Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15SR 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, 15mm stroke; the return spring resets the rod when air is released.
- BoreØ12 mm
- Stroke15 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 PTBR12X15SR
The AirTAC PTBR12X15SR is a JIS pen-size single-acting pull cylinder that bolts directly via its front-cover M5x0.8 thread. 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 yields 33.1 N net pull at 0.5 MPa and 51.8 N at 0.7 MPa.
Because pull acts on the rod-side annular area, this force is lower than a matching push cylinder. The SUS316L stainless barrel and slim body fit tight jigs. A fixed TPU bumper cushions the end strokes, and the -S suffix provides a built-in magnet for reed or electronic switches.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15SR |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø12 mm |
| Rod diameter | Ø5 mm |
| Stroke | 15 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 PTBR12X15SR
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 12 | Bore size in mm. |
| ×15 | 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 PTBR12X15SR Is Used
Hold-Down Clamping
Pulls a part against a fixture during machining. The spring-extend design automatically releases the clamp safely if the air supply is interrupted.
Retract-to-Open Gate
Uses the direct front-cover thread to mount on a compact diverter. Air retracts the gate to let products pass, and the spring closes it by default.
Web Tensioner
Maintains steady tension on a lightweight material line. The built-in magnet works with electronic switches to confirm the rod position during cycles.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15SR the Right Cylinder?
This 12 mm bore provides 33.1 N net pull at 0.5 MPa. If you need less force, the 10 mm bore offers 23.5 N; for heavier pulling, the 16 mm bore provides 65.0 N.
The direct front-cover mount eliminates brackets, and the spring ensures the rod stays extended if air drops. Confirm your M5x0.8 bolt engagement for secure mounting. The Ø5 mm rod handles coaxial thrust well, but over long strokes or off-axis loads, add an external linear bearing to prevent side-load damage.
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 PTBR12X15SR FAQ
The net usable pull force is 33.1 N at 0.5 MPa and 51.8 N at the 0.7 MPa maximum. Because it is spring-extended, a minimum 0.2 MPa pressure is required to overcome the spring and retract the rod.
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 for position sensing.
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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