame.
Blister Pack Sealing
Cycles rapidly to clamp thin film layers in a heat sealer, where the fixed TPU bumper absorbs the end-of-stroke impact without requiring external adjustment.
Micro-Dispenser Positioning
Moves a dispensing valve nozzle into position for applying epoxy dots, relying on the built-in magnet to trigger an electronic switch for precise shot placement.
Is the Airtac PB Pen-type Cylinder PB12X85SU the Right Cylinder?
When sizing this actuator, stepping down to the Ø10 bore yields 39.3 N push at 0.5 MPa, while stepping up to the Ø16 bore provides 100.5 N, letting you tune the payload capacity precisely. The thin Ø5 mm rod is designed strictly for coaxial thrust; over the 85 mm stroke, any off-axis load requires an external guide or linear bearing to prevent binding. A plain PB-type cylinder does not hold its load if air pressure is lost or the valve is centred—the piston will drift. For a fail-safe hold, specify an external stop or rod lock. Confirm your ordering essentials: 12 mm bore, 85 mm stroke, M5x0.8 port, -S magnet, U 90-degree side inlet, and your preferred mounting bracket.
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 PB12X85SU FAQ
This 12 mm bore double-acting cylinder generates 56.5 N push and 46.7 N pull at 0.5 MPa. At the maximum operating pressure of 0.7 MPa, 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.
No, a plain PB-type cylinder drifts when air is lost or the valve is centered. The fixed TPU bumper only decelerates the piston near stroke end; it does not act as a lock. An external rod lock or mechanical stop is required for fail-safe load holding.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC PB Pen-Size Cylinders
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