Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SR
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SR 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 PTB12X30SR
The AirTAC PTB12X30SR is a JIS pen-size single-acting pull cylinder where air entering one M5x0.8 port retracts the rod, and an internal spring pushes it back out. It provides 33.1 N of net pull at 0.5 MPa and 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 12 mm bore, 30 mm stroke variant features a built-in magnet for position sensing and an R axial inlet for in-line plumbing. The slim SUS304 stainless body and fixed TPU bumper save space in tight jigs. 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 PTB12X30SR Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SR |
|---|---|
| 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 PTB12X30SR
| 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 PTB12X30SR Is Used
Hold-Down Clamp
Uses spring pressure to keep a workpiece extended, then applies 33.1 N of pull at 0.5 MPa to release it during machining cycles.
Wire Tensioner
Maintains constant tension on a filament or wire spool, retracting the guide only when compressed air is supplied.
Retract-to-Open Gate
Spring holds a diverter gate closed by default; energizing the single port pulls the gate open to redirect parts.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X30SR the Right Cylinder?
Select this model when you need 33.1 N of net pull at 0.5 MPa with a fail-safe extended state on air loss. If your task requires less force, the Ø10 bore offers 23.5 N; stepping up to the Ø16 bore yields 65.0 N. The Ø5 mm rod is built for coaxial thrust, so over this 30 mm stroke add an external guide for any off-axis loads.
Confirm the M10x1.0 rod-end thread and single air line valving suit your jig. The fixed TPU bumper only decelerates the final few millimeters, so with heavy tooling mass meter-out the exhaust or add an external shock absorber.
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 PTB12X30SR FAQ
The net pull force is 33.1 N at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. Because the internal spring opposes the air stroke, a minimum pressure of 0.2 MPa is required before the rod moves. On air loss, the spring fail-safes to the extended position.
Yes, the built-in S magnet works with both reed and electronic switches. The cylinder uses a fixed TPU bumper that decelerates the rod over the last few millimeters; it is not adjustable, so at high speeds with real mass you should meter-out the exhaust or add an external shock absorber.
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 PTB12X30SR
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.