Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SR
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SR 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 PTB12X15SR
The AirTAC PTB12X15SR is a JIS pen-size mini cylinder configured for single-acting pull operation. Air entering the single M5x0.8 port retracts the Ø5 mm rod, while an internal spring pushes it back out upon exhaust release. This provides 33.1 N of net pull force at 0.5 MPa, acting on the smaller rod-side annular area. The built-in -S magnet enables position sensing with reed or electronic switches.
If air pressure drops, the spring ensures the rod fails safe in the extended position. The SUS304 stainless barrel and slim body save space in tight jigs. For practical sizing, plan for about 20 N of real work, which is roughly 60 percent of the rated 0.5 MPa figure to account for seal friction. The fixed TPU bumper decelerates the stroke endpoints across this 15 mm travel.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SR Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SR |
|---|---|
| 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 PTB12X15SR
| 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 PTB12X15SR Is Used
Hold-Down Clamping
Uses spring pressure to keep a light workpiece extended and safely raised, applying air only to pull the clamp open.
Wire Tensioner
Maintains steady pulling tension on a filament or belt through spring force, venting air to slacken the line.
Return Actuator
Pulls a secondary mechanism out of the way during processing and lets the spring push it home when air is removed.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X15SR the Right Cylinder?
Choosing this 12 mm bore means accepting the rod-side pull limits: 33.1 N at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. Stepping down to a 10 mm bore drops the usable pull to 23.5 N, while moving up to a 16 mm bore increases it to 65.0 N. Because the internal spring opposes motion, a minimum 0.2 MPa pressure is required before the rod retracts. This PTB12X15SR variant includes the R axial inlet for inline plumbing and the S magnet for switch mounting.
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 PTB12X15SR FAQ
The net pull force is 33.1 N at 0.5 MPa and 51.8 N at 0.7 MPa. The internal return spring requires a minimum 0.2 MPa of air pressure to overcome the spring and retract the rod.
The fixed TPU bumper cushions the last few millimeters of travel but is not adjustable; at high speeds with heavy tooling, meter-out the exhaust. The built-in S magnet works with reed or electronic switches for position detection.
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
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