Airtac PTB Single Acting Pen-Type Cylinder PTB16X50SCB
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X50SCB is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm bore and 50mm 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.
- BoreØ16 mm
- Stroke50 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 PTB16X50SCB
The AirTAC PTB16X50SCB 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 65 N of net pull at 0.5 MPa or 101.2 N at the 0.7 MPa maximum. Because the powered stroke acts on the rod-side area, this pull rating is lower than a matching push cylinder, ensuring right-sized tensioning.
This configuration includes a built-in piston magnet for electronic or reed sensing and a CB double clevis for pivoting loads. The SUS304 stainless body and fixed TPU bumper suit tight jigs. If air pressure drops, the spring forces the rod to the extended state, creating a fail-safe return for hold-down or tensioning tasks.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X50SCB Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X50SCB |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 50 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 (Ø16mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 65.0 N |
| 0.7 MPa (max) | 101.2 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 PTB16X50SCB
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×50 | 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 PTB16X50SCB Is Used
Hold-Down Clamping
Uses the spring-extended rod to keep a workpiece secured. Air retracts the pin for quick part changes.
Belt Tensioner
Applies steady pull on a belt or wire. The clevis mount pivots to maintain alignment as tension varies.
Retract-To-Open Gate
Pulls a diverter gate closed against a stop. Loss of air pressure safely extends the gate back open.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X50SCB the Right Cylinder?
At 0.5 MPa this 16 mm bore generates 65 N of usable pull. Stepping down to a 12 mm bore yields 33.1 N, while the 6 mm bore offers just 7.1 N. Since 16 mm is the largest PTB option, moving up requires a double-acting PB series. Plan for a safe working load of roughly 39 N, which is about 60 percent of the rated figure, to account for seal friction.
The internal return spring sets a 0.2 MPa minimum pressure before motion begins. The CB double clevis accommodates pivoting mounts, and the M10x1.0 rod end handles tooling. With a 50 mm stroke, the slender Ø5 mm rod needs an external guide to prevent side-loading 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 PTB16X50SCB FAQ
It delivers 65 N of net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. The internal spring requires at least 0.2 MPa to retract the rod. If air fails, the spring forces the rod to the extended position.
The fixed TPU bumper decelerates the rod over the last few millimeters of travel. At high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber. The built-in magnet works with reed or electronic switches.
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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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