Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SCB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø12mm bore and 15mm 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
- Stroke15 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 PTB12X15SCB
The AirTAC PTB12X15SCB 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, rising to 51.8 N at the 0.7 MPa maximum. Because the return spring constantly resists the air stroke, a minimum 0.2 MPa is required before motion begins.
This variant includes a built-in piston magnet for electronic or reed switches and a CB double clevis rear mount for pivoting loads. The slim SUS304 stainless body saves space on tight jigs. For practical sizing, plan for about 20 N of real work (roughly 60 percent of the rated force) to account for friction, and note the fixed TPU bumper only decelerates the final few millimeters of travel.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SCB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 15 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 PTB12X15SCB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×15 | 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 PTB12X15SCB Is Used
Hold-Down Clamping
Keeps a workpiece secured by default; applying air retracts the clamp to release the part safely.
Wire Belt Tensioner
The CB clevis pivots smoothly while the spring maintains steady outward tension on a moving line.
Retract-To-Open Gate
Holds a guide gate closed via spring force, using the 15 mm pull stroke to open it on demand.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SCB the Right Cylinder?
Choosing this 12 mm bore gives 33.1 N net pull at 0.5 MPa. If your task is lighter, the 10 mm bore yields 23.5 N; if you need more power, the 16 mm bore provides 65.0 N. Remember the spring holds the rod extended by default, making it fail-safe out for hold-down clamping. The CB double clevis requires a matching pivot pin.
The Ø5 mm piston rod uses an M10x1.0 end thread. Because the rod is slender, add an external linear bearing if you experience any off-axis loads. At higher cycling speeds with heavy tooling, meter-out the exhaust or add an external shock absorber, as the fixed TPU bumper has limited energy absorption.
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 PTB12X15SCB FAQ
The net pull force is 33.1 N at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. The internal return spring creates resistance, so a minimum of 0.2 MPa is required before the rod can move.
Yes, the S suffix indicates a built-in piston magnet. It is compatible with both reed and electronic switches. The fixed TPU bumper handles end-of-stroke deceleration but is not an adjustable cushion.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC PTB Pen-Size Cylinders
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