Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R is a single acting, pull type (spring extend) pen-size mini cylinder with direct front-cover mounting (M4×0.7 thread). A single air port drives the pull stroke on a Ø10mm bore, 50mm stroke; the return spring resets the rod when air is released.
- BoreØ10 mm
- Stroke50 mm
- Port sizeM5×0.8
- Front-mount threadM4×0.7
- Acting typePull, single acting
- ReturnSpring
About the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R
The AirTAC PTBR10X50R is a JIS pen-size single-acting pull cylinder. 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 23.5 N net pull at 0.5 MPa and 36.7 N at 0.7 MPa. The SUS316L stainless barrel houses a slim body for tight jigs.
You mount this cylinder directly via its front-cover M4x0.7 thread, eliminating extra brackets. A fixed TPU bumper cushions the stroke ends. For smooth travel, plan a safe working load of about 14 N (roughly 60% of the 0.5 MPa rating). At 50 mm stroke, the Ø4 mm piston rod needs an external guide if facing any off-axis loads.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R |
|---|---|
| Series | PTBR JIS pen-size front-mount cylinder |
| Bore size | Ø10 mm |
| Rod diameter | Ø4 mm |
| Stroke | 50 mm |
| Acting type | Single acting, pull type (spring extend) |
| Front-mount thread | M4×0.7 |
| 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 60 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 (M4×0.7); barrel is SUS316L. Forces below are NET spring-deducted values. Confirm against the product label.
Net Pull Force (Ø10mm)
| Pressure | Net pull force |
|---|---|
| 0.5 MPa | 23.5 N |
| 0.7 MPa (max) | 36.7 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 PTBR10X50R
| PTBR | JIS pen-size front-mount single acting, pull type (spring extend) series. |
|---|---|
| 10 | Bore size in mm. |
| ×50 | 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 (M4×0.7). Related PBR-family variants: PBR (double acting), PSBR (single-acting push).
Where the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R Is Used
Hold-Down Clamp
Pulls a clamp arm back to secure light components during machining, relying on the spring to safely release the hold if compressed air drops.
Retract-to-Open Gate
Tugs a small diverter gate shut on a packaging line, using the 23.5 N pull at 0.5 MPa to overcome belt vibration and spring back open on signal loss.
Light Tensioner
Maintains steady tension on a thin film or wire web, pulling with a safe working load near 14 N while mounted directly via the front M4 thread.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50R the Right Cylinder?
Selecting this 10 mm bore yields 23.5 N usable pull at 0.5 MPa. If your fixture needs less force, the Ø8 bore offers 12.4 N; if pulling heavier parts, stepping up to the Ø12 bore provides 33.1 N. Remember the spring sets a 0.2 MPa minimum pressure before motion begins.
This model uses the R axial back cover for in-line plumbing and bolts directly through the M4x0.7 front thread. It lacks a sensor magnet. Need powered extension instead? Choose the PSBR push series, or select the PBR double-acting variant for force both ways.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Bolt directly through the front cover (M4×0.7)
- ✓ Only one air line / solenoid needed
- ✓ Fail-safe extend on air loss
- ✓ Magnet (S) for sensors?
- ✓ Stroke ≤ 60 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 PTBR10X50R FAQ
It delivers 23.5 N net pull at 0.5 MPa and 36.7 N at 0.7 MPa. Because it is spring-extended, a 0.2 MPa minimum pressure is required to overcome the spring and retract the rod. The spring automatically pushes the rod out on air loss.
It mounts directly via the front-cover M4x0.7 thread. The body features a SUS316L stainless barrel and an R axial air inlet. It has no sensor magnet and relies on a fixed TPU bumper for end-of-stroke deceleration.
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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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