Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30R 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, 30mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke30 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 PTBR12X30R
The AirTAC PTBR12X30R is a single-acting pull-type pen cylinder featuring a 12mm bore and 30mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out. This provides a fail-safe extended state upon air loss, making it reliable for tensioning and return-to-home tasks. It yields 33.1N of net pull at 0.5 MPa.
You mount this unit directly via its front-cover M5x0.8 thread, eliminating extra brackets to save space on small jigs. The SUS316L stainless barrel resists corrosion in tight spots. A fixed TPU bumper cushions the end of travel. Because pull acts on the rod-side annular area, this model generates lower force than a matching push cylinder. Plan for a safe working load of about 20N, which accounts for seal friction and smooth travel.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 30 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 PTBR12X30R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 12 | Bore size in mm. |
| ×30 | 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 PTBR12X30R 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 pressure drops.
Retract-To-Open Gate
Spring force holds a sorting gate closed by default. A brief air pulse pulls the gate open to divert products, saving energy on short cycling tasks.
Wire Tensioner
Maintains steady pulling tension on a filament or wire spool. The fail-safe extended position keeps the material taut during pneumatic supply interruptions.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30R the Right Cylinder?
This 12mm bore provides 33.1N net pull at 0.5 MPa and 51.8N at the 0.7 MPa maximum. If your task needs less force, the 10mm bore offers 23.5N at 0.5 MPa. For heavier pulling, step up to the 16mm bore delivering 65.0N at 0.5 MPa. The spring requires a minimum 0.2 MPa pressure before motion begins.
The direct front-cover M5x0.8 thread secures straight to your fixture. The R axial inlet keeps plumbing in line. Remember the 5mm rod is for coaxial thrust only; over long strokes or off-axis loads add an external guide. This specific configuration ships without a sensor magnet.
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 PTBR12X30R FAQ
The net usable pull force is 33.1N at 0.5 MPa and 51.8N at the 0.7 MPa maximum. A minimum of 0.2 MPa is required to overcome the spring and retract the rod. Upon air loss, the spring pushes the rod back out to a fail-safe extended state.
It mounts directly via the front-cover M5x0.8 thread. Air is supplied through the back cover R axial inlet, which uses an M5x0.8 port. The SUS316L stainless barrel provides durability in compact spaces.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PTBR Pen-Size Cylinders
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