Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X60SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X60SR 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 Ø12mm bore, 60mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke60 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 PTBR12X60SR
The AirTAC PTBR12X60SR is a JIS pen-size single-acting pull cylinder with a 60mm stroke and built-in magnet. Air entering the M5x0.8 port retracts the rod, while venting allows the spring to push it back out, providing fail-safe extension on air loss. It delivers 33.1N net pull at 0.5 MPa and 51.8N at 0.7 MPa, with the spring force already deducted.
You mount it directly via the front-cover M5x0.8 thread, eliminating extra brackets for compact jigs. The SUS316L stainless barrel resists corrosion, and a fixed TPU bumper cushions the stroke ends. Because pulling acts on the rod-side area, this usable force is lower than a matching push-type cylinder.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X60SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X60SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 60 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 75 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 (Ø12mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 33.1 N |
| 0.7 MPa (max) | 51.8 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 PTBR12X60SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 12 | Bore size in mm. |
| ×60 | 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 PTBR12X60SR Is Used
Tensioning Jig
Applies a steady pull on light materials, using the 33.1N net force to maintain tension and safely extending if air pressure drops.
Hold-Down Clamp
Retracts to clear a part for loading, then springs back out to hold it in place, saving space with direct front-cover mounting.
Retract-to-Open Gate
Pulls a lightweight diverter gate closed during operation and springs it open to safely stop flow on air loss.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X60SR the Right Cylinder?
This 12mm bore provides 33.1N net pull at 0.5 MPa. Stepping down to a 10mm bore yields 23.5N, while moving up to a 16mm bore offers 65.0N, letting you tune the holding force precisely. Plan for a safe working load of about 20N (roughly 60% of the 0.5 MPa rating) to account for seal friction.
The fail-safe extended design keeps the rod out during air loss, ideal for tensioning tasks. The 60mm stroke sits comfortably under the 75mm limit for this bore. Remember the thin Ø5mm rod is for coaxial thrust, so add an external guide for off-axis loads. Confirm the M5x0.8 front-mount thread and R axial inlet fit your fixture.
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 ≤ 75 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 PTBR12X60SR FAQ
It provides 33.1N net pull at 0.5 MPa and 51.8N at 0.7 MPa. Because it is single-acting pull, a minimum pressure of 0.2 MPa is required to overcome the spring and retract the rod. If air is lost, the spring pushes the rod out to a fail-safe extended position.
It mounts directly via the front-cover M5x0.8 thread. The -S suffix indicates a built-in piston magnet, making it compatible with AirTAC reed or electronic solid-state switches. The SUS316L stainless barrel provides corrosion resistance.
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