Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR
The AirTAC PTBR12X30SR is a single-acting pull pen-size mini cylinder featuring a direct front-cover M5x0.8 mounting thread and a SUS316L stainless steel barrel. Air entering the M5x0.8 port retracts the rod, while a spring extends it out. It provides 33.1 N of net pull at 0.5 MPa and 51.8 N at 0.7 MPa. The spring deduction is already applied to these figures.
This fail-safe extended design ensures the rod pushes out automatically upon air loss, making it ideal for tensioning and holding tasks. The built-in magnet supports reed or electronic switches for position sensing. A fixed TPU bumper absorbs impact at the stroke ends.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR |
|---|---|
| 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 PTBR12X30SR
| 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 PTBR12X30SR Is Used
Hold-Down Clamping
Pulls a part down against a fixture during machining. The spring-extend fail-safe releases the clamp automatically if air pressure drops.
Retract-to-Open Gate
Uses the direct front-mount thread to secure a diverter gate. Air pulls the gate closed to divert flow, and the spring opens it by default.
Wire Tensioner
Maintains steady tension on a wire or filament spool.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X30SR the Right Cylinder?
This 12 mm bore generates 33.1 N net pull at 0.5 MPa. If you need less force, the 10 mm bore yields 23.5 N. For heavier pulling, the 16 mm bore provides 65.0 N. The spring requires a minimum 0.2 MPa pressure to move the rod. The direct M5x0.8 front-mount thread bolts straight to your fixture, saving space without extra brackets.
Remember the rod is only 5 mm thick, so use an external guide for off-axis loads. With the built-in magnet, order reed or electronic switches for end-position detection. Confirm the 30 mm stroke fits your fixture before checkout.
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 PTBR12X30SR FAQ
The net pull force is 33.1 N at 0.5 MPa and 51.8 N at 0.7 MPa. Because it is single-acting pull, the spring force is already deducted. A minimum 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 front-cover M5x0.8 thread, eliminating the need for separate brackets. The SUS316L stainless barrel provides corrosion resistance. The S option includes a built-in piston magnet, allowing you to use either reed or electronic switches for position detection.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC PTBR Pen-Size Cylinders
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