Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR is a single acting, pull type (spring extend) pen-size mini cylinder with direct front-cover mounting (M5×0.8 thread). A single air port drives the pull stroke on a Ø16mm bore, 75mm stroke; the return spring resets the rod when air is released.
- BoreØ16 mm
- Stroke75 mm
- Port sizeM5×0.8
- Front-mount threadM5×0.8
- Acting typePull, single acting
- ReturnSpring
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR
The AirTAC PTBR16X75SR is a JIS pen-size single-acting pull cylinder with a 75mm stroke and built-in magnet. Air entering the M5x0.8 port retracts the rod, while a spring pushes it back out, ensuring fail-safe extension on air loss. It provides 65N of net pull at 0.5MPa and 101.2N at 0.7MPa, with the spring force already deducted.
You bolt this actuator directly via its M5x0.8 front-cover thread, saving space in tight assemblies. The SUS316L stainless barrel and Ø5mm rod resist corrosion, while a fixed TPU bumper cushions the end strokes. Plan for a safe working load of about 39N (roughly 60% of the 0.5MPa rating) to ensure smooth travel against seal friction.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 75 mm |
| Acting type | Single acting, pull type (spring extend) |
| Front-mount thread | M5×0.8 |
| Port size | M5×0.8 |
|---|---|
| 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 100 mm |
The spring holds the rod extended; applying air retracts it, and removing air lets the spring push the rod back out. Front cover carries the mounting thread (M5×0.8); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Pull Force (Ø16mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 65.0 N |
| 0.7 MPa (max) | 101.2 N |
These are usable pull forces after the return spring is subtracted, 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 PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 16 | Bore size in mm. |
| ×75 | 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: direct front-cover thread (M5×0.8). Related PBR-family variants: PBR (double acting), PSBR (single-acting push).
Where the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR Is Used
Tensioning Jig
Pulls a belt or wire taut with 65N net force at 0.5MPa; the spring automatically releases tension when air is removed.
Vertical Hold-Down
Lifts a 3.3kg part against gravity using a 2:1 safety margin, relying on the fail-safe extended state to prevent drops.
Retract-to-Open Gate
Air retracts the rod to open a small access door; cutting pressure lets the spring push the rod out to close it securely.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR the Right Cylinder?
For this 16mm bore, the 65N net pull at 0.5MPa handles moderate tensioning tasks. If you need less force, the 12mm bore variant offers 33.1N at the same pressure. Since this is the largest standard pen-size bore, stepping up requires a different body style. The spring requires a minimum 0.2MPa to move the rod, and the fail-safe extended position is ideal when rod-out is your safe state.
The direct front-cover M5x0.8 thread mounts straight to your fixture, and the R axial inlet keeps plumbing in line. The -S suffix confirms the magnet is present for reed or electronic switches. Because the stroke is 75mm, add an external linear bearing for off-axis loads to protect the slender Ø5mm rod.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Bolt directly through the front cover (M5×0.8)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 100 mm (single-acting limit)
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 Match bolt size and engagement to the front thread.
- check Do not add an external return mechanism.
- check Keep the load coaxial; avoid side load on the thin rod.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X75SR FAQ
It delivers 65N net pull at 0.5MPa and 101.2N at 0.7MPa. Because it is spring-extended, a minimum 0.2MPa is required to overcome the spring and retract the rod. If air loss occurs, the spring pushes the rod out to a fail-safe extended position.
It mounts directly via the M5x0.8 front-cover thread, eliminating brackets. The -S suffix means it has a built-in piston magnet compatible with AirTAC reed or electronic switches. The SUS316L stainless barrel provides durability in compact spaces.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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