Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB 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 PTB12X30CB
The AirTAC PTB12X30CB is a JIS pen-size single-acting pull cylinder with a 12 mm bore and 30 mm stroke. A built-in spring holds the rod extended, while feeding air to the single M5x0.8 port retracts it. This fail-safe extended state is ideal for holding parts when air pressure drops. It delivers 33.1 N of net pull at 0.5 MPa and 51.8 N at 0.7 MPa.
The CB double clevis back cover accommodates pivoting loads, and the SUS304 stainless build resists corrosion in tight jigs. A fixed TPU bumper decelerates the stroke ends. Because pulling acts on the rod-side area, this output is lower than a matching push cylinder. Plan for a safe working load of about 20 N, which accounts for seal friction and smooth travel.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB |
|---|---|
| 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 PTB12X30CB
| 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 PTB12X30CB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into place, pulling 33.1 N at 0.5 MPa to grip parts securely while the spring ensures a safe release on air loss.
Wire Belt Tensioner
Maintains consistent tension on packaging lines by retracting the rod against the spring, automatically extending if pneumatic supply fails.
Retract-to-Open Gate
Air retracts the rod to pull a diverter gate open, allowing the spring to push it closed and block flow during shutdown or emergency stops.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB the Right Cylinder?
When sizing this 12 mm bore model, consider its 33.1 N net pull at 0.5 MPa. If your task needs less force, the 10 mm bore provides 23.5 N; if you need more, the 16 mm bore offers 65.0 N. The internal return spring sets a 0.2 MPa minimum pressure before motion begins. Without live air, the rod stays safely extended.
This configuration includes the CB double clevis for pivoting mounts and lacks a sensor magnet. The Ø5 mm piston rod uses an M10x1.0 end thread. For heavier tooling mass moving at mid-to-high speeds, meter-out the exhaust or add an external shock absorber, as the fixed bumper only softens the final few millimeters.
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 PTB12X30CB FAQ
It provides 33.1 N of net pull at 0.5 MPa and 51.8 N at 0.7 MPa. The internal spring requires a minimum of 0.2 MPa to overcome the return force and move the rod. If air is lost, the spring pushes the rod back out to the extended position.
The Ø5 mm rod is designed for coaxial thrust, so off-axis loads require an external linear bearing. For high speeds with real tooling mass, the fixed TPU bumper only decelerates the last few millimeters; meter-out the exhaust or add an external shock absorber to prevent bottoming out.
Authorized Export Seller
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
Request a Quote for Airtac PTB Single Acting Pen-Type Cylinder PTB12X30CB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.