Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR
The AirTAC Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR is a single acting, pull type (spring extend) pen-size mini cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke5 mm
- Port sizeM5×0.8
- Acting typePull, single acting
- Rod threadM10×1.0
- ReturnSpring
About the Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR
The AirTAC PTB16X5SR is a JIS pen-size single-acting pull cylinder where air entering the single M5x0.8 port retracts the rod, while an internal spring extends it back out. It provides 65 N of net pull at 0.5 MPa (101.2 N at 0.7 MPa), with the return spring force already subtracted. The built-in magnet allows position sensing with reed or electronic switches.
This slim SUS304 stainless body saves space in tight jigs and light end-of-arm tooling. Because it pulls on the smaller rod-side area, output is lower than a matching push cylinder, so size accordingly. The fixed TPU bumper decelerates the stroke near the ends, and the rod fails safe in the extended position on air loss.
Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR Technical Specifications
| Model | Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR |
|---|---|
| Series | PTB JIS pen-size mini cylinder |
| Bore size | Ø16 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 (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 PTB16X5SR
| PTB | JIS pen-size single acting, pull type (spring extend) mini-cylinder series. |
|---|---|
| 16 | 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 PTB16X5SR Is Used
Hold-Down Clamp
Uses the spring-extended rod to hold parts securely by default, requiring air only to lift and release the clamp.
Wire Tensioner
Maintains constant tension on a wire or belt in its relaxed state, pulling back only when pressurized.
Retract-to-Open Gate
Keeps a diverting gate closed via spring force until a pneumatic signal pulls the gate open.
Is the Airtac PTB Single Acting Pen-Type Cylinder PTB16X5SR the Right Cylinder?
At 0.5 MPa this 16 mm bore yields 65 N of usable pull. Stepping down to a 12 mm bore gives 33.1 N, while this is the largest single-acting pen size available. Plan for a safe working load of about 39 N (roughly 60% of the rated figure) to account for seal friction and smooth travel. A vertical hold with a 2:1 safety margin supports approximately 3.3 kg.
The internal spring sets a 0.2 MPa minimum pressure before motion begins and ensures the rod stays extended if air fails. The Ø5 mm rod handles coaxial thrust well; for off-axis loads add an external guide. This configuration includes the S magnet for sensing and the R axial inlet for in-line plumbing.
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 PTB16X5SR FAQ
The net pull force is 65 N at 0.5 MPa and 101.2 N at 0.7 MPa (maximum pressure). Because the internal spring opposes motion, a minimum of 0.2 MPa is required to retract the rod. Upon air loss, the spring automatically extends the rod to a fail-safe out position.
Yes, the S suffix denotes a built-in piston magnet compatible with AirTAC reed or electronic switches. Cushioning is handled by a fixed TPU bumper at each end that absorbs impact in the final few millimeters; for high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber.
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Related AirTAC PTB Pen-Size Cylinders
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