Airtac PB Pen-type Cylinder PB12X85SCB
The AirTAC Airtac PB Pen-type Cylinder PB12X85SCB 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)
About the Airtac PB Pen-type Cylinder PB12X85SCB
The AirTAC PB12X85SCB is a JIS pen-size double-acting single-rod 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 without adding unnecessary bulk to your end-of-arm tooling. Delivering 56.5 N of push force at 0.5 MPa, it integrates a built-in magnet for position sensing and a CB double clevis for pivoting loads.
This 12 mm bore unit travels an 85 mm stroke and uses an M5x0.8 air port paired with an M10x1.0 rod-end thread. 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 high tooling masses at speed. The Ø5 mm rod provides coaxial thrust, but over this 85 mm length you should add an external guide if the assembly sees off-axis loads.
Airtac PB Pen-type Cylinder PB12X85SCB Technical Specifications
| Model | Airtac PB Pen-type Cylinder PB12X85SCB |
|---|---|
| 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 PB12X85SCB
| 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 PB12X85SCB Is Used
PCB Depaneling Jigs
Actuates a cutting blade carriage in tight electronics assembly cells where the stainless body resists flux fumes and the slim profile fits between routing lanes.
Pouch Sealing Arms
Drives a pivoting heat-seal bar via the CB clevis on vertical form-fill equipment, cycling rapidly to crimp small retail sachets without overloading the frame.
Lab Sample Diverters
Pushes a diverter flap to route vials into testing carousels, using the S magnet to confirm home position before the next fluid dispense cycle begins.
Is the Airtac PB Pen-type Cylinder PB12X85SCB the Right Cylinder?
Choosing this model means stepping up from the 10 mm bore (39.3 N push at 0.5 MPa) or down from the 16 mm bore (100.5 N push at 0.5 MPa) to hit your exact spatial and force targets. For real-world sizing, plan for a safe working load of about 34 N at 0.5 MPa, which accounts for seal friction and smooth travel rather than the raw theoretical rating. If you need to lift a part vertically against gravity, this actuator handles approximately 2.9 kg with a sensible 2:1 safety margin.
When ordering, confirm the 12 mm bore, 85 mm stroke, M5x0.8 port, S magnet for reed or electronic switches, and the CB double clevis back cover. 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 load 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 PB12X85SCB FAQ
This 12 mm bore double-acting cylinder delivers 56.5 N push and 46.7 N pull at 0.5 MPa, with maximums of 79.1 N push and 65.4 N pull at 0.7 MPa. It operates between 0.15-0.7 MPa, runs at speeds of 50-800 mm/s, and has an M5x0.8 port with an M10x1.0 rod-end thread.
The CB back cover provides a double clevis pin joint ideal for pivoting linkages. Deceleration comes from a fixed TPU bumper at each end that absorbs impact over the final few millimeters; it is not adjustable, so for heavy or fast pivoting masses you should meter-out the exhaust or add an external shock absorber.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC PB Pen-Size Cylinders
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