Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X10R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X10R 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, 10mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke10 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 PTBR12X10R
The AirTAC PTBR12X10R is a JIS pen-size single-acting pull cylinder with a 12mm bore and 10mm stroke. It delivers 33.1 N of net pull at 0.5 MPa and 51.8 N at 0.7 MPa. A spring holds the rod extended, while supplying air to 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.
You mount this actuator directly via its front-cover M5x0.8 thread, eliminating separate brackets to save space on end-of-arm tooling. The SUS316L stainless barrel resists corrosion, and a fixed TPU bumper cushions the stroke ends. Because pulling acts on the smaller rod-side area, this net force is lower than a matching push cylinder.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X10R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X10R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 10 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 PTBR12X10R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 12 | Bore size in mm. |
| ×10 | 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 PTBR12X10R Is Used
Fail-Safe Hold-Down Clamp
Clamps a part with the rod extended by spring force. Air retracts the pin to release the component, ensuring the grip holds securely during any air pressure loss.
Retract-to-Open Gate
Uses the front M5x0.8 thread to mount directly on a conveyor diverter. Air pulls the gate closed, and the spring pushes it open to a safe home position on signal loss.
Web Tensioner
Maintains steady tension on a lightweight material line. The spring keeps the dancer arm extended, and air retracts it to slacken the web when needed.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X10R the Right Cylinder?
For a 12mm bore, this model yields 33.1 N of usable pull at 0.5 MPa. Stepping down to a 10mm bore gives 23.5 N, while stepping up to a 16mm bore provides 65.0 N. Plan for a safe working load of about 20 N (roughly 60 percent of the 0.5 MPa figure) to account for seal friction. This equates to holding or lifting about 1.7 kg with a 2:1 safety margin.
The direct M5x0.8 front-mount thread secures straight to your fixture. The R axial inlet keeps plumbing in line. Remember the 5mm rod is for coaxial thrust only; add an external guide for off-axis loads. The fixed TPU bumper only decelerates the last few millimeters, so meter-out the exhaust if moving real tooling mass at higher speeds.
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 PTBR12X10R FAQ
The net pull force is 33.1 N at 0.5 MPa and 51.8 N at 0.7 MPa. Because it is spring-extended, 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 back out.
It mounts directly via the M5x0.8 thread on the front cover, which matches the M5x0.8 air port size. The back cover uses an R axial inlet for in-line plumbing. The SUS316L stainless barrel provides corrosion resistance for tight jigs.
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Related AirTAC PTBR Pen-Size Cylinders
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