Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R 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
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R
The AirTAC PTBR12X15R is a JIS pen-size single-acting pull cylinder with a 12mm bore and 15mm 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 on air loss, ideal for holding parts when pressure drops. It delivers 33.1N net pull at 0.5 MPa.
The direct M5x0.8 front-cover thread allows straight mounting to your fixture without extra brackets. A fixed TPU bumper cushions the stroke ends, and the SUS316L stainless barrel resists corrosion. Plan for a safe working load of about 20N (roughly 60% of the 0.5 MPa rating) to account for seal friction and smooth travel.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R |
|---|---|
| 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 PTBR12X15R
| 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 PTBR12X15R Is Used
Fail-Safe Hold-Down
Clamps a workpiece with the rod extended, using air to retract and release. Maintains holding pressure if the air supply fails.
Retract-to-Open Gate
Spring keeps a sorting gate closed by default. Air pulls the gate open to divert parts, returning to the closed position automatically.
Light Tensioning
Applies steady pulling tension on a film or wire filament. The compact pen-size body fits tight packaging machinery clearances.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR12X15R the Right Cylinder?
This 12mm bore provides 33.1N net pull at 0.5 MPa and 51.8N at 0.7 MPa. If you need less force, the 10mm bore offers 23.5N at 0.5 MPa; for heavier pulling, the 16mm bore provides 65.0N. The spring requires a minimum 0.2 MPa pressure to function. The R suffix indicates an axial inline air inlet at the back.
Mounting uses the direct M5x0.8 front-cover thread. Ensure proper thread engagement when bolting from the top or bottom. The thin Ø5mm piston rod handles coaxial thrust well, but over the 15mm stroke or under 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 PTBR12X15R FAQ
The net usable pull force is 33.1N at 0.5 MPa and 51.8N at the 0.7 MPa maximum. Because it is single-acting pull, the spring requires a minimum 0.2 MPa air pressure before the rod moves, and the cylinder fails safe in the extended position.
It mounts directly via the M5x0.8 thread on the front cover, eliminating separate brackets. The R suffix denotes the back cover features an axial inline R air inlet for streamlined plumbing. The SUS316L stainless barrel provides corrosion resistance.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC PTBR Pen-Size Cylinders
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