Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø12mm bore and 30mm stroke. A single air port drives the pull stroke; the built-in return spring resets the rod when air is released, so only one solenoid line is needed.
- BoreØ12 mm
- Stroke30 mm
- Port sizeM5×0.8
- Acting typePull, single acting
- Rod threadM10×1.0
- ReturnSpring
- 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 PTB Single Acting Pen-Type Cylinder PTB12X30SCB
The AirTAC PTB12X30SCB is a JIS pen-size single-acting pull cylinder where air entering the M5x0.8 port retracts the rod, and an internal spring pushes it back out. You get 33.1 N of net pull at 0.5 MPa (51.8 N at the 0.7 MPa maximum). Because the return spring constantly opposes the air stroke, a minimum 0.2 MPa is required before motion begins.
This 12 mm bore unit features a built-in piston magnet for electronic or reed switches, a fixed TPU bumper at each end, and a CB double clevis back cover for pivoting loads. The slim SUS304 stainless body saves space on light end-of-arm tooling. Plan for a safe working load of about 20 N, which is roughly 60 percent of the rated 0.5 MPa force to account for seal friction.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 30 mm |
| Acting type | Single acting, pull type (spring extend) |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Return | Return spring (pull by air) |
| Max standard stroke | Up to 60 mm |
The spring holds the rod extended; applying air retracts it, and removing air lets the spring push the rod back out. Forces below are the NET spring-deducted values from the AirTAC thrust table. Confirm against the product label before installation.
Net Pull Force (Ø12mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 33.1 N |
| 0.7 MPa (max) | 51.8 N |
These are the usable pull forces after the return spring is subtracted, taken directly from the AirTAC single-acting thrust table. Minimum operating pressure is set by the spring, so this model needs at least the lower pressure shown to move.
Model Code: Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| R | Back cover: R axial inlet (bore-dependent). |
Mounting accessories: LB, FA, CJ. Related PB-family variants: PB (double acting), PSB (single-acting push), PBD (double rod), PBR (front-mount).
Where the Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB Is Used
Pivoting Hold-Down Clamp
Uses the CB double clevis to swing into position; air retracts the rod to clamp, and the spring fails safe to the open position.
Wire Belt Tensioner
Applies steady pulling force on a belt run; the spring maintains tension automatically when shop air is removed.
Retract-to-Open Gate
Pulls a lightweight diverter gate shut during cycling and lets the spring push it open to a safe home state upon exhaust.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB the Right Cylinder?
When sizing this unit against neighbors, the Ø10 bore yields 23.5 N while the Ø16 provides 65.0 N of net pull at 0.5 MPa. This 12 mm model splits the difference nicely at 33.1 N. Remember the fail-safe behavior: if air pressure drops, the spring forces the rod to the extended position, not a locked mid-stroke.
The Ø5 mm rod is built for coaxial thrust, so over this 30 mm stroke add an external linear bearing if you encounter off-axis loads. The fixed TPU bumper only decelerates the last few millimeters of travel; with heavy tooling mass at mid to high speeds, meter-out the exhaust or install an external shock absorber to prevent bottoming out.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 mm (single-acting limit)
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 0.7 MPa operating pressure.
- check Allow for spring force in the stroke direction.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SCB FAQ
It provides 33.1 N of net pull at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. The internal return spring dictates a 0.2 MPa minimum pressure before the rod can move, and the rod fails safe to the extended position on air loss.
The built-in magnet works with both AirTAC reed and electronic solid-state switches. Cushioning relies on a fixed TPU bumper that absorbs impact over the last few millimeters; it is not adjustable, so add external shock absorption for heavy loads at high speeds.
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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 PTB Pen-Size Cylinders
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