Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50SR
The AirTAC Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50SR 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
- 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 PTBR10X50SR
The AirTAC PTBR10X50SR is a JIS pen-size single-acting pull cylinder with a 10mm bore and 50mm 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 tensioning or hold-down tasks. It yields about 23.5N net pull at 0.5MPa.
You mount it directly via the front-cover M4x0.7 thread, saving space in tight jigs. The SUS316L stainless barrel resists corrosion. Because pulling acts on the rod-side annular area, this net force is lower than a matching push cylinder.
Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50SR Technical Specifications
| Model | Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50SR |
|---|---|
| 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 PTBR10X50SR
| 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 PTBR10X50SR Is Used
Tension Return
Pulls a belt or filament tight under air pressure and safely releases tension by springing out when the air supply drops.
Hold-Down Clamp
Retracts to clear a workspace, then uses fail-safe spring extension to hold a light workpiece in place during machining.
Gate Retract
Pneumatically pulls a diverter gate open on a compact conveyor line and springs it closed as a default resting position.
Is the Airtac PTBR Single Acting Square Head Compact Cylinder PTBR10X50SR the Right Cylinder?
This 10mm bore provides 23.5N net pull at 0.5MPa and 36.7N at 0.7MPa. If you need less force, the 8mm bore offers 12.4N at 0.5MPa. For heavier pulling, step up to the 12mm bore at 33.1N. The internal spring requires a minimum 0.2MPa to move. A built-in magnet allows position sensing with reed or electronic switches.
The direct M4x0.7 front-mount thread bolts straight to your fixture. The 50mm stroke leaves room for side play, but the 4mm rod is built for coaxial thrust. Add an external linear bearing for any off-axis loads. The fixed TPU bumper only decelerates the last few millimeters, so meter-out the exhaust if moving real tooling mass at higher speeds.
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 PTBR10X50SR FAQ
It provides 23.5N net pull at 0.5MPa and 36.7N at 0.7MPa. The internal spring requires a minimum 0.2MPa before the rod will move. On air loss, the spring holds the rod fail-safe extended.
It mounts directly via the front-cover M4x0.7 thread. The S option adds a built-in piston magnet compatible with reed or electronic switches. The SUS316L stainless barrel suits clean and mildly corrosive environments.
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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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