Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X15SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X15SR 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, 15mm stroke; the return spring resets the rod when air is released.
- BoreØ16 mm
- Stroke15 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 PTBR16X15SR
The AirTAC PTBR16X15SR is a JIS pen-size single-acting pull cylinder with a 16 mm bore and 15 mm stroke. A spring holds the rod extended, while air entering the M5x0.8 port retracts it. If air pressure drops, the spring pushes the rod back out, providing fail-safe extension for tensioning or hold-down tasks. It yields 65 N of net pull at 0.5 MPa.
You mount this unit directly via its front-cover M5x0.8 thread, eliminating extra brackets. The SUS316L stainless barrel resists corrosion in tight jigs. A fixed TPU bumper cushions the stroke ends. Because the -S suffix denotes a built-in magnet, you can track piston position with reed or electronic switches.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X15SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X15SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 15 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 PTBR16X15SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 16 | 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: 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 PTBR16X15SR Is Used
Hold-Down Clamping
Uses spring pressure to keep a workpiece clamped safely. Air retracts the rod to release the part, ensuring the clamp stays engaged if air fails.
Retract-to-Open Gate
Spring force holds a sorting gate closed by default. Applying air pulls the gate open to divert products, saving energy during idle periods.
Web Tensioner
Maintains steady tension on a filament or web. The cylinder pulls back under air pressure and lets the spring pay out line smoothly when tension spikes.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR16X15SR the Right Cylinder?
This 16 mm bore provides 65 N net pull at 0.5 MPa and 101.2 N at the 0.7 MPa maximum. Stepping down to a 12 mm bore drops the 0.5 MPa pull to 33.1 N, while larger pen cylinders exceed this series. Plan for a safe working load of roughly 39 N, which is about 60 percent of the 0.5 MPa rating, to account for seal friction. For vertical lifts, expect to hold or pull about 3.3 kg with a 2:1 safety margin.
The direct front-cover thread simplifies fixture integration, and the fail-safe extend behavior ensures the rod returns home on air loss. The thin Ø5 mm rod handles coaxial thrust well, but add an external guide for any off-axis loads. Confirm your ordering code includes the R axial inlet and S magnet when submitting your request.
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 PTBR16X15SR FAQ
It delivers 65 N net pull at 0.5 MPa and 101.2 N at 0.7 MPa. Because it is single-acting pull, a minimum of 0.2 MPa is required to overcome the spring and move the rod. The spring automatically extends the rod if air loss occurs.
It mounts directly via the M5x0.8 front-cover thread. The SUS316L stainless barrel provides corrosion resistance. The included -S magnet allows position detection using either reed or electronic switches.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC PTBR Pen-Size Cylinders
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