Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X75R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X75R 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, 75mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke75 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 PTBR12X75R
The AirTAC PTBR12X75R is a single-acting pull pen cylinder with a 12mm bore and 75mm stroke. Air entering the M5x0.8 port retracts the rod, while an internal spring pushes it back out, ensuring fail-safe extension on air loss. It provides 33.1N net pull at 0.5MPa and 51.8N at 0.7MPa, with the spring force already deducted.
You mount it directly via the front-cover M5x0.8 thread, and the R axial inlet keeps plumbing in line. The SUS316L stainless barrel resists corrosion in tight jigs.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X75R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X75R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 75 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 PTBR12X75R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 12 | Bore size in mm. |
| ×75 | 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 PTBR12X75R Is Used
Hold-Down Clamp
Pulls a clamp down to secure a part during machining, with the spring automatically releasing the clamp upward if air pressure drops.
Retract-to-Open Gate
Uses the 75mm stroke to pull a diverter gate open, letting the internal spring push it closed as a fail-safe when the air supply stops.
Wire Tensioner
Maintains steady pulling tension on a filament or wire feed, safely extending to relieve tension whenever the pneumatic signal is removed.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X75R the Right Cylinder?
This 12mm bore yields 33.1N net pull at 0.5MPa. If you need less force, the 10mm bore offers 23.5N; if you need more, the 16mm bore provides 65.0N. At 75mm, this model hits the maximum single-acting stroke limit for this bore.
The direct M5x0.8 front-mount thread bolts straight to your fixture. Because the rod is only 5mm thick, add an external guide for off-axis loads over this long stroke. A minimum pressure of 0.2MPa is required before motion begins.
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 PTBR12X75R FAQ
The net pull force is 33.1N at 0.5MPa and 51.8N at 0.7MPa (maximum pressure). Because it is a spring-extend cylinder, a minimum of 0.2MPa is required to overcome the spring and retract the rod. The rod fails safe to the extended position on air loss.
It mounts directly via the front-cover M5x0.8 thread. The back cover features an R axial air inlet for in-line plumbing. The body uses a SUS316L stainless barrel, and this specific model does not include a sensor magnet.
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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