Airtac PTB Single Acting Pen-Type Cylinder PTB12X5SCB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB12X5SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø12mm bore and 5mm 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
- Stroke5 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 PTB12X5SCB
The AirTAC PTB12X5SCB is a JIS pen-size single-acting pull cylinder where air entering the M5x0.8 port retracts the rod, and exhausting air lets the spring push it back out. This fail-safe extended state is ideal for holding parts when pneumatic pressure drops. With a 12 mm bore and 5 mm stroke, it yields 33.1 N of net pull at 0.5 MPa and 51.8 N at 0.7 MPa.
Because the powered stroke acts on the smaller rod-side annular area, this usable pulling force is lower than the equivalent push cylinder. The SUS304 stainless barrel and slim body fit tight jigs, while the CB double clevis allows pivoting mount. A built-in magnet enables position sensing with reed or electronic switches. Plan for a safe working load of about 20 N, which is roughly 60 percent of the 0.5 MPa rating.
Airtac PTB Single Acting Pen-Type Cylinder PTB12X5SCB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB12X5SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 5 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 PTB12X5SCB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 12 | Bore size in mm. |
| ×5 | 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 PTB12X5SCB Is Used
Pivoting Hold-Down Clamp
Uses the CB clevis to swing into position, pulling the rod back to grip components securely while the spring ensures release on air loss.
Wire Belt Tensioner
Applies steady pulling force to maintain tension in light conveyance belts, automatically extending to relieve slack when air is removed.
Return-to-Home Actuator
Drives a small mechanism to a retracted working position, relying on the fail-safe extended state to reset the assembly safely.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB12X5SCB the Right Cylinder?
This 12 mm bore generates 33.1 N net pull at 0.5 MPa. If your task needs less force, the 10 mm bore offers 23.5 N; stepping up to the 16 mm bore provides 65.0 N. The internal return spring sets a 0.2 MPa minimum pressure before motion begins, and the rod stays extended safely upon air loss.
The CB double clevis accommodates pivoting loads, and the M10x1.0 rod-end thread secures tooling. The fixed TPU bumper decelerates the final few millimeters of travel, but at high speeds with real mass, meter-out the exhaust or add an external shock absorber. The Ø5 mm rod handles coaxial thrust well, yet over long strokes or off-axis loads you should add an external guide to prevent side-load damage.
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 PTB12X5SCB FAQ
It provides 33.1 N net pull at 0.5 MPa and 51.8 N at 0.7 MPa maximum. The internal spring requires at least 0.2 MPa to overcome its bias and retract the rod. Without air, the spring holds the rod in the extended position.
The fixed TPU bumper absorbs impact during the final millimeters of travel but is not adjustable. The built-in S magnet works with AirTAC reed or electronic switches for end-of-stroke detection.
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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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