Airtac PTB Single Acting Pen-Type Cylinder PTB12X60CB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X60CB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø12mm bore and 60mm 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
- Stroke60 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 PTB12X60CB
The AirTAC PTB12X60CB is a JIS pen-size single-acting pull cylinder featuring a 12mm bore and 60mm stroke. Air entering the single M5x0.8 port retracts the rod, while an internal spring pushes it back out upon exhaust release. This spring-extend design ensures the rod fails safe in the extended position during air loss, making it ideal for holding or return-to-home tasks. It yields a 33.1 N net pull at 0.5 MPa.
Built with a SUS304 stainless barrel and a slim mini body, it saves space in tight jigs and light end-of-arm tooling. The CB double clevis back cover accommodates pivoting loads. A fixed TPU bumper decelerates the stroke near the ends. Because pulling acts on the smaller rod-side area, this net force is lower than a matching push cylinder, so right-sizing is essential.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X60CB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X60CB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 60 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 PTB12X60CB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×60 | 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 PTB12X60CB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into place; air retracts the rod to clamp, and the spring fails safe extended to release the part.
Wire Belt Tensioner
Pulls a tensioning idler back against a belt; losing air pressure lets the spring push the rod out to maintain baseline tension.
Retract-to-Open Gate
Air pulls the rod in to open a small diverter gate on a conveyor, while exhaust safely springs the gate closed.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X60CB the Right Cylinder?
This 12mm bore provides a 33.1 N net pull at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. If you need less force, the Ø10 bore offers 23.5 N at 0.5 MPa; for heavier loads, step up to the Ø16 bore with 65.0 N. The internal return spring sets a 0.2 MPa minimum pressure before motion begins. Plan for a safe working load of about 20 N, which is roughly 60 percent of the 0.5 MPa rating, to account for seal friction.
With a 60mm stroke, the thin Ø5mm rod requires an external guide or linear bearing if subjected to off-axis loads to prevent buckling. The CB double clevis inlet is standard for pivoting mounts. Confirm your valving only needs one solenoid line to drive the retraction stroke.
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 PTB12X60CB 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 spring requires a minimum of 0.2 MPa before the rod can move. Upon air loss, the spring pushes the rod to the extended position.
It uses a fixed TPU bumper at each end to decelerate the last few millimeters of travel. Because the bumper is not adjustable, you should meter-out the exhaust or add an external shock absorber when moving real tooling mass at higher speeds.
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